Product Description
A Series Short Pitch Precision Multiple Strand Roller Chains & Bush Chains
|
ANSI |
Chain No. |
Pitch
P |
Roller diameter
d1max |
Width between inner plates b1min mm |
Pin diameter
d2max |
Pin length | Inner plate depth h2max mm |
Plate thickness
Tmax |
Transverse pitch Pt mm |
Tensile strength
Qmin |
Average tensile strength
Q0 |
Weight per meter q kg/m |
|
| Lmax mm |
Lcmax mm |
||||||||||||
| 80-6 | 16A-6 | 25.400 | 15.88 | 15.75 | 7.92 | 179.2 | 183.0 | 24.00 | 3.25 | 29.29 | 340.2/76530 | 374.22 | 15.50 |
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CHINAMFG which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CHINAMFG paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CHINAMFG the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CHINAMFG flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CHINAMFG Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CHINAMFG range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
/* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Standard |
|---|---|
| Application: | Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Food and Beverage Industry, Motorcycle Parts |
| Surface Treatment: | Polishing |
| Structure: | Roller Chain |
| Material: | Alloy |
| Type: | Short Pitch Chain |
| Samples: |
US$ 0/Meter
1 Meter(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Can a bush chain be used in food processing industries?
Yes, bush chains can be used in food processing industries, provided that they meet certain criteria to ensure food safety and hygiene. When selecting a bush chain for food processing applications, several factors should be considered:
1. Material compatibility: The chain material should be food-grade and suitable for contact with food products. Stainless steel, particularly austenitic stainless steel grades like 304 and 316, is commonly used due to its corrosion resistance, durability, and ease of cleaning. These materials are non-toxic and do not contaminate the food.
2. Lubrication: In food processing applications, it is important to consider the lubrication requirements. Some bush chains are available with self-lubricating properties or require food-grade lubricants that are safe for incidental contact with food. This ensures that the lubrication used does not pose a risk of contamination.
3. Cleanability: The bush chain should be designed in a way that allows for easy cleaning and maintenance. Smooth surfaces, without crevices or hard-to-reach areas, are preferred to prevent the accumulation of food particles, bacteria, or other contaminants. The chain should also withstand frequent cleaning processes, including washdowns with cleaning solutions or high-pressure water.
4. FDA and regulatory compliance: It is important to ensure that the bush chain and associated components comply with relevant food safety regulations, such as those set by the FDA (Food and Drug Administration) in the United States or similar regulatory bodies in other countries. Compliance with these regulations helps to maintain food safety standards.
5. Sanitary design: The bush chain should adhere to sanitary design principles, which include features such as smooth surfaces, no exposed threads, and easy disassembly for cleaning. This helps prevent the growth of bacteria and ensures the chain can be effectively sanitized.
By considering these factors and selecting a bush chain that meets the specific requirements of the food processing industry, it is possible to use bush chains safely and effectively in various applications, including conveying, sorting, packaging, and processing of food products.
What are the benefits of using a self-lubricating bush chain?
Using a self-lubricating bush chain offers several advantages in industrial applications:
1. Reduced maintenance: Self-lubricating bush chains are designed to minimize the need for manual lubrication. They incorporate special materials or coatings that provide built-in lubrication, reducing the frequency of lubrication maintenance tasks.
2. Increased operational efficiency: The self-lubricating feature ensures consistent and proper lubrication of the bush chain, which helps to reduce friction and wear. This results in improved efficiency and smoother operation of the chain, reducing energy consumption and increasing overall system performance.
3. Extended chain life: Proper lubrication is essential for preserving the integrity and longevity of a bush chain. Self-lubricating bush chains offer superior lubrication capabilities, reducing friction and wear on the chain components. This leads to longer chain life, reducing the frequency of chain replacement and associated downtime.
4. Contamination resistance: Self-lubricating bush chains often have enhanced resistance to contaminants such as dust, dirt, and moisture. The lubrication materials or coatings used in these chains help repel or resist the entry of contaminants, reducing the risk of chain malfunction or premature failure.
5. Cost savings: By eliminating or reducing the need for manual lubrication, self-lubricating bush chains can result in cost savings associated with labor, lubrication materials, and maintenance downtime. The extended chain life also contributes to cost savings by reducing the frequency of chain replacements.
6. Environmental friendliness: Self-lubricating bush chains often use lubrication materials that are environmentally friendly, such as dry film lubricants or solid lubricants. This reduces the potential for lubricant leakage or contamination of the surrounding environment.
Overall, the use of self-lubricating bush chains provides significant benefits in terms of reduced maintenance, improved efficiency, extended chain life, contamination resistance, cost savings, and environmental considerations. These advantages make self-lubricating bush chains a preferred choice in many industrial applications where reliable and low-maintenance chain operation is essential.
What industries commonly use bush chains?
Bush chains are widely used in various industries that require reliable and efficient power transmission systems. Here are some industries that commonly utilize bush chains:
1. Manufacturing and Machinery: Bush chains find extensive use in manufacturing and machinery applications. They are employed in conveyors, assembly lines, packaging equipment, machine tools, and other machinery where reliable and smooth power transmission is essential.
2. Automotive: The automotive industry relies on bush chains for various applications, including engine timing systems, camshaft drives, timing belts, and other critical automotive components. Bush chains offer the durability and strength required for high-speed and high-torque applications.
3. Agriculture: Bush chains play a crucial role in agricultural machinery such as tractors, combines, harvesters, and irrigation systems. They are used for transmitting power in these rugged and demanding environments, providing reliable operation even under heavy loads.
4. Material Handling: The material handling industry heavily utilizes bush chains in conveyor systems, elevators, escalators, and other equipment involved in the movement of goods. Bush chains offer the strength and durability required for handling heavy loads and continuous operation.
5. Mining and Quarrying: In mining and quarrying operations, bush chains are employed in various equipment, including crushers, screens, conveyors, and bucket elevators. They withstand the harsh conditions and heavy loads encountered in these industries.
6. Energy and Power Generation: Bush chains are used in power plants, renewable energy systems, and other energy-related applications. They are utilized in equipment such as turbines, generators, pumps, and conveyors to transmit power efficiently and reliably.
7. Construction and Heavy Equipment: The construction industry relies on bush chains in equipment like cranes, excavators, loaders, and bulldozers. These chains provide the necessary power transmission for the movement of heavy loads and the operation of various construction machinery.
These are just a few examples of the industries that commonly use bush chains. However, bush chains have a broad range of applications and can be found in many other industries where reliable power transmission is required.
editor by CX 2023-12-29
China supplier Tsubaki Chain 24A-2 a Series Short Pitch Precision Duplex Roller Chains and Bush Chains with Link
Product Description
A Series Short Pitch Precision Duplex Roller Chains & Bush Chains
| ISO/ANSI/ DIN Chain No. |
Chain No. | Pitch
P |
Roller diameter
d1max |
Width between inner plates b1min mm |
Pin diameter
d2max |
Pin length | Inner plate depth h2max mm |
Plate thickness
Tmax |
Transverse Pt mm |
Tensile strength
Qmin |
Average tensile strength Q0 kN |
Weight per meter q kg/m |
|
| Lmax mm |
Lcmax mm |
||||||||||||
| 120-2 | 24A-2 | 38.100 | 22.23 | 25.22 | 11.10 | 95.8 | 99.7 | 35.70 | 4.80 | 45.44 | 254.00/57727 | 326.2 | 11.70 |
*Bush chain: d1 in the table indicates the external diameter of the bush
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CHINAMFG which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CHINAMFG paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CHINAMFG the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CHINAMFG flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
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We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CHINAMFG range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
| Standard or Nonstandard: | Standard |
|---|---|
| Application: | Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Food and Beverage Industry, Motorcycle Parts |
| Surface Treatment: | Polishing |
| Samples: |
US$ 0/Meter
1 Meter(Min.Order) | Order Sample |
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Available
| Customized Request |
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| Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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Initial Payment Full Payment |
| Currency: | US$ |
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How does a bush chain handle reverse rotations and backdrives?
A bush chain is designed to handle reverse rotations and backdrives effectively. Here’s how it works:
1. Non-Slip Design: Bush chains are typically constructed with interlocking link plates and precision-fitted bushings. This design ensures that the chain maintains a positive engagement with the sprockets, preventing slippage or disengagement during reverse rotations or backdrives.
2. Tooth Profile: The sprockets used with bush chains are designed with a specific tooth profile that helps in maintaining proper chain engagement even during reverse rotations. The tooth shape ensures a smooth transition of the chain from one tooth to another, minimizing the risk of skipping or jumping off the sprocket.
3. Backstop Mechanisms: In some applications where backdrives or reverse rotations are more common, additional backstop mechanisms may be employed. These mechanisms prevent the chain from moving in the undesired direction by utilizing devices such as one-way clutches or backstop sprockets.
4. Proper Chain Tension: Maintaining proper chain tension is crucial for reliable operation in reverse rotations and backdrives. Adequate tension ensures that the chain remains engaged with the sprockets and minimizes the possibility of slippage.
