Product Description
Basic Info
ANSI NO: |
120-2R |
DIN/ISO NO: |
24A-2 |
Pitch (mm): |
38.100 |
Roller Diameter(mm): |
22.23 |
Pin Diameter(mm): |
11.10 |
Plate Thickness (mm): |
4.80 |
Inner Plate Width (mm): |
25.22 |
Average Tensile Strength: |
326.2KN |
Chain Size: |
5F, 10F, 5Meters |
Weight / Meter (kgs/m): |
5.62 |
Origin: |
HangZhou China |
HS Code: |
7315119000 |
1. Providing 10 series more than 8000 models of chains,Heavy duty engineering chains, oil field chains, heavy duty port crane chains, metallurgy conveyor chains, ultra-high tension escalator chains, mining chains, etc, and customized solutions.
2. More than 80% of our roller chain are exported to all over the world, We are serving customers of top 5 of world famous manufacturers , and more than 90% of our turnover are from the cooperation with the manufacturers in the world.
3. Having advanced online inspection for automatic assembly lines.
4. Having nation level Enterprise Technology Center, we cost no less than 13% of our annual turnover investment in R&D each year.
5. Having our own Standardization Management Committee in our company, and participated in the formulation and modification of the roller chain standards of the People’s Republic of China.
SMCC roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc
Our CHINAMFG chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CHINAMFG for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.
Workshop Show
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.
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Production Scope: | Product Line |
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Automation: | Automation |
After-sales Service: | 1 Year |
Samples: |
US$ 30/Meter
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Available
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about shipping cost and estimated delivery time. |
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Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Maintenance Requirements for a Toothed Chain and Prolonging Its Lifespan
Maintaining a toothed chain is essential to ensure its optimal performance and longevity. Here are the key maintenance requirements and steps to prolong the lifespan of a toothed chain:
- Regular Lubrication: Proper lubrication is crucial to reduce friction and wear between the chain’s components. Follow the manufacturer’s recommendations for the type and frequency of lubrication. Use a suitable chain lubricant and apply it evenly along the chain’s length.
- Tension Adjustment: Periodically check the chain’s tension and make adjustments as needed. A loose chain can lead to excessive wear and jumping off the sprockets, while an overly tight chain can increase the load on the chain and the entire system.
- Inspect for Wear: Routinely inspect the chain for signs of wear, elongation, and damage. Look for elongation of the chain, damaged or worn teeth, and any visible defects. If significant wear is detected, consider replacing the chain to avoid potential failures.
- Keep It Clean: Keep the chain and surrounding area clean from dirt, debris, and contaminants. A clean environment helps reduce wear and prevents foreign particles from entering the chain joints.
- Address Misalignment: Ensure that the sprockets and chain are properly aligned. Misalignment can cause uneven wear and premature failure. Make necessary adjustments to achieve proper alignment.
- Replace Damaged Parts: If any components of the toothed chain, such as the sprockets or connecting pins, show signs of damage or excessive wear, replace them promptly. Using damaged parts can lead to chain failure and potential damage to the machinery.
- Avoid Overloading: Avoid subjecting the chain to loads beyond its rated capacity. Overloading can cause accelerated wear and may lead to chain failure. Consider using a chain with a higher load rating if needed.
- Follow Operating Limits: Operate the machinery within the designated speed and temperature limits specified by the chain manufacturer. Exceeding these limits can compromise the chain’s performance and durability.
- Proper Storage: If the chain is not in use, store it in a clean and dry environment to prevent corrosion and damage during storage.
Conclusion: Regular maintenance and proper care are essential to extend the lifespan of a toothed chain. Following the recommended maintenance practices, such as regular lubrication, tension adjustment, and inspection for wear, will help ensure the chain’s reliable performance and reduce the risk of unexpected failures. By addressing maintenance requirements promptly and avoiding misuse, you can significantly prolong the life of the toothed chain and optimize the performance of your machinery or equipment.
Can Toothed Chains Be Customized for Specific Applications, and What Options Are Available for Customization?
Yes, toothed chains can be customized for specific applications to meet the unique requirements of different industries and machinery. Customization allows manufacturers to tailor the toothed chains to specific dimensions, materials, and performance characteristics. Here are some common options available for customization:
- Chain Size and Pitch: Toothed chains can be customized to different sizes and pitches to match the specific dimensions of the machinery or equipment they will be used with. Custom sizing ensures proper engagement with the sprockets and optimal performance.
- Material Selection: Depending on the application’s environmental conditions and requirements, toothed chains can be customized with various materials. Stainless steel chains, plastic chains, and corrosion-resistant coatings are some of the options available for specific industry needs.
- Load Capacity: Custom toothed chains can be designed to handle varying load capacities, ensuring they can withstand the specific forces and torques experienced during operation. This is crucial for heavy-duty applications that require robust chains.
- Speed: Toothed chains can be customized to operate at different speeds based on the machinery’s requirements. Customizing the chain’s tooth profile and material can optimize its performance at specific speeds.
- Temperature Resistance: For applications in extreme temperatures, toothed chains can be customized with materials and lubricants that provide the required temperature resistance and maintain their performance under harsh conditions.
- Noise Reduction: Custom toothed chains can be designed with features to reduce noise during operation. Innovations in tooth profile, materials, and coatings can minimize chain noise for quieter performance.
- Special Coatings: To improve wear resistance and reduce friction, toothed chains can be customized with special coatings, such as PTFE, molybdenum disulfide, or other self-lubricating coatings.
- Attachment Options: Customized toothed chains can be equipped with specific attachment options, such as pins, extended pins, or specialized connectors, to accommodate specific material handling or conveyor requirements.
- Environmental Compliance: For applications in industries with specific regulations or standards, toothed chains can be customized to meet environmental compliance requirements, such as FDA regulations in the food processing industry.
Conclusion: Toothed chains can be fully customized to suit the unique needs of specific applications in various industries. Customization options include chain size and pitch, material selection, load capacity, speed, temperature resistance, noise reduction, special coatings, attachment options, and environmental compliance. Manufacturers can work with toothed chain suppliers or manufacturers to create tailored solutions that optimize performance, reliability, and efficiency for their specific machinery or equipment.
