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China Custom Conveyor Belt 240h-2 Heavy Duty Series Duplex Roller Chains and Bush Chains with Link and Marine Hardware

Product Description

Heavy Duty Series Duplex Roller Chains & Bush Chains

Chain No.


Roller diameter


Width between inner plates
Pin diameter


Pin length Inner plate depth
Plate thickness


Transverse pitch
Tensile strength


Average tensile strength
Weight per meter
q kg/m
240H-2 76.200 47.63 47.35 23.81 212.6 223.1 72.30 12.70 101.22 1000/227270 1200.0 60.50



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.


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.


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.


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.


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.



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.


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.


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)
14 28 25 18
38 38 35 316
12 48 41 14
12 48 40 516
58 58 50 38
34 68 60 12
1 88 80 58

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.



1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System


The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.

We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.

Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Food and Beverage Industry, Motorcycle Parts
Surface Treatment: Polishing
Structure: Roller Chain
Material: Alloy
Type: Short Pitch Chain
US$ 0/Meter
1 Meter(Min.Order)

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Customized Request

duplex chain

What are the benefits of using a duplex chain in industrial equipment?

Duplex chains offer several advantages when used in industrial equipment:

  • High Strength: Duplex chains are designed to handle heavy loads and high torque, making them suitable for demanding industrial applications. They are made from durable materials such as alloy steel, which provides excellent strength and reliability.
  • Efficient Power Transmission: Duplex chains have low friction and high efficiency, allowing for efficient power transmission between the driving and driven components of the industrial equipment. This results in smooth operation and minimal energy loss.
  • Wide Range of Sizes and Configurations: Duplex chains are available in a variety of sizes and configurations to accommodate different equipment requirements. This flexibility makes them suitable for various industrial applications, ranging from small machinery to large-scale systems.
  • Easy Installation and Maintenance: Duplex chains are relatively easy to install and maintain. They can be quickly assembled and adjusted, and their design allows for easy lubrication and inspection. Proper lubrication and regular maintenance help ensure optimal performance and extend the chain’s service life.
  • Versatility: Duplex chains are versatile and can be used in a wide range of industrial equipment, including conveyors, agitators, mixers, elevators, and more. They are capable of handling diverse operating conditions, such as high loads, variable speeds, and harsh environments.
  • Cost-Effective: Duplex chains offer a cost-effective solution for power transmission in industrial equipment. They have a long service life when properly maintained, reducing the need for frequent replacements and minimizing downtime and associated costs.

Overall, the use of duplex chains in industrial equipment provides reliable power transmission, durability, and versatility, contributing to efficient and smooth operation in various industrial applications.

duplex chain

How do duplex chains handle misalignment between sprockets?

Duplex chains are designed to handle a certain degree of misalignment between sprockets. However, excessive misalignment can lead to premature wear and reduced chain life. Here are some key points to understand:

  • Duplex chains can tolerate small misalignments between sprockets due to their flexible construction. The side plates and link connections allow for some angular and axial movement.
  • Minor misalignments can be accommodated through the natural flexing and articulation of the chain as it engages with the sprockets. This flexibility helps the chain to adjust and maintain proper engagement with the sprocket teeth.
  • However, it is important to note that excessive misalignment should be avoided. Excessive misalignment can cause the chain to experience increased wear, uneven load distribution, and increased stress on the chain components.
  • To minimize misalignment-related issues, it is recommended to ensure proper alignment of the sprockets during installation. This includes aligning the sprockets parallel to each other and ensuring the correct center-to-center distance.
  • Regular inspection and maintenance of the chain drive system are also essential to identify any misalignment issues early on and take corrective measures.
  • In cases where significant misalignment is unavoidable, special chain types or guides can be considered to mitigate the effects of misalignment and improve the chain’s performance and longevity.