Overall, bush chains are designed to handle reverse rotations and backdrives without compromising their performance and reliability. However, it is important to consider the specific application requirements and consult with chain manufacturers or experts to ensure the selection of the appropriate bush chain design and components for the desired operating conditions.
What are the common signs of wear and tear in a bush chain?
As a bush chain is subjected to regular use and stress, it can exhibit signs of wear and tear over time. Here are some common indicators to look out for:
1. Chain Elongation: One of the most apparent signs of wear in a bush chain is elongation. This occurs when the chain’s pitch increases due to the stretching of the bushings, resulting in a loose and elongated chain. Elongation can lead to improper engagement with the sprockets and affect the overall performance of the chain.
2. Pin and Bushing Wear: The pins and bushings of a bush chain experience friction and wear during operation. Excessive wear can be observed as grooves or significant flattening of the pin surfaces or bushing bores. This wear can lead to increased clearances, reduced chain strength, and compromised performance.
3. Plate Wear: The inner and outer plates of a bush chain can also exhibit signs of wear. This can include visible signs of erosion, thinning of the plates, or rough surfaces. Plate wear can affect the chain’s overall strength and increase the risk of failure.
4. Sprocket Wear: Wear on the teeth of the sprockets is another indication of chain wear. Excessive wear can result in irregular tooth profiles, tooth tip thinning, or significant tooth wear. Sprocket wear can lead to poor chain engagement, increased noise, and reduced efficiency.
5. Misalignment: Misalignment of the chain can cause uneven wear on the pins, bushings, and plates. Signs of misalignment include uneven wear patterns, abnormal noise during operation, and premature failure of the chain components.
6. Increased Noise and Vibration: Excessive wear in a bush chain can result in increased noise and vibration during operation. Unusual rattling, clanking, or grinding sounds may indicate worn-out components or poor chain engagement.
Regular inspection of the chain and being attentive to these signs of wear and tear is crucial. When any of these signs are noticed, it is recommended to take appropriate measures such as replacing the chain or repairing the worn components to ensure the safe and efficient operation of the equipment.
What are the main components of a bush chain?
A bush chain consists of several key components that work together to enable efficient power transmission. The main components of a bush chain include:
1. Bushings: Bushings are cylindrical components with a hollow bore that fit into the chain links. They provide a low-friction interface between the chain pins and the link plates, allowing smooth rotation and reducing wear.
2. Pins: Pins are cylindrical metal rods that connect the inner plates and outer plates of the chain links. They pass through the bushings and provide the rotational movement of the chain. The pins are hardened and precisely machined to withstand the loads and provide durability.
3. Link Plates: Link plates are flat metal plates that are connected by the pins. They form the main structure of the chain and transmit the tensile forces. The link plates are typically made of high-strength steel and are designed to withstand the applied loads.
4. Rollers: Some bush chains feature rollers that are located between the link plates and the bushings. These rollers allow smoother engagement with sprockets or other mating components, reducing friction and enhancing the chain’s performance. Rollers also help to maintain proper chain tension.
5. Retaining Clips or Rivets: Retaining clips or rivets are used to secure the pins in place and prevent them from rotating within the link plates. They ensure the integrity of the chain assembly and maintain the proper alignment of the components.
6. Lubrication: Lubrication is crucial for the proper functioning and longevity of a bush chain. It helps to reduce friction, minimize wear, and prevent corrosion. Lubrication can be applied through various methods, such as oil bath, oil drip, or periodic lubrication.
These components work together to provide reliable power transmission in bush chain systems. The precise design and construction of each component contribute to the overall strength, durability, and efficiency of the chain.
editor by CX 2023-10-24
China Professional DIN Power Transmission Industry Carbon Steel Stainless Steel Heavy Duty a B Series Conveyor Chain for Industrial Applications Roller Chain 08b\10b\12b\16b
Product Description
Product Description
Vision Group is 1 of the largest manufacturers of Driving Chain, Conveyor Chain, Motorcycle Chain, Hoisting Chain, Agriculture Chain, Stainless Steel Chain, Dropped Forged Rivetless Chain, Long Pitch Conveyor Chain and so on.
GB/T, DIN, ANSI, ISO, BS, JIS.
ISO9001: 2000 and ISO1400: 2004.
Product Attribute
| Product name | Transmission Standard Roller Chain |
|
Surface Treatment |
Shot Peening ,Tempering Oiling ,Nickel-plated Grease, zince plated, Heat Treatment ,Stain proofing Carburizing ,Pre-stretched and anti-fatigue ,Quenching |
| Product application | Industry machine,Agriculture, mining, metallurgy, petrochemical industry, lifting and transportation and other industries |
| Product Series |
Series A, Series B, Heavy Duty |
| material |
Stainless steel and carbon steel |
| structure |
Simplex/Duplex/Triplex |
| Port |
Any sea port or airport in China |
| Brand | TV OEM |
| Payment |
L/C, T/T, D/P, Western Union |
| Package |
Chain, Plastic Bag, Color Box, Wooden Case. or OEM |
| A Series | 03C,04C-1,06C-1,085-1,08A-1,10A-1,12A-1,16A-1,20A-1,24A-1,28A-1,32A-1,36A-1,40A-1,48A-1.
15,25,35,41,40,50,60,80,100,120,140,160,180,200,240 |
| 04C-2,06C-2,085-2,08A-2,10A-2,12A-2,16A-2,20A-2,24A-2,28A-2,32A-2,36A-2,40A-2,48A-2.
25-2,35-2,41-2,40-2,50-2,60-2,80-2,100-2,120-2,140-2,160-2,180-2,200-2,240-2. |
|
| 04C-3,06C-3,085-3,08A-3,10A-3,12A-3,16A-3,20A-3,24A-3,28A-3,32A-3,36A-3,40A-3,48A-3.
25-3,35-3,41-3,40-3,50-3,60-3,80-3,100-3,120-3,140-3,160-3,180-3,200-3,240-3. |
|
| B Series | 05B-1,06B-1,08B-1,10B-1,12B-1,16B-1,20B-1,24B-1,28B-1,32B-1,40B-1,48B-1,56B-1,64B-1,72B-1. |
| 05B-2,06B-2,08B-2,10B-2,12B-2,16B-2,20B-2,24B-2,28B-2,32B-2,40B-2,48B-2,56B-2,64B-2,72B-2. |
|
| 05B-3,06B-3,08B-3,10B-3,12B-3,16B-3,20B-3,24B-3,28B-3,32B-3,40B-3,48B-3,56B-3,64B-3,72B-3. |
|
| Heavy Duty | 08AH-1,10AH-1,12AH-1,16AH-1,20AH-1,24AH-1,28AH-1,32AH-1,36AH-1,40AH-1,48AH-1
35H,40H,50H,60H,80H,100H,120H,140H,160H,180H,200H,240H |
| 12AH-2,16AH-2,20AH-2,24AH-2,28AH-2,32AH-2,40AH-2,
35H-2,40H-2,50H-2,60H-2,80H-2,100H-2,120H-2,140H-2,160H-2,180H-2,200H-2,240H-2. |
|
| 12AH-3,16AH-3,20AH-3,24AH-3,28AH-3,32AH-3,40AH-3
35H-3,40H-3,50H-3,60H-3,80H-3,100H-3,120H-3,140H-3,160H-3,180H-3,200H-3,240H-3. |
|
| Double pitch Series |
208A,208B,210A,210B,212A,212B,216A,216AH,216B,220A,220B,224A,224B,228B,232B
2040,2050,2060,2080,2080H,2100,2120 |
| We also carry out OEM according to your requirements | |
Product Parameters
Our Advantages
Company advantages:
Own Import & Export License, The TV trade mark registered successfully in many countries, Sales network spread all over China, Products export to 65 countries in 5 continents.
Membership:
1. The member of China General Machine Components Industry Association.
2. The member of China Chain Transmission Association.
3. The member of China Chain Standardization Association.
4. The member of China Agricultural Association Machinery Manufacturers.
With our excellent trained staffs and workers, advanced and efficient equipments, completely sales network, strict QA systems. You are confidence that our premium qualified chain can meet all customers’ specification and strictest quality standards.
WHY CHOOSE US
Comprehensive Product Portfolio We produce and supply a wide range of power transmission
products including drive chains, leaf chains, conveyor chains, agricultural chains, sprockets, and
couplings. This one-store-for-all shopping experience will significantly reduce your searching costs while
guarantee youfind what you want at 1 click.
Value Choice Products Our products are the best combination of quality and price, and you get what
you want within your budgets
Seasoned Sales Associates and Engineers We have 15 seasoned sales associates and 5 engineers;
on our team at your disposal any time when you need a helping hand. They are well trained with industry
know-now and will always respond to your requests within 24 hours.
100% Customer Retention Rate Our regular customers from overseas come back not just for our
premium quality products, but for the superior services that we’ve provided over the years.
FAQ
Q1: What’s your average lead time?
A: It varies. Our regular end-to-end lead time is 1-2 months.. We also provide express shipments for rush orders. For details,please consult our sales associate.