What is a toothed chain, and what are its primary applications in various industries?
A toothed chain, also known as a timing chain or synchronous chain, is a type of chain that features tooth-like profiles on its inner surface. These teeth mesh with corresponding sprockets, providing precise synchronization and power transmission in various mechanical systems. The teeth on the chain prevent slippage, making it ideal for applications requiring accurate timing and motion control.
Primary applications of toothed chains can be found in several industries:
- Automotive Industry: Toothed chains are extensively used in automotive engines to synchronize the rotation of the camshaft and crankshaft, ensuring proper valve timing and engine performance.
- Industrial Automation: In manufacturing and automation processes, toothed chains are used in conveyor systems, robotic arms, and other machinery that require precise motion control and synchronization.
- Printing Industry: Toothed chains are employed in printing presses to control the movement of paper and ensure accurate registration of colors and images.
- Textile Industry: In textile machinery, toothed chains are used to control the movement of fabrics and yarns during various production processes.
- Packaging Industry: Toothed chains are utilized in packaging machines to maintain precise timing for filling, sealing, and labeling operations.
- Agriculture: In agricultural machinery, toothed chains are used for power transmission in equipment such as combine harvesters and tractors.
- Medical Equipment: Toothed chains find applications in medical devices that require precise motion control and synchronization.
The primary advantages of toothed chains include their ability to handle high loads, transmit power efficiently, and maintain precise timing in demanding industrial environments. They are designed to withstand heavy-duty operations and offer long service life, making them a reliable choice for various industries that require accurate and reliable power transmission.
editor by CX 2024-04-23
China manufacturer Engineering and Construction Machinery Timing Teeth Motorcycle Parts General Hardware Driving Roller Chains with Kana/America/European Standard in Alloy Steel
Product Description
Chain No. |
Pitch
P |
Roller diameter
d1 max |
Width between inner plates b1 min mm |
Pin diameter
d2 max |
Pin length | Inner plate depth h2 max mm |
Plate thickness
t/T max |
Transverse pitch
Pt mm |
Tensile strength
Q |
Average tensile strength Q0 |
Weight per meter q kg/m |
|
L max mm |
Lc max mm |
|||||||||||
16AF93 | 25.400 | 15.88 | 12.70 | 7.92 | 25.0 | 28.5 | 20.50 | 2.03 | – | 28.00/63616 | 30.80 | 1.74 |
16AF94 | 25.400 | 15.88 | 33.50 | 7.92 | 50.5 | 52.0 | 24.00 | 3.25 | – | 55.60/12636 | 61.16 | 3.77 |
#C16AF112 | 25.400 | 18.25 | 15.90 | 9.54 | 45.4 | – | 24.50 | 6.00 | – | 116.2/26122 | 122.00 | 5.40 |
20AF22 | 31.750 | 19.05 | 18.90 | 9.53 | – | 44.7 | 30.00 | 4.00 | – | 50.00/11360 | 55.00 | 3.97 |
20AF26 | 31.750 | 19.05 | 30.80 | 9.53 | 64.0 | 64.0 | 30.00 | 4.00 | – | 86.70/19704 | 95.37 | 5.03 |
20AF31-5 | 31.750 | 19.05 | 18.90 | 9.53 | 183.6 | 187.9 | 30.10 | 4.00 | 35.76 | 550.00/124998 | 605.00 | 20.20 |
24AF5-4 | 38.100 | 22.23 | 19.05 | 11.10 | 161.3 | 165.3 | 35.70 | 4.80 | 39.16 | 498.2/113225 | 548.02 | 21.88 |
24AF18-2 | 38.100 | 22.23 | 25.20 | 11.10 | 97.3 | 101.2 | 35.70 | 4.80 | 45.44 | 249.1/56612 | 274.01 | 12.00 |
24AF19 | 38.100 | 22.23 | 25.22 | 11.10 | 50.3 | – | 35.70 | 4.80 | – | 95.0/21590 | 104.50 | 5.71 |
24AF20-2 | 38.100 | 22.23 | 25.22 | 11.10 | 105.4 | 109.2 | 35.70 | 4.80 | 45.44 | 254.0/57099 | 279.40 | 12.56 |
28AF1-2 | 44.450 | 25.40 | 25.22 | 12.70 | 103.3 | 112.2 | 41.00 | 5.60 | 48.87 | 338.1/76816 | 371.90 | 15.06 |
32AF2 | 50.800 | 32.00 | 31.75 | 17.00 | 64.8 | 69.6 | 48.00 | 6.40 | – | 200.0/45454 | 222.50 | 11.61 |
32AF9 | 50.800 | 28.58 | 41.55 | 14.27 | 86.0 | 86.0 | 47.80 | 6.4/8.8 | – | 222.4/50544 | 244.64 | 11.55 |
32AF33 | 50.800 | 28.58 | 89.75 | 14.27 | 123.3 | 128.1 | 47.80 | 6.40 | – | 222.4/50544 | 244.64 | 16.01 |
#C32AF36 | 50.800 | 28.58 | 46.77 | 14.29 | 63.8 | 63.8 | 44.45 | 6.40 | – | 200.0/45454 | 220.00 | 14.85 |
32AF42 | 50.800 | 32.00 | 31.75 | 17.00 | 68.0 | 72.8 | 48.00 | 7.20 | – | 200.0/44960 | 220.00 | 12.55 |
32AT | 50.800 | 28.58 | 15.88 | 14.27 | 36.2 | 40.8 | 47.80 | 3.25 | – | 111.2/25272 | 123.60 | 5.21 |
36AF2 | 57.150 | 33.34 | 35.48 | 17.46 | 72.8 | 78.6 | 53.60 | 7.20 | – | 280.20/63681 | 308.22 | 13.17 |
HangZhou Star Machine Technology Co.,ltd. is a leading global chain drive product supplier with the widest product range. We have 5 state-of-the-art production bases and regional distribution centres and workshops in France, Germany, Netherlands, Thailand, UK, Hungary and the USA. Xihu (West Lake) Dis.hua has built a network of global design, R&D, manufacturing, sales and market service. We have provided over 12,000 varieties of chains for the global market.