Overall, while duplex chains can tolerate some misalignment, it is important to strive for proper sprocket alignment during installation and regular maintenance to optimize the chain’s performance and lifespan.

duplex chain

What are the advantages of using a duplex chain in power transmission systems?

A duplex chain offers several advantages when used in power transmission systems. Here are some key benefits:

  • Higher load capacity: Duplex chains are designed to handle higher loads compared to standard single-strand chains. With two parallel rows of links, a duplex chain provides increased strength and load-bearing capacity, making it suitable for applications that require heavy-duty power transmission.
  • Improved durability: The dual-row design of a duplex chain enhances its durability and resistance to wear and fatigue. The load is distributed across multiple strands, reducing stress on individual components and extending the chain’s service life.
  • Better power transmission: Due to its robust construction, a duplex chain offers excellent power transmission efficiency. It minimizes energy losses and ensures reliable transfer of power from the driving sprocket to the driven sprocket, resulting in efficient operation of the machinery.
  • Enhanced stability and reliability: The use of two parallel rows of links provides improved stability and reduces the risk of chain derailment or jumping off the sprockets. This enhances the overall reliability of the power transmission system, especially in applications with high-speed or fluctuating loads.
  • Flexible design options: Duplex chains are available in a variety of sizes, pitches, and materials, allowing for flexibility in system design. They can be tailored to suit specific power transmission requirements and environmental conditions, ensuring optimal performance in various industrial applications.
  • Easy maintenance: Duplex chains typically require minimal maintenance. They are designed for easy installation, lubrication, and adjustment, making routine maintenance tasks more convenient. Regular inspection and proper lubrication help prolong the chain’s life and maintain its performance.

Overall, the advantages of using a duplex chain in power transmission systems include higher load capacity, improved durability, efficient power transmission, enhanced stability, flexibility in design, and ease of maintenance. These features make duplex chains a reliable and efficient choice for a wide range of industrial applications that require robust and dependable power transmission.

China Custom Conveyor Belt 240h-2 Heavy Duty Series Duplex Roller Chains and Bush Chains with Link and Marine Hardware  China Custom Conveyor Belt 240h-2 Heavy Duty Series Duplex Roller Chains and Bush Chains with Link and Marine Hardware
editor by CX 2023-09-05

China wholesaler Double Pitch 300 400 600 Series Stainless Steel Conveyor Roller Chains with Attachment with Good quality




specialchainwithaccessories,weldingchain,leafcZheJiang dsprocket
40,fifty,sixty,eighty,a hundred,120,140,a hundred and sixty,a hundred and eighty,200,240
Collection Aseries,Bseries










Wearea factoryfoundedin1997withtradeteamforinternationalservice.


Normally35daysafterconfirmedorder.30dayscouldbeavailableinlowseasonforsomeitems(duringMaytoJuly),and45daysduringnewyearandhotseason( JantoMarch).


Roller Chain Principles

Just before picking the proper roller chain for your device, it is required to learn some fundamentals. Find out about sprockets, tensile toughness, pitch, and width. Read through this article to find out much more. It will support you make an educated choice. Getting the appropriate item is essential, but it is not often as simple as choosing a model name. You want to decide on a organization that supports its goods and provides good provider.