Q2: Is your price better than your competitors given the same quality?
A: Definitely YES. We provide the most competitive price in the power transmission industry. If price disparity exists, we’ll be more than happy to do a price match.
Q3: Can you make chains according to my CAD drawings?
A: Yes. Besides the regular standard chains, we produce non-standard and custom-design products to meet the specific technical requirements. In reality, a sizable portion of our production capacity is assigned to make non-standard products.
Q4: Can we inspect the goods before shipment?
A: Yes. You or your representative or any third-party inspection party assigned is allowed access to our facility and do the inspection.
Q5: What kind of payment method is acceptable for your mill?
A: We’re flexible. We take T/T, L/C, or any other online payment methods so long as it’s applicable for you.
Q6: What if I have any other questions?
A: Whenever in doubt, you’re always encouraged to consult our sales associate any time – They will help you to your satisfaction.
|
Shipping Cost:
Estimated freight per unit. |
To be negotiated |
|---|
| Usage: | Transmission Chain |
|---|---|
| Material: | Alloy/Carbon Steel |
| Surface Treatment: | Polishing |
| Customization: |
Available
| Customized Request |
|---|
How do steel chains handle misalignment between sprockets in conveyor systems?
Steel chains are designed to handle some degree of misalignment between sprockets in conveyor systems. The flexibility and articulation of the chain links allow them to accommodate minor misalignments without causing significant issues in the operation of the conveyor.
When a misalignment occurs between sprockets, the chain links can pivot and adjust their position to a certain extent, ensuring smooth engagement with the sprocket teeth. The ability to tolerate misalignment is especially important in conveyor systems where slight variations in alignment may occur due to factors such as uneven loading, wear on sprocket teeth, or settling of the conveyor structure.
However, it’s essential to note that excessive misalignment can lead to accelerated wear and stress on the chain, sprockets, and other conveyor components. Severe misalignment should be avoided, and regular maintenance and alignment checks should be conducted to ensure the conveyor operates efficiently and to prolong the service life of the chain and sprockets.
Proper lubrication of the steel chain is also crucial in reducing friction and wear, especially in misaligned conveyor systems. Adequate lubrication helps to minimize the impact of misalignment and maintain the smooth movement of the chain along the sprockets.
In summary, steel chains are designed to handle minor misalignments between sprockets in conveyor systems, but excessive misalignment should be avoided through regular maintenance and alignment checks to ensure the longevity and optimal performance of the conveyor system.
editor by CX 2023-09-13
China manufacturer Stainless Steel Roller Chain 40-4 a Series Short Pitch Precision Multiple Strand Transmission Roller Chains and Bush Chains
Product Description
A Series Short Pitch Precision Multiple Strand Roller Chains & Bush Chains
|
ANSI |
Chain No. |
Pitch
P |
Roller diameter
d1max |
Width between inner plates b1min mm |
Pin diameter
d2max |
Pin length | Inner plate depth h2max mm |
Plate thickness
Tmax |
Transverse pitch Pt mm |
Tensile strength
Qmin |
Average tensile strength
Q0 |
Weight per meter q kg/m |
|
| Lmax mm |
Lcmax mm |
||||||||||||
| 40-4 | 08A-4 | 12.700 | 7.95 | 7.85 | 3.96 | 59.8 | 61.0 | 12.00 | 1.50 | 14.38 | 56.4/12687 | 62.04 | 2.57 |
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
| Standard or Nonstandard: | Standard |
|---|---|
| Application: | Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car |
| Surface Treatment: | Polishing |
| Structure: | Roller Chain |
| Material: | Alloy |
| Type: | Bush Chain |
| Samples: |
US$ 0/Meter
1 Meter(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Can a bush chain be used in cleanroom environments?
Yes, bush chains can be used in cleanroom environments depending on the specific requirements and design of the cleanroom. Here are some considerations:
1. Material Selection: The choice of material for the bush chain is crucial in cleanroom applications. Stainless steel or plastic chains are commonly used because they offer excellent corrosion resistance and are easy to clean. These materials also have low particle generation, which is important in maintaining cleanroom standards.
2. Lubrication: In cleanroom environments, lubrication may need to be minimized or eliminated to prevent contamination. Self-lubricating bush chains or dry lubricants can be used to reduce the need for external lubrication, minimizing the risk of particle generation.
3. Design and Construction: The design of the bush chain should minimize the potential for particle accumulation. Smooth surfaces and sealed construction can help prevent the buildup of contaminants. Additionally, the chain should be designed for easy disassembly and cleaning to facilitate regular maintenance.
4. Cleanroom Compatibility: It is essential to verify that the bush chain and any associated components, such as sprockets, meet the cleanroom requirements and standards. They should be made of materials that are compatible with the cleanroom environment and meet any necessary certifications or regulations.
When using a bush chain in a cleanroom environment, proper installation, regular cleaning, and maintenance are essential to ensure optimal performance and prevent any potential contamination. Consulting with experts or suppliers familiar with cleanroom requirements can help in selecting the appropriate bush chain and ensuring compliance with cleanroom standards.
Can a bush chain be used in corrosive or harsh environments?
Yes, a bush chain can be used in corrosive or harsh environments, but it requires careful selection and proper maintenance to ensure optimal performance and longevity. Here are some considerations:
1. Material Selection: When operating in corrosive environments, it is crucial to select a bush chain made from corrosion-resistant materials such as stainless steel or specialty alloys. These materials offer enhanced resistance to corrosion and chemical attack.
2. Coatings and Surface Treatments: Applying coatings or surface treatments to the bush chain can provide additional protection against corrosion. For example, coatings like zinc plating, nickel plating, or chemical treatments can help inhibit rust and corrosion.
3. Sealing and Protection: In harsh environments, it is essential to protect the bush chain from contaminants and corrosive substances. Enclosing the chain in a protective housing or using seals, covers, or boots can help prevent the entry of corrosive agents and debris.
4. Proper Lubrication: Adequate lubrication is crucial for reducing friction and preventing corrosion. Choose lubricants specifically designed for use in corrosive environments, such as those with anti-corrosion additives. Regular lubrication maintenance is necessary to ensure the chain remains well-lubricated and protected.
5. Cleaning and Maintenance: Regular cleaning and maintenance are vital to remove any corrosive substances or contaminants that may have accumulated on the chain. This includes thorough cleaning, inspection, and re-lubrication as necessary.
It is important to consult with chain manufacturers or industry experts to determine the most suitable bush chain and maintenance practices for the specific corrosive or harsh environment. By implementing these measures, a bush chain can effectively operate and withstand the challenges posed by corrosive or harsh conditions.
What are the main components of a bush chain?
A bush chain consists of several key components that work together to enable efficient power transmission. The main components of a bush chain include:
1. Bushings: Bushings are cylindrical components with a hollow bore that fit into the chain links. They provide a low-friction interface between the chain pins and the link plates, allowing smooth rotation and reducing wear.
2. Pins: Pins are cylindrical metal rods that connect the inner plates and outer plates of the chain links. They pass through the bushings and provide the rotational movement of the chain. The pins are hardened and precisely machined to withstand the loads and provide durability.
3. Link Plates: Link plates are flat metal plates that are connected by the pins. They form the main structure of the chain and transmit the tensile forces. The link plates are typically made of high-strength steel and are designed to withstand the applied loads.
4. Rollers: Some bush chains feature rollers that are located between the link plates and the bushings. These rollers allow smoother engagement with sprockets or other mating components, reducing friction and enhancing the chain’s performance. Rollers also help to maintain proper chain tension.
5. Retaining Clips or Rivets: Retaining clips or rivets are used to secure the pins in place and prevent them from rotating within the link plates. They ensure the integrity of the chain assembly and maintain the proper alignment of the components.
6. Lubrication: Lubrication is crucial for the proper functioning and longevity of a bush chain. It helps to reduce friction, minimize wear, and prevent corrosion. Lubrication can be applied through various methods, such as oil bath, oil drip, or periodic lubrication.
These components work together to provide reliable power transmission in bush chain systems. The precise design and construction of each component contribute to the overall strength, durability, and efficiency of the chain.
editor by CX 2023-09-05
China wholesaler *25-2 A Series Short Pitch Precision Duplex Dedicated Special Chain Palm Oil Chain Engineering Roller Chains and Bush Chains in Alloy/Carbon Steel
Product Description
A Series Short Pitch Precision Duplex Roller Chains & Bush Chains
| ISO/ANSI/ DIN Chain No. |
Chain No. | Pitch
P |
Roller diameter
d1max |
Width between inner plates b1min mm |
Pin diameter
d2max |
Pin length | Inner plate depth h2max mm |
Plate thickness
Tmax |
Transverse Pt mm |
Tensile strength
Qmin |
Average tensile strength Q0 kN |
Weight per meter q kg/m |
|
| Lmax mm |
Lcmax mm |
||||||||||||
| *25-2 | *04C-2 | 6.350 | 3.30 | 3.18 | 2.31 | 14.5 | 15.0 | 6.00 | 0.80 | 6.40 | 7.00/1591 | 10.0 | 0.28 |
*Bush chain: d1 in the table indicates the external diameter of the bush
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
|
Shipping Cost:
Estimated freight per unit. |
To be negotiated |
|---|
| Standard or Nonstandard: | Standard |
|---|---|
| Application: | Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car |
| Surface Treatment: | Polishing |
| Samples: |
US$ 1/Meter
1 Meter(Min.Order) | Order Sample |
|---|
| Customization: |
Available
| Customized Request |
|---|
Can a bush chain be used in high-temperature applications?