HangZhou Star Machine Technology Co.,ltd. has 2 production bases in China, covering more than 47,000 square metres, with over 678 employees, including over 57 people with various professional skills. We have created multiple professional divisions according to chain application. Xihu (West Lake) Dis.hua has established a national certified Enterprise Technology Center in China to drive CHINAMFG product innovation and continuously satisfy customer demand.
We concentrate on providing high quality products and convenient local service.
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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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.
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Usage: | Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain |
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Material: | Alloy |
Surface Treatment: | Polishing |
Feature: | Heat Resistant |
Chain Size: | 1045, Stainless Steel , Q235, Brass |
Structure: | Roller Chain |
Samples: |
US$ 0/Meter
1 Meter(Min.Order) | |
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Customization: |
Available
| Customized Request |
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Specialized Lubricants and Treatments to Enhance Toothed Chain Performance
There are various specialized lubricants and treatments available that can significantly enhance the performance and lifespan of a toothed chain. These products are designed to reduce friction, wear, and corrosion, improving the overall efficiency and reliability of the chain system. Here are some examples of such lubricants and treatments:
- Chain Lubricants: Manufacturers produce specific chain lubricants that are formulated to provide excellent adhesion and penetration properties. These lubricants are designed to withstand high pressures and temperatures, reducing friction between the chain’s components and minimizing wear. Additionally, chain lubricants often have anti-corrosion properties to protect the chain from rust and oxidation.
- Dry Film Lubricants: Dry film lubricants, such as PTFE (Polytetrafluoroethylene) or molybdenum disulfide, create a thin, dry layer on the chain’s surfaces. This film reduces metal-to-metal contact, lowers friction, and improves the chain’s resistance to wear and corrosion. Dry film lubricants are especially useful in applications where traditional liquid lubricants may attract dust or dirt.
- Coatings and Surface Treatments: Some toothed chains come with specialized coatings or surface treatments that enhance their performance. For example, chains may have zinc plating or black oxide coatings to improve corrosion resistance. Surface treatments like carburizing or nitriding can increase the chain’s surface hardness, making it more wear-resistant.
- Self-Lubricating Chains: Self-lubricating chains are engineered with embedded lubricant reservoirs or solid lubricant plugs. These lubricants are released gradually during operation, ensuring a constant supply of lubrication to the chain’s components. Self-lubricating chains reduce maintenance needs and offer smoother, quieter operation.
- Special Additives: Some lubricants may contain special additives like extreme pressure (EP) additives or anti-wear agents to provide additional protection under high loads and harsh operating conditions. These additives form a protective layer on the chain surfaces, reducing wear and extending the chain’s life.
Conclusion: Specialized lubricants and treatments play a vital role in enhancing the performance of toothed chains. They reduce friction, wear, and corrosion, leading to improved efficiency, longevity, and reliability of the chain system. When selecting lubricants or treatments, consider factors such as the operating environment, load requirements, and the manufacturer’s recommendations. Proper and regular application of these products will help ensure the smooth and trouble-free operation of the toothed chain in your machinery or equipment.
Are There Any Innovative Designs or Technologies That Improve the Efficiency of Toothed Chains?
Yes, there have been several innovative designs and technologies that aim to improve the efficiency of toothed chains. These advancements focus on enhancing performance, reducing wear, increasing load-carrying capacity, and improving overall reliability. Here are some notable innovations:
- Inverted Tooth Chains: Inverted tooth chains are designed with the tooth profiles facing inward instead of outward. This design reduces impact and sliding friction between the chain links and the sprockets, leading to smoother and quieter operation. The reduced friction results in lower wear rates and improved efficiency.
- Advanced Materials: The use of advanced materials, such as high-strength alloys, composite materials, or special coatings, can significantly enhance the strength and wear resistance of toothed chains. These materials also exhibit improved fatigue properties, allowing the chain to withstand higher loads and operate more efficiently over an extended service life.
- Optimized Tooth Profiles: Innovations in tooth profile design focus on reducing friction, noise, and wear. Advanced tooth profiles, such as parabolic or modified involute profiles, ensure smoother engagement with the sprockets, leading to better power transmission efficiency and reduced energy losses.
- Self-Lubricating Chains: Self-lubricating toothed chains incorporate lubricant-filled reservoirs or solid lubricants embedded in the chain material. This design provides a continuous and controlled supply of lubrication to the critical wear points, reducing friction and wear and improving overall efficiency.
- Low-Friction Coatings: Applying low-friction coatings, such as PTFE or molybdenum disulfide, to the chain’s contact surfaces can reduce friction and wear. These coatings provide a smooth surface finish, minimizing the risk of metal-to-metal contact and improving the chain’s efficiency.
- Preloading Techniques: Preloading techniques involve applying initial tension to the chain during installation. This method reduces initial elongation and helps maintain optimal tension throughout the chain’s service life, enhancing efficiency and reducing the need for frequent adjustments.
- Smart Monitoring Systems: Advancements in sensor technology and data analytics have led to the development of smart monitoring systems for toothed chains. These systems can monitor chain condition, tension, and wear in real-time, allowing for predictive maintenance and optimizing chain performance.
Conclusion: The efficiency of toothed chains has significantly improved through various innovative designs and technologies. Inverted tooth chains, advanced materials, optimized tooth profiles, self-lubricating features, low-friction coatings, preloading techniques, and smart monitoring systems all contribute to increased efficiency, reduced wear, and improved overall performance. Manufacturers and users can benefit from these advancements to select the most suitable toothed chain for their specific applications and ensure optimal efficiency and reliability in power transmission and material handling systems.
Advantages of Using a Toothed Chain in Power Transmission Systems
There are several advantages to using a toothed chain in power transmission systems:
- 1. High Efficiency: Toothed chains provide efficient power transmission due to their low frictional losses and minimal slippage.
- 2. Precision and Accuracy: The teeth on the chain mesh with the sprocket teeth, ensuring accurate and precise power delivery.