Roller sprocket

If you are arranging to obtain roller sprockets for your application, you ought to first look at the various sorts available. Sprockets obtainable for single-strand roller chains are created by Boston Steel – Kind B sprockets are drilled to dimensions. They are obtainable in 1/4, 3/8, 1/2, 5/8, 3/4 and 1″ pitch dimensions.
The diameter of the sprocket is critical when selecting the correct sprocket for your software. Making use of a caliper to evaluate the diameter of a toothless plate is a good way to determine the exact dimension of the sprocket. A caliper is the diameter of a plate with no enamel. On Kind B and C sprockets, the hub diameter measures the thickness of the hub.
Another variety of sprocket is the metal break up sprocket, which is break up in diameter. This type is simple to set up and take away, and is held together by bolts in the hub. Generally, break up sprockets have chain pitches ranging from 40 to 240 and bores ranging from 3/4″ to 6″. The split sprockets are created with one pointing in the direction of the ceiling and the other two parallel to the ground.
When shopping for sprockets, it is critical to don’t forget that they are created exclusively for a particular chain. All chains are manufactured to distinct standards. In the United States, the most widespread common is ANSI. The chain pitch is the length between the heart of each pin and the heart of the subsequent pin. In the US, the normal is usually measured in 8-inch intervals.
In addition to sprocket dimensions, sprocket pitch and the surface region also affect chain life. As opposed to belt sprockets, which are produced of cast steel, the teeth on roller sprockets are stamped from steel sheet or pressed from powdered steel. The tougher the tooth, the for a longer time the chain will very last.

Roller chain pitch

The pitch of a roller chain is the distance between the sprocket and the pin. The smaller the thread pitch, the more compact the bushing use. Usually talking, the smaller sized the pitch, the longer the daily life of the chain. For greatest functionality and longest lifestyle, manufacturers advise a bare minimum chain pitch of 2% to 3%. Chain pitch is important to make certain proper performance, and the producer suggests that you change the chain when it reaches 2% to 3% of normal.
To figure out the correct chain pitch for a particular chain, first decide the sprocket size and pitch. Pitch is the distance in between pin centers, calculated in 1/8 inch increments. The pin diameter of the chain is also crucial. If you might be not certain about the pin diameter of your chain, measure a few backlinks to get a good average reading through. Alternatively, use a caliper to measure the inside diameter of the sprocket and depend the variety of enamel.
When sizing a sprocket, evaluate the chain in between the gears with a caliper and assess it to the measurements on the chain size chart. Make sure you have checked all the specs and checked the appropriate chain pitch. Then, pick the right chain pitch for your needs. This is a critical action in selecting the correct chain. So get the proper pitch for your roller chain. Proper pitch will help ensure maximum functionality and safety.
To recognize a certain type of roller chain, evaluate its tensile toughness. This signifies the amount of load the chain can stand up to before breaking. Yet another key parameter to take into account is exhaustion energy. Chains with higher tiredness power are a lot more resistant to rust and put on than chains with low tiredness strength. The numbers on the correct in the standard numbering represent standard or mild responsibility chains, while the numbers on the still left symbolize the pitch of hefty-duty chains.
Double pitch roller chains are a variant of single pitch chains. They are created in accordance to ISO 606 and fulfill the identical standards as single pitch chains. They are mainly employed in programs with reduce demands for speed and energy transmission. The plates of double pitch roller chains are also lengthier than one pitch chains. The double pitch push collection is also employed for elevator and lengthy conveyor drives. There are a few main sorts of roller chains: one-pitch chains, double-pitch carriers, and outsized rollers.

Roller chain width

When buying a roller chain, 1 of the first conclusions you need to make is its width. To make this perseverance, you need to evaluate the general width of the chain, the diameter, and the width of each roller. You should also know the top and thickness of the board. Following using these measurements, you can commence buying for the perfect roller chain. But ahead of you acquire a new chain, it truly is important to know what to anticipate from the chain by itself.
There are several distinct types of roller chains. These chains are accessible for ANSI and metric measurements. They occur in solitary-stranded and double-stranded variants. They are usually utilized for electrical power transmission. Other kinds contain agricultural, automotive, conveyor, multi-strand, and four-strand chains. These charts also consist of a chart so you can easily see the exact measurement you need. Outlined underneath are some of the positive aspects of acquiring a roller chain.
Roller diameter and pin diameter are important elements in selecting the correct chain width. The width of the chain is the nearest binary fraction of 5/8 of an inch. It need to be at the very least 50 % the thickness of the sprocket, and the plate thickness is one particular-eighth the width of the chain. Obese chains are indicated with the suffix H. The pitch and width of the chain are identified by the working load and device velocity.
The outer hyperlinks of the roller chain are referred to as pin back links. These pins are inserted into the bushings of the adjacent roller hyperlinks. They are held in area by cotter pins. Pin backlinks are generally pressed into the pins of weighty-duty chains. These pins are used to maintain the rollers in location. Nevertheless, these pin chains can reduce the electricity rating of roller chains by up to twenty%.
The ANSI 29.1 Steel Chain Specification specifies a bare minimum pitch in inches and final energy of 12,five hundred x pitch in inches. At the same time, the O-ring chain drastically reduces wear owing to its lubricating result. O-ring and X-ring chains incorporate a lubricant injected by vacuum when riveting the chain with each other. Transmission chains are tested and governed by requirements bodies such as ANSI. In 2011, the American Modern society of Mechanical Engineers produced a common for precision energy transmission chains.