Yes, bush chains can be designed and manufactured to withstand high-temperature environments. However, the specific temperature range in which a bush chain can operate depends on several factors, including the materials used, lubrication, and the design of the chain.
When considering the use of a bush chain in high-temperature applications, it is important to consider the following:
1. Material selection: Choose materials that can withstand the elevated temperatures without significant degradation. Heat-resistant alloys or specially treated materials with high-temperature resistance are commonly used in bush chain construction.
2. Lubrication: Proper lubrication is critical in high-temperature applications to reduce friction and prevent premature wear. Select lubricants specifically formulated for high-temperature environments. These lubricants should have a higher viscosity index and thermal stability to maintain their effectiveness at elevated temperatures.
3. Design considerations: The design of the bush chain should account for the thermal expansion and contraction that occurs at high temperatures. Adequate clearance should be provided to accommodate the thermal expansion of the chain components.
4. Heat dissipation: Ensure proper heat dissipation from the chain by allowing sufficient airflow or implementing cooling mechanisms in the system. This helps to prevent excessive heat buildup and potential damage to the chain.
5. Temperature limits: Consult the manufacturer’s specifications and guidelines to determine the maximum temperature limit for the bush chain. Operating the chain within its temperature limits ensures its reliability and longevity.
It is important to note that the performance and lifespan of a bush chain can be affected by prolonged exposure to high temperatures. Continuous monitoring and regular inspections are recommended to ensure the chain’s integrity and identify any signs of wear or damage that may be accelerated by the high-temperature environment.
What are the design considerations for a bush chain system?
When designing a bush chain system, several key considerations should be taken into account to ensure its reliable and efficient operation. These design considerations include:
1. Load capacity: Evaluate the expected loads that the bush chain system will need to handle. Consider the weight, size, and type of materials or products being conveyed or transmitted. Select a bush chain with a suitable load capacity to ensure it can withstand the required loads.
2. Speed and acceleration: Determine the desired operating speed and acceleration of the bush chain system. This will influence the selection of chain pitch, material, and lubrication requirements. Higher speeds may require additional considerations such as reduced friction or increased precision.
3. Environmental conditions: Evaluate the operating environment for the bush chain system. Consider factors such as temperature, humidity, dust, chemicals, and presence of corrosive or abrasive substances. Select a bush chain material and coating that can withstand the environmental conditions and resist corrosion or wear.
4. Space limitations: Assess the available space for the installation of the bush chain system. Consider the dimensions and layout of the equipment, conveyor, or transmission system. Ensure that there is sufficient clearance for the chain’s movement and that the system can be properly tensioned and aligned.
5. Alignment and tensioning: Proper tensioning and alignment are critical for the smooth operation of a bush chain system. Design the system to include tensioners, idler sprockets, or adjustable mounting options to facilitate easy tensioning and alignment adjustments.
6. Lubrication and maintenance: Determine the lubrication requirements of the bush chain system. Consider the frequency and method of lubrication, as well as any accessibility constraints for maintenance. Select a lubrication method that suits the application, such as manual lubrication, automatic lubrication systems, or self-lubricating bush chains.
7. Safety considerations: Ensure that the bush chain system is designed with appropriate safety measures. Incorporate guards, covers, or enclosures where necessary to prevent accidental contact with moving parts. Consider emergency stop systems and safety interlocks for the protection of personnel and equipment.
By carefully considering these design factors, a bush chain system can be optimized for performance, reliability, and longevity in a specific application or industry.
What are the different types of bush chains available?
There are several types of bush chains available, each designed to meet specific application requirements. Here are some common types:
1. Standard Bush Chains: These chains have a simple construction with bushings and rollers. They are commonly used in general industrial applications that require moderate load capacity and speed.
2. Heavy-Duty Bush Chains: These chains are designed for applications that involve high loads, such as heavy machinery or equipment. They have a robust construction with thicker plates and larger diameter bushings to withstand the increased demands.
3. Extended Pitch Bush Chains: These chains have a larger pitch than standard chains, providing more space between each link. They are often used in applications that require conveying large or irregularly shaped objects, such as in material handling or packaging industries.
4. Double-Pitch Bush Chains: These chains have double the pitch of standard chains, allowing for longer spans between sprockets. They are commonly used in applications that require longer conveying distances or lower-speed operation.
5. Stainless Steel Bush Chains: These chains are made from stainless steel material, offering excellent corrosion resistance. They are suitable for applications in corrosive environments or industries with strict hygiene requirements, such as food processing or pharmaceutical manufacturing.
6. Self-Lubricating Bush Chains: These chains incorporate special materials or coatings that provide self-lubrication properties. They eliminate the need for external lubrication and reduce maintenance requirements. Self-lubricating bush chains are ideal for applications where regular lubrication is challenging or impractical.
7. Specialty Bush Chains: There are also specialty bush chains available for specific applications. These may include high-temperature chains, flame-resistant chains, or chains with specialized coatings for specific industries or environments.
When selecting a bush chain, consider the specific requirements of your application, such as load capacity, speed, environmental conditions, and maintenance needs. Consult with a supplier or engineer to determine the most suitable type of bush chain for your application.
editor by CX 2023-08-11
China Standard Chain Manufacturer 32A-2 a Series Short Pitch Precision Duplex Transmission Roller Chains and Bush Chains for Excavator Forklift
Product Description
A Series Short Pitch Precision Duplex Roller Chains & Bush Chains
| ISO/ANSI/ DIN Chain No. |
Chain No. | Pitch
P |
Roller diameter
d1max |
Width between inner plates b1min mm |
Pin diameter
d2max |
Pin length | Inner plate depth h2max mm |
Plate thickness
Tmax |
Transverse Pt mm |
Tensile strength
Qmin |
Average tensile strength Q0 kN |
Weight per meter q kg/m |
|
| Lmax mm |
Lcmax mm |
||||||||||||
| 160-2 | 32A-2 | 50.800 | 28.58 | 31.55 | 14.27 | 123.3 | 128.1 | 47.80 | 6.40 | 58.55 | 453.60/103091 | 533.8 | 20.14 |
*Bush chain: d1 in the table indicates the external diameter of the bush
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
|
Shipping Cost:
Estimated freight per unit. |
To be negotiated |
|---|
| Standard or Nonstandard: | Standard |
|---|---|
| Application: | Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car |
| Surface Treatment: | Polishing |
| Samples: |
US$ 0/Meter
1 Meter(Min.Order) | Order Sample |
|---|
| Customization: |
Available
| Customized Request |
|---|
How does a bush chain handle misalignment in a system?
A bush chain is designed to accommodate a certain degree of misalignment within a system. Here’s how a bush chain handles misalignment:
1. Flexibility: The construction of a bush chain allows it to flex and adjust to minor misalignments. The bushings, which are inserted into the chain’s links, provide a degree of flexibility and allow the chain to move smoothly even when the sprockets are slightly misaligned.
2. Self-Alignment: The self-lubricating properties of some bush chains contribute to their ability to handle misalignment. The lubrication helps reduce friction and allows the chain to self-align by adjusting its position to minimize stress and binding caused by misaligned sprockets.
3. Tolerance for Misalignment: Bush chains are designed with specific clearance between the bushings and pins. This clearance provides some tolerance for misalignment. It allows the chain to accommodate slight angular or parallel misalignment between the sprockets without causing excessive wear or damage.
4. Compensation for Load Variances: In systems where load distribution is not uniform, such as conveyor systems, bush chains can help compensate for load variances. The flexibility of the chain allows it to adapt to changes in load distribution and adjust accordingly, reducing stress on the chain and sprockets.
It is important to note that while bush chains can handle minor misalignment, excessive misalignment should be avoided. Excessive misalignment can cause accelerated wear, increased noise, and reduced chain life. Proper alignment and regular maintenance are essential to ensure optimal performance and longevity of the bush chain system.
How do you ensure proper tensioning and alignment of a bush chain?
Proper tensioning and alignment of a bush chain are crucial for its optimal performance and longevity. Here are the steps to ensure proper tensioning and alignment:
1. Tensioning:
– Consult the manufacturer’s guidelines: Refer to the manufacturer’s specifications or guidelines for the recommended tensioning method and tension values specific to the bush chain you are using.
– Check the sag: Measure the sag of the chain between two sprockets. The sag should be within the recommended range provided by the manufacturer. Adjust the tension as necessary to achieve the proper sag.