- 3. Large Load Capacity: Toothed chains can handle high loads, making them suitable for heavy-duty applications.
- 4. Compact Design: Compared to belt drives, toothed chains have a more compact design, saving space in the system.
- 5. Wide Speed Range: Toothed chains can operate at various speeds, making them versatile for different applications.
- 6. Long Service Life: Properly lubricated and maintained toothed chains have a long service life, reducing maintenance costs.
- 7. Shock Absorption: Toothed chains have some level of shock-absorbing capability, protecting the components from sudden impacts.
- 8. Reliability: Toothed chains are known for their reliability, making them suitable for critical applications.
- 9. Cost-Effective: Considering their longevity and low maintenance needs, toothed chains offer cost-effective power transmission solutions.
editor by CX 2024-01-08
China manufacturer Chain Manufacturer DIN/ANSI/ASME Standard Short-Pitch 24A-2 Precision Motorcycle Parts Timing Teeth General Hardware Roller Chains
Product Description
Basic Info
ANSI NO: |
120-2R |
DIN/ISO NO: |
24A-2 |
Pitch (mm): |
38.100 |
Roller Diameter(mm): |
22.23 |
Pin Diameter(mm): |
11.10 |
Plate Thickness (mm): |
4.80 |
Inner Plate Width (mm): |
25.22 |
Average Tensile Strength: |
326.2KN |
Chain Size: |
5F, 10F, 5Meters |
Weight / Meter (kgs/m): |
5.62 |
Origin: |
HangZhou China |
HS Code: |
7315119000 |
1. Providing 10 series more than 8000 models of chains,Heavy duty engineering chains, oil field chains, heavy duty port crane chains, metallurgy conveyor chains, ultra-high tension escalator chains, mining chains, etc, and customized solutions.
2. More than 80% of our roller chain are exported to all over the world, We are serving customers of top 5 of world famous manufacturers , and more than 90% of our turnover are from the cooperation with the manufacturers in the world.
3. Having advanced online inspection for automatic assembly lines.
4. Having nation level Enterprise Technology Center, we cost no less than 13% of our annual turnover investment in R&D each year.
5. Having our own Standardization Management Committee in our company, and participated in the formulation and modification of the roller chain standards of the People’s Republic of China.
SMCC roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc
Our CHINAMFG chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CHINAMFG for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.
Workshop Show
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.
Shipping Cost:
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To be negotiated |
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US$ 30/Meter
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Can Toothed Chains be Used in High-Speed Applications, and Limitations to Their Speed
Yes, toothed chains can be used in high-speed applications, but there are certain limitations to consider. Toothed chains are commonly employed in various industrial machinery and equipment where reliable power transmission is required at high speeds. However, their suitability for high-speed applications depends on several factors:
- Chain Type: Different types of toothed chains have varying speed capabilities. For example, roller chains are commonly used in high-speed applications due to their smooth operation, while silent chains or inverted tooth chains may have limitations at higher speeds.
- Design and Quality: The design and manufacturing quality of the toothed chain play a crucial role in its ability to handle high speeds. Precision manufacturing and quality materials are essential to reduce vibration, noise, and wear at high speeds.
- Lubrication: Proper lubrication is vital for reducing friction and wear in toothed chains operating at high speeds. Insufficient or improper lubrication can lead to accelerated wear and potential failure.
- Tension and Alignment: Maintaining proper tension and alignment of the chain is critical at high speeds. Inadequate tension or misalignment can cause the chain to jump or derail from the sprockets.
- Temperature: High-speed operations can generate significant heat due to friction. Ensure that the operating temperature remains within the chain’s specified limits to prevent premature wear or failure.
Limitations to Their Speed:
- Dynamic Loading: At high speeds, the dynamic loading on the toothed chain increases significantly. This can lead to higher stress levels on the chain’s components, potentially causing fatigue and reducing the chain’s life.
- Vibration and Noise: Toothed chains operating at high speeds can generate increased vibration and noise. Excessive vibration can be detrimental to the chain’s performance and may affect the surrounding machinery.
- Centrifugal Force: At high speeds, centrifugal force can impact the chain’s behavior, causing it to stretch and potentially come off the sprockets if not adequately tensioned.
- Wear and Fatigue: High-speed applications can accelerate wear and fatigue in the chain, necessitating more frequent inspections and maintenance.
Conclusion: Toothed chains can be used in high-speed applications, but their performance is subject to various factors and limitations. To ensure safe and reliable operation at high speeds, it’s essential to select the appropriate chain type, maintain proper tension and alignment, use quality materials, and provide adequate lubrication. Regular inspections, monitoring, and preventive maintenance are vital to address wear and mitigate the effects of high-speed operation on toothed chains.
Industry Standards and Certifications for Toothed Chains
Yes, there are industry standards and certifications that ensure the quality and reliability of toothed chains. These standards provide guidelines for the design, manufacturing, and testing of toothed chains to meet specific performance and safety requirements. Some of the notable standards and certifications include:
- ISO 606 (International Organization for Standardization): ISO 606 specifies the dimensions and interchangeability of metric pitch silent chains and associated chainwheels. It ensures compatibility between different manufacturers’ chains and sprockets, allowing for easier replacement and maintenance.
- ISO 1275: ISO 1275 covers the design and construction of leaf chains used for lifting purposes. It ensures the chains’ safety and performance when used in lifting and hoisting equipment.
- ANSI/ASME B29.1 (American National Standards Institute/American Society of Mechanical Engineers): This standard covers roller chains, attachments, and sprockets. It provides guidelines for dimensions, tolerances, and interchangeability of roller chains and sprockets, ensuring uniformity and compatibility in power transmission systems.
- BS ISO 4347 (British Standards Institution): BS ISO 4347 specifies the characteristics of metric pitch conveyor chains and chain wheels used in the mechanical handling of unit loads. It ensures the chains’ reliability and performance in conveyor systems.
- DIN 8187 (Deutsches Institut für Normung): DIN 8187 is a German standard that covers the design and dimensions of power transmission chains and sprockets. It ensures that chains and sprockets from different manufacturers can work together effectively.