Roller chain tensile strength

A single of the most important indicators of roller chain toughness is tensile power. This measurement refers to the amount of load the chain can face up to ahead of breaking. Yet another evaluate, referred to as tiredness strength, refers to the optimum load a chain can face up to before it breaks. The strength of a roller chain relies upon on its dimension, the high quality of the metal utilized in its design, and the heat treatment. There are also differences in the sorts of shot peening utilised to handle metal, pitch holes, and hyperlink plates.
When choosing a roller chain, the workload is vital. This is the greatest load the chain can endure just before exhaustion failure takes place. This measurement is critical because it helps figure out the variety of load applied to the chain. When selecting which roller chain to buy, be confident to think about the mechanical kind and wanted toughness. Then, make positive it satisfies energy and load-carrying capability specifications.
The supreme tensile power of a roller chain is based mostly on the manufacturer’s advised optimum tensile toughness. Nevertheless, the real tensile energy could be greater or reduce than this benefit. The doing work load limit of a roller chain can also be calculated by multiplying the chain diameter by the grade. The doing work load restrict of a chain is the greatest stress it can stand up to ahead of breaking. This worth is generally expressed in points.
The optimum tensile energy of roller chains varies by chain kind. The one-strand hefty chain has thick facet plates for increased shock loads. One strand hefty-obligation roller chains, also identified as “bushing” roller chains, are also available. Double-stranded large chains are structurally similar, but they have two layers of steel linked by pins that are virtually twice as powerful as common roller chains.
The tensile strength of a single-strand roller chain is approximately 500 tons. In comparison, a single-chain blockchain has a tensile strength of 900. The tensile power of the two is equivalent, and it is not recommended to pick one or the other. Although steel and titanium chains are regarded the strongest resources for roller chains, these supplies are not magnetic.

China wholesaler Double Pitch 300 400 600 Series Stainless Steel Conveyor Roller Chains with Attachment     with Good quality

China Hot selling Roller Chains Precision a Series Simplex& Bush Duplex Triplex Multiple Heavy Duty Cranked-Link Inverted Tooth Self-Tooth-Forming Hy-Vo Self-Lubrication Chains with Free Design Custom



HZPTChainCorp. offersafullrangeofbothprecisionrollercZheJiang dengineered.Applicationsarevariedandrangefromconveyor,elevatortransfertobroadgeneralindustrialpowertransmissionspecialtyapplicationswithattachmentsand/orspecialmaterialsarealsoavailable.



ASAROLLERCHAIN:35,40,41,fifty,sixty,60H,eighty,80H,100,120,a hundred and forty,a hundred and sixty,200,240(Catalog)


LARGEPITCHCHAIN:100,100H,120,120H,one hundred forty,140H,160,160H,one hundred eighty,two hundred,240







Roller Chain Maintenance Ideas

There are many things to hold in brain when sustaining a roller chain. The principal reasons consist of friction and exterior influences. Without having suitable lubrication and adjustment, this sort of chains will put on prematurely. Listed here are some guidelines for trying to keep your roller chain in leading form. continue reading through! This will make your procedure easier. We will also go over the cost of the new roller chain. As usually, keep in mind to check for free finishes and change the chain regularly.