– Use a tensioning device: Depending on the application, you may use a tensioning device such as a tensioner or an idler sprocket to achieve the desired tension. These devices help maintain the tension over time as the chain wears.
2. Alignment:
– Visual inspection: Visually inspect the alignment of the chain with the sprockets. Ensure that the chain is properly seated on the sprocket teeth and running parallel to the sprocket shaft.
– Sprocket alignment: Check the alignment of the sprockets themselves. They should be aligned with each other and positioned correctly on their respective shafts.
– Adjustment: If misalignment is detected, make the necessary adjustments to align the chain and sprockets. This may involve repositioning the sprockets or adjusting the tensioning devices.
3. Regular inspection and maintenance:
– Periodically check the tension and alignment of the bush chain during routine maintenance. This ensures that any changes or deviations can be detected and corrected promptly.
– Monitor wear and elongation: Over time, bush chains may experience wear and elongation. Regularly measure the chain length or inspect for signs of elongation to determine if chain replacement or adjustment is necessary.
Proper tensioning and alignment of a bush chain optimize its performance, minimize wear, and reduce the risk of premature failure. Following the manufacturer’s guidelines and performing regular inspections and maintenance will help ensure the proper tensioning and alignment of the bush chain in your application.
How do you select the right bush chain for your application?
Choosing the right bush chain for your application is essential to ensure optimal performance and longevity. Here are some factors to consider when selecting a bush chain:
1. Load Capacity: Evaluate the maximum load that the chain will need to transmit. Consider factors such as weight, acceleration, and shock loads. Choose a bush chain with a load capacity that exceeds the anticipated load to ensure reliable operation.
2. Speed: Determine the operating speed of the chain. Higher speeds may require chains with specialized designs to minimize wear, reduce friction, and maintain accurate timing.
3. Environmental Conditions: Assess the environmental conditions in which the chain will operate. Consider factors such as temperature, humidity, dust, chemicals, and exposure to corrosive substances. Select a bush chain that is designed to withstand the specific conditions of your application.
4. Size and Configuration: Determine the required chain size based on the available space and the dimensions of the sprockets or pulleys. Consider the pitch, width, and overall dimensions of the chain. Additionally, assess whether a standard or custom configuration is needed to meet the application requirements.
5. Lubrication Requirements: Determine the lubrication method and frequency required for the chain. Some bush chains are self-lubricating, while others may require regular lubrication. Consider the availability of lubrication systems and the maintenance requirements of the chain.
6. Reliability and Durability: Assess the expected operational lifespan and the reliability requirements of your application. Look for bush chains from reputable manufacturers known for producing high-quality, durable products. Consider factors such as wear resistance, fatigue strength, and overall reliability.
7. Cost: Evaluate the cost-effectiveness of the bush chain, considering both the initial investment and long-term maintenance costs. Balance the performance requirements with the available budget.
Consult with a knowledgeable supplier or engineer to ensure you select the right bush chain that meets your specific application requirements. They can provide guidance based on their expertise and help you choose a chain that offers optimal performance and durability.
editor by CX 2023-08-08
China manufacturer DIN Power Transmission Industry Carbon Steel Stainless Steel Heavy Duty a B Series Conveyor Chain for Industrial Applications Roller Chain 08b\10b\12b\16b double pitch roller chain
Product Description
Product Description
Vision Group is 1 of the largest manufacturers of Driving Chain, Conveyor Chain, Motorcycle Chain, Hoisting Chain, Agriculture Chain, Stainless Steel Chain, Dropped Forged Rivetless Chain, Long Pitch Conveyor Chain and so on.
GB/T, DIN, ANSI, ISO, BS, JIS.
ISO9001: 2000 and ISO1400: 2004.
Product Attribute
| Product name | Transmission Standard Roller Chain |
|
Surface Treatment |
Shot Peening ,Tempering Oiling ,Nickel-plated Grease, zince plated, Heat Treatment ,Stain proofing Carburizing ,Pre-stretched and anti-fatigue ,Quenching |
| Product application | Industry machine,Agriculture, mining, metallurgy, petrochemical industry, lifting and transportation and other industries |
| Product Series |
Series A, Series B, Heavy Duty |
| material |
Stainless steel and carbon steel |
| structure |
Simplex/Duplex/Triplex |
| Port |
Any sea port or airport in China |
| Brand | TV OEM |
| Payment |
L/C, T/T, D/P, Western Union |
| Package |
Chain, Plastic Bag, Color Box, Wooden Case. or OEM |
| A Series | 03C,04C-1,06C-1,085-1,08A-1,10A-1,12A-1,16A-1,20A-1,24A-1,28A-1,32A-1,36A-1,40A-1,48A-1.
15,25,35,41,40,50,60,80,100,120,140,160,180,200,240 |
| 04C-2,06C-2,085-2,08A-2,10A-2,12A-2,16A-2,20A-2,24A-2,28A-2,32A-2,36A-2,40A-2,48A-2.
25-2,35-2,41-2,40-2,50-2,60-2,80-2,100-2,120-2,140-2,160-2,180-2,200-2,240-2. |
|
| 04C-3,06C-3,085-3,08A-3,10A-3,12A-3,16A-3,20A-3,24A-3,28A-3,32A-3,36A-3,40A-3,48A-3.
25-3,35-3,41-3,40-3,50-3,60-3,80-3,100-3,120-3,140-3,160-3,180-3,200-3,240-3. |
|
| B Series | 05B-1,06B-1,08B-1,10B-1,12B-1,16B-1,20B-1,24B-1,28B-1,32B-1,40B-1,48B-1,56B-1,64B-1,72B-1. |
| 05B-2,06B-2,08B-2,10B-2,12B-2,16B-2,20B-2,24B-2,28B-2,32B-2,40B-2,48B-2,56B-2,64B-2,72B-2. |
|
| 05B-3,06B-3,08B-3,10B-3,12B-3,16B-3,20B-3,24B-3,28B-3,32B-3,40B-3,48B-3,56B-3,64B-3,72B-3. |
|
| Heavy Duty | 08AH-1,10AH-1,12AH-1,16AH-1,20AH-1,24AH-1,28AH-1,32AH-1,36AH-1,40AH-1,48AH-1
35H,40H,50H,60H,80H,100H,120H,140H,160H,180H,200H,240H |
| 12AH-2,16AH-2,20AH-2,24AH-2,28AH-2,32AH-2,40AH-2,
35H-2,40H-2,50H-2,60H-2,80H-2,100H-2,120H-2,140H-2,160H-2,180H-2,200H-2,240H-2. |
|
| 12AH-3,16AH-3,20AH-3,24AH-3,28AH-3,32AH-3,40AH-3
35H-3,40H-3,50H-3,60H-3,80H-3,100H-3,120H-3,140H-3,160H-3,180H-3,200H-3,240H-3. |
|
| Double pitch Series |
208A,208B,210A,210B,212A,212B,216A,216AH,216B,220A,220B,224A,224B,228B,232B
2040,2050,2060,2080,2080H,2100,2120 |
| We also carry out OEM according to your requirements | |
Product Parameters
Our Advantages
Company advantages:
Own Import & Export License, The TV trade mark registered successfully in many countries, Sales network spread all over China, Products export to 65 countries in 5 continents.
Membership:
1. The member of China General Machine Components Industry Association.
2. The member of China Chain Transmission Association.
3. The member of China Chain Standardization Association.
4. The member of China Agricultural Association Machinery Manufacturers.
With our excellent trained staffs and workers, advanced and efficient equipments, completely sales network, strict QA systems. You are confidence that our premium qualified chain can meet all customers’ specification and strictest quality standards.
WHY CHOOSE US
Comprehensive Product Portfolio We produce and supply a wide range of power transmission
products including drive chains, leaf chains, conveyor chains, agricultural chains, sprockets, and
couplings. This one-store-for-all shopping experience will significantly reduce your searching costs while
guarantee youfind what you want at 1 click.
Value Choice Products Our products are the best combination of quality and price, and you get what
you want within your budgets
Seasoned Sales Associates and Engineers We have 15 seasoned sales associates and 5 engineers;
on our team at your disposal any time when you need a helping hand. They are well trained with industry
know-now and will always respond to your requests within 24 hours.
100% Customer Retention Rate Our regular customers from overseas come back not just for our
premium quality products, but for the superior services that we’ve provided over the years.
FAQ
Q1: What’s your average lead time?
A: It varies. Our regular end-to-end lead time is 1-2 months.. We also provide express shipments for rush orders. For details,please consult our sales associate.
Q2: Is your price better than your competitors given the same quality?
A: Definitely YES. We provide the most competitive price in the power transmission industry. If price disparity exists, we’ll be more than happy to do a price match.
Q3: Can you make chains according to my CAD drawings?
A: Yes. Besides the regular standard chains, we produce non-standard and custom-design products to meet the specific technical requirements. In reality, a sizable portion of our production capacity is assigned to make non-standard products.
Q4: Can we inspect the goods before shipment?
A: Yes. You or your representative or any third-party inspection party assigned is allowed access to our facility and do the inspection.
Q5: What kind of payment method is acceptable for your mill?