- JIS B1801 (Japanese Industrial Standards): JIS B1801 covers roller chains, chain wheels, and sprockets for power transmission. It provides specifications for various types of roller chains used in machinery and equipment.
- CE Marking: For chains used in machinery sold within the European Union, compliance with relevant health, safety, and environmental protection standards is mandatory. The CE marking indicates that the chain meets the essential requirements of EU directives.
- API RP 7G (American Petroleum Institute Recommended Practice): API RP 7G provides guidelines for inspection and classification of used chain and chain drives in drilling and production operations in the petroleum and natural gas industry.
Conclusion: Industry standards and certifications play a crucial role in ensuring the quality, performance, and reliability of toothed chains. Manufacturers and users can refer to these standards to select the appropriate chain type, ensure compatibility with sprockets, and maintain safe and efficient operation in various applications, from power transmission systems to lifting and conveyor equipment.
How to Select the Right Toothed Chain Size and Pitch for Your Machinery or Equipment
Choosing the correct toothed chain size and pitch for your machinery or equipment is crucial to ensure efficient and reliable power transmission. Here’s a step-by-step guide to help you with the selection process:
- Identify the Power Transmission Requirements: Determine the power and torque requirements of your machinery. Calculate the transmitted power and the expected load on the chain.
- Identify the Speed and RPM: Determine the required speed and RPM (Revolutions Per Minute) of the chain drive. This information will help in selecting a chain with the appropriate strength and pitch.
- Understand the Environment: Consider the operating environment of your machinery. If it’s exposed to harsh conditions, such as high temperatures, chemicals, or dust, you’ll need a chain with suitable materials and coatings for better durability.
- Calculate the Pitch: Measure the distance between the centers of two consecutive chain pins. This measurement is known as the pitch. Choose a chain with a pitch that matches your machinery’s requirements.
- Select the Chain Type: There are different types of toothed chains available, such as roller chains, silent chains, and inverted tooth chains. Each type has specific characteristics and applications. Choose the one that best suits your machinery’s needs.
- Consider the Number of Teeth: Check the number of teeth on both the driving and driven sprockets. Ensure that the chain and sprockets are compatible and that the chain wraps around the sprocket adequately.
- Calculate the Tensile Strength: Determine the required tensile strength of the chain based on the maximum load it will experience during operation. Choose a chain with a tensile strength that exceeds this value.
- Verify with Manufacturer’s Data: Cross-reference your calculations and requirements with the manufacturer’s data and specifications for the selected chain. Manufacturers often provide detailed charts and catalogs to help you select the appropriate chain size and pitch for specific applications.
- Consider Safety Factors: It’s essential to include safety factors in your calculations to ensure a reliable and safe power transmission system. Consider factors such as shock loads, misalignment, and the potential for increased loads in the future.
- Regular Maintenance: Once you’ve selected and installed the toothed chain, perform regular maintenance, including proper lubrication and tension adjustment, to extend its service life and maintain optimal performance.
editor by CX 2023-09-19
China wholesaler Engineering and Construction Machinery Timing Teeth Motorcycle Parts General Hardware Driving Roller Chains with Kana/America/European Standard in Alloy Steel
Product Description
Chain No. |
Pitch
P |
Roller diameter
d1 max |
Width between inner plates b1 min mm |
Pin diameter
d2 max |
Pin length | Inner plate depth h2 max mm |
Plate thickness
t/T max |
Transverse pitch
Pt mm |
Tensile strength
Q |
Average tensile strength Q0 |
Weight per meter q kg/m |
|
L max mm |
Lc max mm |
|||||||||||
16AF93 | 25.400 | 15.88 | 12.70 | 7.92 | 25.0 | 28.5 | 20.50 | 2.03 | – | 28.00/63616 | 30.80 | 1.74 |
16AF94 | 25.400 | 15.88 | 33.50 | 7.92 | 50.5 | 52.0 | 24.00 | 3.25 | – | 55.60/12636 | 61.16 | 3.77 |
#C16AF112 | 25.400 | 18.25 | 15.90 | 9.54 | 45.4 | – | 24.50 | 6.00 | – | 116.2/26122 | 122.00 | 5.40 |
20AF22 | 31.750 | 19.05 | 18.90 | 9.53 | – | 44.7 | 30.00 | 4.00 | – | 50.00/11360 | 55.00 | 3.97 |
20AF26 | 31.750 | 19.05 | 30.80 | 9.53 | 64.0 | 64.0 | 30.00 | 4.00 | – | 86.70/19704 | 95.37 | 5.03 |
20AF31-5 | 31.750 | 19.05 | 18.90 | 9.53 | 183.6 | 187.9 | 30.10 | 4.00 | 35.76 | 550.00/124998 | 605.00 | 20.20 |
24AF5-4 | 38.100 | 22.23 | 19.05 | 11.10 | 161.3 | 165.3 | 35.70 | 4.80 | 39.16 | 498.2/113225 | 548.02 | 21.88 |
24AF18-2 | 38.100 | 22.23 | 25.20 | 11.10 | 97.3 | 101.2 | 35.70 | 4.80 | 45.44 | 249.1/56612 | 274.01 | 12.00 |
24AF19 | 38.100 | 22.23 | 25.22 | 11.10 | 50.3 | – | 35.70 | 4.80 | – | 95.0/21590 | 104.50 | 5.71 |
24AF20-2 | 38.100 | 22.23 | 25.22 | 11.10 | 105.4 | 109.2 | 35.70 | 4.80 | 45.44 | 254.0/57099 | 279.40 | 12.56 |
28AF1-2 | 44.450 | 25.40 | 25.22 | 12.70 | 103.3 | 112.2 | 41.00 | 5.60 | 48.87 | 338.1/76816 | 371.90 | 15.06 |
32AF2 | 50.800 | 32.00 | 31.75 | 17.00 | 64.8 | 69.6 | 48.00 | 6.40 | – | 200.0/45454 | 222.50 | 11.61 |
32AF9 | 50.800 | 28.58 | 41.55 | 14.27 | 86.0 | 86.0 | 47.80 | 6.4/8.8 | – | 222.4/50544 | 244.64 | 11.55 |
32AF33 | 50.800 | 28.58 | 89.75 | 14.27 | 123.3 | 128.1 | 47.80 | 6.40 | – | 222.4/50544 | 244.64 | 16.01 |
#C32AF36 | 50.800 | 28.58 | 46.77 | 14.29 | 63.8 | 63.8 | 44.45 | 6.40 | – | 200.0/45454 | 220.00 | 14.85 |
32AF42 | 50.800 | 32.00 | 31.75 | 17.00 | 68.0 | 72.8 | 48.00 | 7.20 | – | 200.0/44960 | 220.00 | 12.55 |
32AT | 50.800 | 28.58 | 15.88 | 14.27 | 36.2 | 40.8 | 47.80 | 3.25 | – | 111.2/25272 | 123.60 | 5.21 |
36AF2 | 57.150 | 33.34 | 35.48 | 17.46 | 72.8 | 78.6 | 53.60 | 7.20 | – | 280.20/63681 | 308.22 | 13.17 |
HangZhou Star Machine Technology Co.,ltd. is a leading global chain drive product supplier with the widest product range. We have 5 state-of-the-art production bases and regional distribution centres and workshops in France, Germany, Netherlands, Thailand, UK, Hungary and the USA. Xihu (West Lake) Dis.hua has built a network of global design, R&D, manufacturing, sales and market service. We have provided over 12,000 varieties of chains for the global market.