A: We’re flexible. We take T/T, L/C, or any other online payment methods so long as it’s applicable for you.
Q6: What if I have any other questions?
A: Whenever in doubt, you’re always encouraged to consult our sales associate any time – They will help you to your satisfaction.
|
Shipping Cost:
Estimated freight per unit. |
To be negotiated |
|---|
| Usage: | Transmission Chain |
|---|---|
| Material: | Alloy/Carbon Steel |
| Surface Treatment: | Polishing |
| Customization: |
Available
| Customized Request |
|---|
Pin chain conveyor
The choice between roller chains and friction drives depends on the usage environment. Roller chains are more resistant to dirty environments and are more suitable for conveying bulk products. The pivot chain is designed to handle highly bulk products. Ideally, the center-to-center distance between the two axles should be thirty to fifty times the chain pitch. The size of the sprocket will depend on the usage environment, which will also determine the fatigue strength and resistance of the chain.
Roller chains are more resistant to dirty environments
There are some key differences between drive chains and roller chains. The most notable difference is in the materials. Drive chains are generally more durable than roller chains. However, both chains are prone to dirty environments. While solution chains are sometimes used for heavy-duty tasks, roller chains are often used in dirtier environments. In fact, drive chains are often used when the job is very dirty and the chain has to slide on the rails.
The new lubricant used on the roller chain attracts dirt and other debris to the surface of the chain and prevents lubricant from entering the load-carrying parts of the chain, such as hinge plates, bushings, and rollers. When dust is drawn into these components, lubricants, and dirt form an abrasive paste that accelerates wear.
Lube-free roller chains keep chains clean longer. This makes it easier to specify and install in areas with strict hygiene requirements. CZPT lube-free roller chains meet NSF-H1 lubrication standards. However, lubricated roller chains are still suitable for areas where food contact is unlikely.
Stainless steel roller chains are particularly resistant to acids, alkalis, and low-temperature environments. Since stainless steel is softer than carbon steel, lubricants are not as effective at preventing dirt from entering the chain. Stainless steel roller chains have a higher strength rating than standard chains, but are not as strong as chains made from carbon steel. If you are using a roller chain in a very dirty environment, you should use a stainless steel chain.
A stud chain is more efficient than a friction drive
The present invention relates to a light-duty double-ended chain that is more efficient than conventional chains. Stud chains are made by die-forging bar steel into roughly the-shaped links. This method avoids loss of shear strength due to bending and also minimizes the welded portion. The double-headed chain is light in weight and has strong resistance to fatigue damage.
This chain type has a stud-style design. Stud-shaped design provides greater tensile strength and prevents tangling. Each stud is formed by die forging and is usually shaped like an e or th. However, it is not necessary for each stud to have a uniform cross-sectional shape. Different cross-sectional shapes can be used depending on the application.
Stud chains are more efficient than friction drives because the studs in the chain are integrated. Stud links resist large breaks. Its applications are in conveyor chains and fisheries. Wear tested on boat chains made of SBC material. In the process, bolt chains were found to be more efficient than friction drives. Its applications are rapidly expanding.
Double-ended chains are more efficient for high-load applications. It features studs throughout its internal width to prevent kinking. Chains of this type are commonly used for heavy lifting machinery. Other types of chains are roller chains, power transmission chains, and bushing roller chains. These types of chains are also widely used in motorcycle, bicycle and transportation applications. In addition to being more efficient, stud chains also have fewer wear problems than friction drive chains.
A study on the difference between wear percentage and friction time showed that stud chains are more efficient than friction drives. The friction strips were measured at the beginning of the test. Take it off after 6 hours, 10080 times, and take pictures with the same diameter. As a boundary value, the diameter of the friction strip is smaller than that of a conventional chain. This shows that the present invention has better wear resistance than friction drives.
Shaft chains designed for conveying bulk products
Pivot chains are versatile conveyors used in many applications. Low back type, small backrest distance, rear opening design to prevent the product from sticking to the joints and causing stiffness. Stainless steel and carbon bushing pin chains do not have pre-rotating rollers. In contrast, bucket elevators do not use pivot chains.
CZPT pin chains provide unmatched performance in agricultural and industrial machinery. They are constructed from a single cast barrel and are connected by hardened steel pins. CZPT’s steel pivot chains are strong enough to withstand the corrosive environments of agricultural and industrial applications. The steel pins in the CZPT Pintle Chain are hardened and riveted to ensure long-term durability and optimum performance.
Lifeguard chains feature patented interlocking side links that reduce gaps between adjacent side panels. They can withstand a variety of applications and will never break under pressure. These chains are available in 1/2” and 1” pitch configurations. CZPT combines both types of pin chains to achieve the best of both worlds. CZPT features dual pin chains and pin joints to increase chain durability and reduce maintenance hassles.
CZPT’s engineering team can custom design pivot chains for your specific application. Designed for specific speed, friction, temperature and wear requirements, these chains are ideal for a variety of applications. Headquartered in Milwaukee, Wisconsin, the company operates on two strategic platforms: Food and Beverage and Industrial Applications. The products of these companies are used in food, energy and manufacturing.
editor by CX 2023-05-23
China wholesaler DIN Power Transmission Industry Carbon Steel Stainless Steel Heavy Duty a B Series Conveyor Chain for Industrial Applications Roller Chain 08b\10b\12b\16b drives roller chain
Product Description
Product Description
Vision Group is 1 of the largest manufacturers of Driving Chain, Conveyor Chain, Motorcycle Chain, Hoisting Chain, Agriculture Chain, Stainless Steel Chain, Dropped Forged Rivetless Chain, Long Pitch Conveyor Chain and so on.
GB/T, DIN, ANSI, ISO, BS, JIS.
ISO9001: 2000 and ISO1400: 2004.
Product Attribute
| Product name | Transmission Standard Roller Chain |
|
Surface Treatment |
Shot Peening ,Tempering Oiling ,Nickel-plated Grease, zince plated, Heat Treatment ,Stain proofing Carburizing ,Pre-stretched and anti-fatigue ,Quenching |
| Product application | Industry machine,Agriculture, mining, metallurgy, petrochemical industry, lifting and transportation and other industries |
| Product Series |
Series A, Series B, Heavy Duty |
| material |
Stainless steel and carbon steel |
| structure |
Simplex/Duplex/Triplex |
| Port |
Any sea port or airport in China |
| Brand | TV OEM |
| Payment |
L/C, T/T, D/P, Western Union |
| Package |
Chain, Plastic Bag, Color Box, Wooden Case. or OEM |
| A Series | 03C,04C-1,06C-1,085-1,08A-1,10A-1,12A-1,16A-1,20A-1,24A-1,28A-1,32A-1,36A-1,40A-1,48A-1.
15,25,35,41,40,50,60,80,100,120,140,160,180,200,240 |
| 04C-2,06C-2,085-2,08A-2,10A-2,12A-2,16A-2,20A-2,24A-2,28A-2,32A-2,36A-2,40A-2,48A-2.
25-2,35-2,41-2,40-2,50-2,60-2,80-2,100-2,120-2,140-2,160-2,180-2,200-2,240-2. |
|
| 04C-3,06C-3,085-3,08A-3,10A-3,12A-3,16A-3,20A-3,24A-3,28A-3,32A-3,36A-3,40A-3,48A-3.
25-3,35-3,41-3,40-3,50-3,60-3,80-3,100-3,120-3,140-3,160-3,180-3,200-3,240-3. |
|
| B Series | 05B-1,06B-1,08B-1,10B-1,12B-1,16B-1,20B-1,24B-1,28B-1,32B-1,40B-1,48B-1,56B-1,64B-1,72B-1. |
| 05B-2,06B-2,08B-2,10B-2,12B-2,16B-2,20B-2,24B-2,28B-2,32B-2,40B-2,48B-2,56B-2,64B-2,72B-2. |
|
| 05B-3,06B-3,08B-3,10B-3,12B-3,16B-3,20B-3,24B-3,28B-3,32B-3,40B-3,48B-3,56B-3,64B-3,72B-3. |
|
| Heavy Duty | 08AH-1,10AH-1,12AH-1,16AH-1,20AH-1,24AH-1,28AH-1,32AH-1,36AH-1,40AH-1,48AH-1
35H,40H,50H,60H,80H,100H,120H,140H,160H,180H,200H,240H |
| 12AH-2,16AH-2,20AH-2,24AH-2,28AH-2,32AH-2,40AH-2,
35H-2,40H-2,50H-2,60H-2,80H-2,100H-2,120H-2,140H-2,160H-2,180H-2,200H-2,240H-2. |
|
| 12AH-3,16AH-3,20AH-3,24AH-3,28AH-3,32AH-3,40AH-3
35H-3,40H-3,50H-3,60H-3,80H-3,100H-3,120H-3,140H-3,160H-3,180H-3,200H-3,240H-3. |
|
| Double pitch Series |
208A,208B,210A,210B,212A,212B,216A,216AH,216B,220A,220B,224A,224B,228B,232B
2040,2050,2060,2080,2080H,2100,2120 |
| We also carry out OEM according to your requirements | |
Product Parameters
Our Advantages
Company advantages:
Own Import & Export License, The TV trade mark registered successfully in many countries, Sales network spread all over China, Products export to 65 countries in 5 continents.