HangZhou Star Machine Technology Co.,ltd. has 2 production bases in China, covering more than 47,000 square metres, with over 678 employees, including over 57 people with various professional skills. We have created multiple professional divisions according to chain application. Xihu (West Lake) Dis.hua has established a national certified Enterprise Technology Center in China to drive CZPT product innovation and continuously satisfy customer demand.
We concentrate on providing high quality products and convenient local service.
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 |
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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.
Usage: | Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain |
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Material: | Alloy |
Surface Treatment: | Polishing |
Feature: | Heat Resistant |
Chain Size: | 1045, Stainless Steel , Q235, Brass |
Structure: | Roller Chain |
Samples: |
US$ 0/Meter
1 Meter(Min.Order) | |
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Customization: |
Available
| Customized Request |
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Can Toothed Chains be Used in High-Speed Applications, and Limitations to Their Speed
Yes, toothed chains can be used in high-speed applications, but there are certain limitations to consider. Toothed chains are commonly employed in various industrial machinery and equipment where reliable power transmission is required at high speeds. However, their suitability for high-speed applications depends on several factors:
- Chain Type: Different types of toothed chains have varying speed capabilities. For example, roller chains are commonly used in high-speed applications due to their smooth operation, while silent chains or inverted tooth chains may have limitations at higher speeds.
- Design and Quality: The design and manufacturing quality of the toothed chain play a crucial role in its ability to handle high speeds. Precision manufacturing and quality materials are essential to reduce vibration, noise, and wear at high speeds.
- Lubrication: Proper lubrication is vital for reducing friction and wear in toothed chains operating at high speeds. Insufficient or improper lubrication can lead to accelerated wear and potential failure.
- Tension and Alignment: Maintaining proper tension and alignment of the chain is critical at high speeds. Inadequate tension or misalignment can cause the chain to jump or derail from the sprockets.
- Temperature: High-speed operations can generate significant heat due to friction. Ensure that the operating temperature remains within the chain’s specified limits to prevent premature wear or failure.
Limitations to Their Speed:
- Dynamic Loading: At high speeds, the dynamic loading on the toothed chain increases significantly. This can lead to higher stress levels on the chain’s components, potentially causing fatigue and reducing the chain’s life.
- Vibration and Noise: Toothed chains operating at high speeds can generate increased vibration and noise. Excessive vibration can be detrimental to the chain’s performance and may affect the surrounding machinery.
- Centrifugal Force: At high speeds, centrifugal force can impact the chain’s behavior, causing it to stretch and potentially come off the sprockets if not adequately tensioned.
- Wear and Fatigue: High-speed applications can accelerate wear and fatigue in the chain, necessitating more frequent inspections and maintenance.
Conclusion: Toothed chains can be used in high-speed applications, but their performance is subject to various factors and limitations. To ensure safe and reliable operation at high speeds, it’s essential to select the appropriate chain type, maintain proper tension and alignment, use quality materials, and provide adequate lubrication. Regular inspections, monitoring, and preventive maintenance are vital to address wear and mitigate the effects of high-speed operation on toothed chains.
Differences Between Synchronous and Non-Synchronous Toothed Chains, and When to Choose Each Type
Synchronous and non-synchronous toothed chains are two main types of toothed chains, each serving different purposes based on their design and functionality. Here are the key differences between the two and when you should choose each type:
- Synchronous Toothed Chains:
- Design: Synchronous toothed chains, also known as timing chains, have a tooth profile that matches precisely with the teeth of the sprockets. This ensures accurate and synchronous power transmission, resulting in precise positioning and motion control.
- Functionality: Synchronous chains are designed to maintain constant speed ratios between the driving and driven sprockets. They do not slip, providing accurate and repeatable positioning, making them ideal for applications that require precise timing and synchronization.
- Applications: Synchronous toothed chains are commonly used in applications where accurate positioning, timing, and synchronization are critical. Examples include automotive engine timing systems, robotics, CNC machines, and other precision machinery.
- Advantages: Synchronous chains offer excellent accuracy, low backlash, and high torque-carrying capacity. They are reliable and provide smooth motion, making them suitable for applications that demand precision and repeatability.
- Non-Synchronous Toothed Chains:
- Design: Non-synchronous toothed chains have a tooth profile that may not perfectly match the sprocket teeth. They are designed more for general power transmission rather than precise timing.
- Functionality: Non-synchronous chains can accommodate slight speed variations between the driving and driven sprockets. They can absorb shock and vibration, making them suitable for applications where timing accuracy is not critical.
- Applications: Non-synchronous toothed chains are used in various power transmission applications, such as conveyor systems, industrial machinery, and agricultural equipment.
- Advantages: Non-synchronous chains are more forgiving in terms of alignment and speed fluctuations. They can handle varying loads and shock loads, making them versatile for a wide range of applications.
Conclusion: The choice between synchronous and non-synchronous toothed chains depends on the specific requirements of the application. Choose synchronous toothed chains when precise timing, synchronization, and repeatability are essential, such as in precision machinery and robotics. Opt for non-synchronous toothed chains when the application demands general power transmission with some flexibility in speed variations and shock absorption, as commonly seen in conveyor systems and industrial machinery.
What is a toothed chain, and what are its primary applications in various industries?
A toothed chain, also known as a timing chain or synchronous chain, is a type of chain that features tooth-like profiles on its inner surface. These teeth mesh with corresponding sprockets, providing precise synchronization and power transmission in various mechanical systems. The teeth on the chain prevent slippage, making it ideal for applications requiring accurate timing and motion control.
Primary applications of toothed chains can be found in several industries:
- Automotive Industry: Toothed chains are extensively used in automotive engines to synchronize the rotation of the camshaft and crankshaft, ensuring proper valve timing and engine performance.
- Industrial Automation: In manufacturing and automation processes, toothed chains are used in conveyor systems, robotic arms, and other machinery that require precise motion control and synchronization.
- Printing Industry: Toothed chains are employed in printing presses to control the movement of paper and ensure accurate registration of colors and images.
- Textile Industry: In textile machinery, toothed chains are used to control the movement of fabrics and yarns during various production processes.
- Packaging Industry: Toothed chains are utilized in packaging machines to maintain precise timing for filling, sealing, and labeling operations.
- Agriculture: In agricultural machinery, toothed chains are used for power transmission in equipment such as combine harvesters and tractors.
- Medical Equipment: Toothed chains find applications in medical devices that require precise motion control and synchronization.
The primary advantages of toothed chains include their ability to handle high loads, transmit power efficiently, and maintain precise timing in demanding industrial environments. They are designed to withstand heavy-duty operations and offer long service life, making them a reliable choice for various industries that require accurate and reliable power transmission.
editor by CX 2023-08-18
China Custom Industrial Conveyor Drive Chain Motorcycle Parts Manufacturers Steel Link Plastic Film Recycling Machinery Roller Chains custom roller chain
Product Description
Company Profile
-HangZhou CHOHO Industrial Co., Ltd. was founded in 1999. Has become the leader of chain system technology, the first batch of natioal recognized enterprise technology center,national technology innovation demonstration enterprise,and the first A-share listed company in China’s chain drive industry.The securities code is 003033.
-CHOHO has 4 subsidiaries, including testing technology and international trading companies. has 4 factories in HangZhou, Thailand factory, ZheJiang R&D Center and Tokyo R&D Center. In addition, CHOHO ZHangZhoug Industrial zone is expected to be completed & put into operation next year.
-We specialized in producing all kinds of standard chains and special chains, such as Agricultural Chain, Sprocket, Chain Harrow, Tillage Parts,Rice Harvester Chain, GS38 Chain, Roller Chain, Automobile Chain, Motorcycle Chain Industrial Chain and so on.Our partners among world top enterprises, such as LOVOL,NEWHOLLAND, CLASS,AGCO,DEUTZFAHR,HONDA, KUBOTA etc.
Production Capacity Equipment
By 2571,CHOHO has more than 2,700 sets of main production equipment and more than 600 sets of high-precision equipment,With the domestic advanced product laboratory and chain production assembly line, CHOHO has strong research and development and testing capabilities for high-end chain products.
Our Advantages
1. Any inquiry you make will be answered professionally within 6~8 hours.
2. Attaches great importance to product quality and approved by many global quality system certification,such as France, Norway, Germany.
3. Focused on Chain since 1999, have rich experience in Production.
4. High-quality workers,First-class advanced equipment,good quality control,advanced technology.
5. Be Good at Custom-Made Products, provide customized services for customers.
6. Participated in the drafting of 24 national and industrial standards such as chains.As of 2571-Mar, CHOHO has 180 authorized patents.
7. With the responsibility of “Providing high quality chain system with the same service life for the global locomotive industry”, have established a strong R&D team.
CHOHO has a natural brand awareness. As of January 2571, CHOHO has registered the “CHOHO” trademark in more than 60 countries, including the United States, Japan, the United Kingdom, France, Germany, Russia, Spain, Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Finland, Greece , Hungary, Ireland, Italy, Netherlands, Poland, Portugal, Romania, Ukraine, Sweden, Australia, Algeria, Egypt, Kenya, Morocco, South Korea, Kazakhstan, Mongolia, Syria, Thailand, Pakistan, India, Brazil, Mexico, Colombia, etc.
Product Advantages
— Ten CoreTechnologies — |
1 | Chain strengh preload technology | 2 | Pin CRV treatment technology |
3 | Plate smoothly punching technology | 4 | Bush oil hole technology |
5 | Vacuum Oiled Technology | 6 | Precision Punching Technology |
7 | Low frequency fatigue test technology for lange size chain | 8 | Chain length comparison technology |
9 | Variation of silence design technology | 10 | Chain dynamic testingtechnology technologies |
Certifications
CHOHO attaches great importance to product quality and approved by many global quality system certification, such as France, Norway, and Germany. Through the establishment of a sophisticated production management process and quality control system, the entire product process control is achieved. With the introduction of advanced production, processing, and testing equipment, CHOHO has internationally leading full-process quality control capabilities to provide customers with high-quality products.
Choho Provide Chain System Solutions for The Global Top 500 and The Enterprises in Various Fields Top 10!
Broad Customer Channels Market Continues to Develop!
CHOHO has been invited to participate in domestic & international agricultural machinery exhibitions, such as Hannover Messe, Bologna Fair, Canton Fair ,VIV ASIA and so on!
Packaging & Shipping
Packaging Details: | Chain+Plastic Bag+Neutral Box+Wooden case+Big Carton+Steel Pallets or Customization |
FAQ
1. Are you manufacturer or trade Company?
We are a factory focused on producing and exporting Chain over 23 years,have a professional international trade team.
2. What terms of payment you usually use?
T/T 30% deposit and 70% against document, L/C at sight.