Membership:
1. The member of China General Machine Components Industry Association.
2. The member of China Chain Transmission Association.
3. The member of China Chain Standardization Association.
4. The member of China Agricultural Association Machinery Manufacturers.
With our excellent trained staffs and workers, advanced and efficient equipments, completely sales network, strict QA systems. You are confidence that our premium qualified chain can meet all customers’ specification and strictest quality standards.
WHY CHOOSE US
Comprehensive Product Portfolio We produce and supply a wide range of power transmission
products including drive chains, leaf chains, conveyor chains, agricultural chains, sprockets, and
couplings. This one-store-for-all shopping experience will significantly reduce your searching costs while
guarantee youfind what you want at 1 click.
Value Choice Products Our products are the best combination of quality and price, and you get what
you want within your budgets
Seasoned Sales Associates and Engineers We have 15 seasoned sales associates and 5 engineers;
on our team at your disposal any time when you need a helping hand. They are well trained with industry
know-now and will always respond to your requests within 24 hours.
100% Customer Retention Rate Our regular customers from overseas come back not just for our
premium quality products, but for the superior services that we’ve provided over the years.
FAQ
Q1: What’s your average lead time?
A: It varies. Our regular end-to-end lead time is 1-2 months.. We also provide express shipments for rush orders. For details,please consult our sales associate.
Q2: Is your price better than your competitors given the same quality?
A: Definitely YES. We provide the most competitive price in the power transmission industry. If price disparity exists, we’ll be more than happy to do a price match.
Q3: Can you make chains according to my CAD drawings?
A: Yes. Besides the regular standard chains, we produce non-standard and custom-design products to meet the specific technical requirements. In reality, a sizable portion of our production capacity is assigned to make non-standard products.
Q4: Can we inspect the goods before shipment?
A: Yes. You or your representative or any third-party inspection party assigned is allowed access to our facility and do the inspection.
Q5: What kind of payment method is acceptable for your mill?
A: We’re flexible. We take T/T, L/C, or any other online payment methods so long as it’s applicable for you.
Q6: What if I have any other questions?
A: Whenever in doubt, you’re always encouraged to consult our sales associate any time – They will help you to your satisfaction.
|
Shipping Cost:
Estimated freight per unit. |
To be negotiated |
|---|
| Usage: | Transmission Chain |
|---|---|
| Material: | Alloy/Carbon Steel |
| Surface Treatment: | Polishing |
| Customization: |
Available
| Customized Request |
|---|
CZPT silent roller chain
The development of roller chains benefited from the concept of automated manufacturing introduced by Henry Ford. Conveyor belts and chains have been around for centuries, and as Ford expanded the concept of automobile manufacturing, roller chains became popular. Today, they are used in factories and lumber mills to move items quickly, sort, and move items vertically or horizontally. There are conveyors for other purposes, including sorting and placing items into truck beds.
CZPT roller chain
Founded in 1890, the company is the world’s leading manufacturer of high-performance roller chain systems. The company focuses on power transmission, industrial production, and the aftermarket. The company uses the highest quality materials for its chains and carefully designs, manufactures, and assembles each component. With more than a century of experience, the company continues to exceed customer expectations and industry standards. This is evident in the chain’s name and logo.
The company also offers manufacturers a full range of service options. These include on-site maintenance and application engineering. Headquartered in Indianapolis, Indiana, the company provides chain drive repair and maintenance services. In addition to providing best-in-class products, CZPT also provides customized service solutions for any industry. For more information, visit the CZPT website. Below are some of the benefits of choosing a CZPT roller chain.
CZPT roller chains reflect many advancements in chain technology. Its components are shot-peened with a high-speed iron shot to maximize toughness and longevity. The chain is also factory preloaded, no need to stretch and adjust prematurely to tighten the chain. Ultimately, a high-quality CZPT roller chain will save you time and money. It is the most durable roller chain on the market. Although more expensive to produce, it will last longer.
There are many types of materials used to construct roller chains. Common materials include steel, stainless steel, and brass. The material used to make the chain also plays a vital role in durability. In addition to steel, chain manufacturers use different heat treatments for their components. The quality of the pitch hole fabrication, heat treatment, and shot peening of the steel affects the fatigue strength of the chain. The design and thickness of the link plates are also important in determining fatigue strength.
CZPT silent chain
The CZPT silent chain is an inverted gear that eliminates friction during articulation. It is also a non-slip durable chain. Its design can be customized to suit various industrial applications. It features a patented wear protection system including connecting links and stainless steel components. Here are some of its benefits. There are some pros and cons here.
The “CZPT” silent chain is driven by a motor through the PS-1 capsule. The chain runs quietly, won’t slip or seize anything, and needs regular lubrication to maintain peak performance. Heavy engine oil or cup grease is an ideal lubricant. The arrows marked on each link point in the direction the chain should move. Avoid using non-solids greases.
The company’s other products include a range of worm gear reducers. CZPT is committed to providing high-quality products at affordable prices. They also manufacture miter gear reducers, plastic belts, and conveyor chains. You can contact Dalton Bearing for more information on CZPT products. We will help you determine the right solution for your specific application. You can also contact us for more information about our product line.
The CZPT Quiet Chain range features unique “M” gauge pins with high surface hardness. It also features advanced chain assembly technology. The company manufactures CZPT timing chains for motorcycle applications in Japan. Its benefits include smooth and noise-free transmission. Also, it reduces the size. Therefore, it is an excellent choice for motorcycle engines. But be sure to consult an expert before buying.
Rexnord Roller Chains
If you are looking for reliable heavy-duty roller chains, you have come to the right place. Regal Rexnord has a complete line of prestressed roller chains in all sizes and types, from single to multi-strand, as well as a wide range of accessories. Specialty chains are also available, including HV and SC chains.
Rexnord’s roller chains are available in a variety of sizes and styles, including double pitch drive chains for the long center, low-speed applications. They are made of stainless steel for corrosion resistance and are factory lubricated for easy maintenance. Rexnord’s roller chains also feature armor pins and wide waist sidebars for added safety and durability. It comes in different styles and configurations for a variety of applications including conveyors, elevators, and commercial sprinkler systems.
Competitor roller chain
Oil Field Roller Chains Market research report provides a comprehensive analysis of the market including macro and micro trends, pricing analysis, and strategic analysis of key competitors. It also includes an in-depth review of market trend innovations and key segment identification. It also provides insights into competitive scenarios and drivers driving the market growth. It also covers the latest trends and strategies for the future of the industry.
To understand the competitive landscape of the Oil Field Roller Chains market, the strengths and weaknesses of each leading manufacturer must be analyzed. One of the key measurements of a roller chain is tensile strength, which determines the ability to withstand a one-time load before breaking. Fatigue strength, on the other hand, represents the maximum load that a chain can withstand over a long period of time. By comparing these two performance metrics, you can determine the best brand and type for your specific requirements.
Application of roller chain
A roller chain is a simple mechanical power transmission system consisting of a series of short cylindrical rollers connected together by side links and driven by gears called sprockets. This simple, reliable, and efficient system is commonly used to convey materials and is ideal for many different applications. This type of chain is widely used in conveyors and bucket elevators and is available in a variety of power ratings and designs.
The most common drive chains are the single-strand standard series with power ratings ranging from 0.5 to 100 kW. Alternatively, the multi-strand model is a higher performance alternative that offers higher power capacity without increasing chain pitch or line speed. The other is the silent chain, also known as the inverted tooth chain. It is designed to be noiseless and to eliminate the negative effects of stretching. It rides on the teeth of the sprocket and its radius increases as it moves. It automatically corrects slight pitch changes. It also provides smooth, long-lasting service that runs smoothly.
A roller chain consists of 5 basic components: bushings, rollers, and pins. Each individual link is held together with a pin or bushing. The pin goes through a bushing in the inner link to prevent rotation. The advantages of roller chains make them one of the most efficient power transmission and conveying options. CZPT prides itself on its knowledge and experience in roller chain applications. Below are some common uses of roller chains.