3. What is your lead time for your goods?
Normally 30~45 days.Stock can be shipped immediately.
4. Do you attend any Show?
We attend Hannover show in Germany, EIMA in Italy, CZPT in France, CIAME in China and many other Agricultural machinery shows.
5.Do you offer free samples?
Yes,we can.or you just bear the shipping cost.
6.Is OEM available?
Yes, OEM is available. We have professional designers to help you design.
After-sales Service: | Repair/Replacement/Refund |
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Structure: | Conveyor System |
Material: | Stainless Steel |
Material Feature: | Oil Resistant, Heat Resistant, Fire Resistant |
Application: | Chemical Industry, Grain Transport, Mining Transport, Power Plant |
Condition: | Used |
Samples: |
US$ 5/Meter
1 Meter(Min.Order) | |
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Customization: |
Available
| Customized Request |
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Different types of drive chains
There are many different types of drive chains. You should be able to differentiate between roller chains, forged rivetless chains, double chains, flat-top chains, and helical chains by the terms used. This article will provide information on the different types of chains. Then, you can choose the right one according to your needs. If you haven’t purchased a chain yet, read this article to get started. It will also provide information on the pros and cons of each type.
roller chain
There are several differences between drive chains and roller chains, but in essence, the two are functionally similar. The choice of which type to use depends largely on the type of environment it will be exposed to. While roller chains are suitable for clean indoor environments, they are not very forgiving when it comes to rubbing against the rails. Following are the main differences between a drive chain and a roller chain. Using the correct drive chain is essential for a smooth and efficient running machine.
Roller chain drive chains come in many different weights and tensile strengths. For light-duty applications, use a smaller pitch chain. For heavy-duty applications, use larger pitch chains. The design simplicity of these chains makes them ideal for a variety of applications. While they are great for a variety of applications, the durability of these chains makes them ideal for a variety of applications. Some of the main uses of roller chain drive chains are listed below.
When replacing the drive chain, be sure to follow the safety guidelines. The most important thing to remember is not to place the chain on a dirty floor as it may cause stretch or damage. After removing the chain from the sprocket, apply the measured load specified by ANSI to it. If the load exceeds this value, the chain may bend. A suitable load for measuring a drive chain should be at least six links.
While roller chains are usually made of carbon steel, some are made of stainless steel and are used in food processing machinery. In these environments, the chain may be made of stainless steel for lubrication. Brass and nylon are also sometimes used to meet these requirements. Regardless of the application, however, choosing the right drive chain is critical to the success of a roller chain machine. It is important to maintain the proper balance between the roller chain and the machine.
To properly use a roller chain, first determine the size of the sprocket used for the drive. The size of the chain should be smaller than the smallest sprocket to prevent tooth interference and provide adequate winding on the smaller sprocket. A good practice is to choose a drive chain with a center distance of 30 to 50 times the chain pitch. The longest possible center-to-center distance is approximately 80 times the chain pitch but is not recommended for high-speed applications.
Drop forged rivetless chain
Drop-forged rivetless drive chains are made of drop-forged steel components. Their proportions are suitable for strength and lightweight. Forged rivetless chains are generally divided into three types. Each of these types has its own set of important specifications. Key topics include minimum ultimate tensile strength, chain length tolerances, and link dimensions. Read on to learn more about each type and its uses.
One of the main features of forged rivetless chains is that, despite their relatively low price, they are designed to be very durable. The quality of a forged chain depends on the structure and design of the chain. The manufacturer of this type of drive chain is CZPT, which has a large stock of these chains. The chain is proof tested after assembly and comes with a two-year parts replacement warranty.
Forged rivetless chains are available in a variety of pitch sizes and strength grades. They are made of cast manganese or alloy steel and have an average strength of 24,000 to 300,000 pounds. These chains are suitable for automotive, conveyor, and material handling as well as meat packaging, sugar processing, and steel mill applications. They are also widely used in conveying systems. To ensure quality and performance, manufacturers offer a variety of forged chains.
CZPT offers forged CZPT drive chains for fatigue-free operation. The chain includes a solid one-piece forged drive pawl for optimum durability. Chains are available in Figure 8 and in D-shape styles. For more information, please contact CZPT directly. Custom Drop-Forged rivetless drive chains can be ordered. Manufacturers also offer custom chains for specific application needs.
double chain
Duplex drive chains have two sets of rollers instead of one, producing twice the power. Double chain roller chains have pins and roller bearings, while triple chain chains have an extra row of plates to accommodate the three sprockets. They are usually interchangeable with each other. They are available for US, UK, and ISO standards. They are made of carbon steel, stainless steel, and nickel or nickel-plated.
flat top chain
Flat-top drive chains are ideal for curved or straight tracks and come in many different types and thicknesses. These chains are highly resistant to wear and are usually made of steel, stainless steel, or plastic. CZPT manufactures special brands of flat-top chains with high wear resistance and excellent noise reduction. In addition to being versatile, flat-top chains can be used in a variety of industrial applications.
There are two main types of CZPT chains: solid top or raised rib. One piece is formed from a single unit link and the other has roller base links for added strength. The two-piece chain combines flat tabletop links and a roller bottom chain for added strength. These chains are available in widths up to 20 feet and are available in a variety of widths. These chains are available in stainless steel, cast iron, or plastic.
The hinge pin is another important part of the flat top chain system. Support chain plate to ensure smooth conveying. The hinges are available in single hinge pin and double hinge pin styles. Standard hinge pins are designed for straight, narrow-width chainplates; double hinge pins are designed for longer, heavier products. The hinge pins also come in many different materials, including aluminum and galvanized steel. This allows for customization based on machine design, operating conditions, and drive method.
Whether your flat-top chain conveyor system is large or small, a high-quality flat-top chain will get the job done. With their low maintenance and low maintenance design, these chains are easy to clean and maintain. They can accommodate workpiece pallets of various sizes, and their flexibility makes them ideal for many different applications. They can also be highly customized for various industries. So if you need an industry-specific conveyor, then a flat-top drive chain is the way to go.
editor by CX 2023-05-25