Certain applications require less than ideal roller chain performance. To meet these challenges, manufacturers offer a variety of options. A self-lubricating chain can be used to keep the chain clean and reduce dust. Oil-contaminated chains can also be used for special applications. Other materials, such as stainless steel, can help retard corrosion and improve the wear resistance of the chain. Additionally, they can be used in a variety of environments, such as food processing machinery.
editor by CX 2023-05-22
China manufacturer a Series Roller Chain (duplex) metric roller chain
Product Description
A, B series roller chain
SPECIFICATION:
1)A series chains:
A. Simplex: 25-1~240-1
B. Duplex: 25-2~240-2
C. Triplex: 25-3~240-3
D. Quadruplex: 40-4~240-4
E. Quintuple: 40-5~240-5
F. Sextuple: 40-6~240-6
G. Octuple: 40-8~240-8
2)B series chains:
A. Simplex: 04B-1~48B-1
B. Duplex: 04B-2~48B-2
C. Triplex: 06B-3~48B-3
D. Quadruplex: 08B-4~48B-4
E. Quintuple: 08B-5~48B-5
F. Sextuple: 08B-6~48B-6
G. Octuple: 08B-8~48B-8
3)Colors available: Natural, yellow, blue, black
4)Materiials: Carbon steel, stainless steel
| Usage: | Transmission Chain |
|---|---|
| Material: | Alloy |
| Surface Treatment: | Polishing |
| Feature: | Heat Resistant |
| Chain Size: | 1/2"*11/128" |
| Structure: | Roller Chain |
| Samples: |
US$ 0/Meter
1 Meter(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
CZPT silent roller chain
The development of roller chains benefited from the concept of automated manufacturing introduced by Henry Ford. Conveyor belts and chains have been around for centuries, and as Ford expanded the concept of automobile manufacturing, roller chains became popular. Today, they are used in factories and lumber mills to move items quickly, sort, and move items vertically or horizontally. There are conveyors for other purposes, including sorting and placing items into truck beds.
CZPT roller chain
Founded in 1890, the company is the world’s leading manufacturer of high-performance roller chain systems. The company focuses on power transmission, industrial production, and the aftermarket. The company uses the highest quality materials for its chains and carefully designs, manufactures, and assembles each component. With more than a century of experience, the company continues to exceed customer expectations and industry standards. This is evident in the chain’s name and logo.
The company also offers manufacturers a full range of service options. These include on-site maintenance and application engineering. Headquartered in Indianapolis, Indiana, the company provides chain drive repair and maintenance services. In addition to providing best-in-class products, CZPT also provides customized service solutions for any industry. For more information, visit the CZPT website. Below are some of the benefits of choosing a CZPT roller chain.
CZPT roller chains reflect many advancements in chain technology. Its components are shot-peened with a high-speed iron shot to maximize toughness and longevity. The chain is also factory preloaded, no need to stretch and adjust prematurely to tighten the chain. Ultimately, a high-quality CZPT roller chain will save you time and money. It is the most durable roller chain on the market. Although more expensive to produce, it will last longer.
There are many types of materials used to construct roller chains. Common materials include steel, stainless steel, and brass. The material used to make the chain also plays a vital role in durability. In addition to steel, chain manufacturers use different heat treatments for their components. The quality of the pitch hole fabrication, heat treatment, and shot peening of the steel affects the fatigue strength of the chain. The design and thickness of the link plates are also important in determining fatigue strength.
CZPT silent chain
The CZPT silent chain is an inverted gear that eliminates friction during articulation. It is also a non-slip durable chain. Its design can be customized to suit various industrial applications. It features a patented wear protection system including connecting links and stainless steel components. Here are some of its benefits. There are some pros and cons here.
The “CZPT” silent chain is driven by a motor through the PS-1 capsule. The chain runs quietly, won’t slip or seize anything, and needs regular lubrication to maintain peak performance. Heavy engine oil or cup grease is an ideal lubricant. The arrows marked on each link point in the direction the chain should move. Avoid using non-solids greases.
The company’s other products include a range of worm gear reducers. CZPT is committed to providing high-quality products at affordable prices. They also manufacture miter gear reducers, plastic belts, and conveyor chains. You can contact Dalton Bearing for more information on CZPT products. We will help you determine the right solution for your specific application. You can also contact us for more information about our product line.
The CZPT Quiet Chain range features unique “M” gauge pins with high surface hardness. It also features advanced chain assembly technology. The company manufactures CZPT timing chains for motorcycle applications in Japan. Its benefits include smooth and noise-free transmission. Also, it reduces the size. Therefore, it is an excellent choice for motorcycle engines. But be sure to consult an expert before buying.
Rexnord Roller Chains
If you are looking for reliable heavy-duty roller chains, you have come to the right place. Regal Rexnord has a complete line of prestressed roller chains in all sizes and types, from single to multi-strand, as well as a wide range of accessories. Specialty chains are also available, including HV and SC chains.
Rexnord’s roller chains are available in a variety of sizes and styles, including double pitch drive chains for the long center, low-speed applications. They are made of stainless steel for corrosion resistance and are factory lubricated for easy maintenance. Rexnord’s roller chains also feature armor pins and wide waist sidebars for added safety and durability. It comes in different styles and configurations for a variety of applications including conveyors, elevators, and commercial sprinkler systems.
Competitor roller chain
Oil Field Roller Chains Market research report provides a comprehensive analysis of the market including macro and micro trends, pricing analysis, and strategic analysis of key competitors. It also includes an in-depth review of market trend innovations and key segment identification. It also provides insights into competitive scenarios and drivers driving the market growth. It also covers the latest trends and strategies for the future of the industry.
To understand the competitive landscape of the Oil Field Roller Chains market, the strengths and weaknesses of each leading manufacturer must be analyzed. One of the key measurements of a roller chain is tensile strength, which determines the ability to withstand a one-time load before breaking. Fatigue strength, on the other hand, represents the maximum load that a chain can withstand over a long period of time. By comparing these two performance metrics, you can determine the best brand and type for your specific requirements.
Application of roller chain
A roller chain is a simple mechanical power transmission system consisting of a series of short cylindrical rollers connected together by side links and driven by gears called sprockets. This simple, reliable, and efficient system is commonly used to convey materials and is ideal for many different applications. This type of chain is widely used in conveyors and bucket elevators and is available in a variety of power ratings and designs.
The most common drive chains are the single-strand standard series with power ratings ranging from 0.5 to 100 kW. Alternatively, the multi-strand model is a higher performance alternative that offers higher power capacity without increasing chain pitch or line speed. The other is the silent chain, also known as the inverted tooth chain. It is designed to be noiseless and to eliminate the negative effects of stretching. It rides on the teeth of the sprocket and its radius increases as it moves. It automatically corrects slight pitch changes. It also provides smooth, long-lasting service that runs smoothly.
A roller chain consists of 5 basic components: bushings, rollers, and pins. Each individual link is held together with a pin or bushing. The pin goes through a bushing in the inner link to prevent rotation. The advantages of roller chains make them one of the most efficient power transmission and conveying options. CZPT prides itself on its knowledge and experience in roller chain applications. Below are some common uses of roller chains.
Certain applications require less than ideal roller chain performance. To meet these challenges, manufacturers offer a variety of options. A self-lubricating chain can be used to keep the chain clean and reduce dust. Oil-contaminated chains can also be used for special applications. Other materials, such as stainless steel, can help retard corrosion and improve the wear resistance of the chain. Additionally, they can be used in a variety of environments, such as food processing machinery.
editor by CX 2023-04-18
China Roller chain and sprocket manufacturer Smart roller chain 40-2 in Vale do Aco Brazil Motorized ANSI Standard Gall Type a Series Smart Stainless Top Transmission Stainless Steel Plastic Metal Roller Conveyor Chains Manufacturer Industrial with ce certificate top quality low price
We – EPG Group the greatest Chain and agricultural gearbox manufacturing facility in China with 5 different branches.
EPG is a single of the most significant companies in China. We have sophisticated machines for production and new engineering testing capacity . Through adopting new engineering from British, German, U.S.A, our products are greatest sellers all over European, America, and Southeast Asia.manufacturing unit We can supply a full-range of power transmission merchandise like chains, sprockets and plate wheels, pulleys, gearboxes, motors, couplings, gears and racks pto shaft, agricultural gearboxes. of roller chains. Conveyor chains, engineered chains, silent chains, and tabletop chains are also available. Other power transmission merchandise incorporate pillow blocks, conveyor idlers, conveyor pulleys, drive shafts, gear racks, gear reducers, gears, overrunning clutches, motor bases, pulleys, screw conveyors, shaft couplings, sheaves, pace reducers, sprockets, tapered bushings, tensioners, torque limiters, and common joints. Solutions such as bearing reconditioning and restore, ball screw mend, personalized contract machining, gearbox mend and overrunning clutch restore companies are accessible. Roller chains can be used in conveyor and equipment producing, industrial processing, device rebuilding, squander drinking water, sand and gravel, tool and die, metal, metals and scrap processing industrial apps. EPG roller chain satisfies or exceeds ANSI standards and is created in ISO accredited factories. As is the case with our pillow block bearings and ball bearings, our roller chain areas are analyzed prior to shipment to insure top quality. The roller chain areas and roller chains we source are pre-stretched to insure you have constrained sag. It also comes with sound rollers, making sure that it is of the highest high quality.
Sensible Motorized ANSI StHangZhourd Gall Type a Series Intelligent Stainless Prime transmission stainless steel plastic metallic roller conveyor Chains Producer Industrial
The use of authentic gear manufacturer’s (OEM) part numbers or emblems , e.g. CASE® and John Deere® are for reference needs only and for indicating product use and compatibility. Our business and the outlined replacement elements contained herein are not sponsored, accredited, or created by the OEM.