Roller chains are created to accommodate a lot of various kinds of hundreds. Sprockets are the main lead to of chain put on. Axial and angular misalignment happens when the sprocket faces are not properly aligned. The two types of misalignment enhance tension and wear on the roller chain. They can also negatively have an effect on the push. As a result, deciding on the proper chain is an important thing to consider.
Preloading will help to eliminate original elongation and increase provider existence. The benefits of preloading can be seen in the preloading chart. Substantial elongation takes place for the duration of travel startup with no or minimal preload. This is due to the surface area hardness of the worn parts. On the other hand, a appropriately preloaded chain exhibits tiny elongation during the preliminary start. Consequently, appropriate preload can lengthen wear life.
Although elongation is a natural phenomenon in any generate, it can be minimized or eradicated with appropriate upkeep. In addition to typical inspections, you ought to do a complete inspection of your chain following the initial hundred several hours. This inspection need to focus on crucial daily life aspects these kinds of as 3% elongation, how the chain is lubricated, and any other issues that might have an effect on daily life. A very good good quality chain ought to have the longest lifestyle and no difficulties.
There are a lot of various roller chain requirements. A good rule of thumb is to choose chains with at the very least five back links. Then, tighten the chain until a crack occurs, and it will tell you what type of break happened. Alternatively, you can use a roller chain with the maximum allowable load. As long as the MAL doesn’t exceed that number, it is nonetheless perfectly protected to use it for any application.


When it will come to lubrication, there are many various techniques. For example, spray lubrication is a well-liked approach for high-horsepower drives and large-load and quick-relocating devices. This technique is really efficient, but it is expensive, and spraying the chain as well much out of the guard can lead to leaks. An additional common strategy is brush lubrication. Brush lubrication entails implementing a continuous movement of oil to the chain, pushing it into the chain. This lubrication strategy minimizes the software temperature of the chain. Also, it can prolong the lifestyle of the chain, based on the manufacturer’s requirements.
Even though the lubrication of roller chain couplings may differ by application, sprocket hubs must be lubricated monthly to make sure appropriate sealing. The amount of oil employed relies upon on the rotational velocity and the variety of roller chain coupling. In general, lubricants utilized in roller chain couplings need to have outstanding adhesion, oxidation, and mechanical security.
Wear-resistant lubricants are advisable. They prevent the rollers from sticking to each other and avoid rusting. These lubricants have minimal floor tension and are not harmful to steel or O-ring chains. The the best possible lubrication approach depends on ambient temperature, horsepower, and chain pace. Correctly lubricating a roller chain increases the lifestyle of the chain and decreases the danger of use.
Appropriate lubrication of the roller chain is important to avert corrosion and lengthen its support life. The oil kinds a easy film on the chain components, minimizing metallic-to-metallic speak to and minimizing friction and use. Additionally, the oil supplies a clean running surface and decreases noise. Even so, the running-in approach of roller chain lubrication cannot be underestimated. When using heavy-obligation oils, make certain that the lubricant is compatible with operating and ambient temperatures.


To prolong the lifestyle of your roller chain, you want to have out normal inspections. First, you must verify the T-pin on the website link plate at the joint. If they are not linked appropriately, it can result in the chain to extend and not sustain proper spacing and timing. Subsequent, you should appear for uncommon sounds, corrosion, and grime that could point out wear. If you recognize any of these issues, it really is time to substitute the chain.
In order to correctly maintain a roller chain, equally areas of the roller chain must be lubricated with the proper lubricant. Lubricants used should be SAE non-degreased oils. There are many types of lubricants offered, but the very best a single is a petroleum-based mostly oil with a substantial viscosity. You can also check out for indicators of use, such as purple or brown discoloration. This indicates that there is not ample lubrication.
Although the daily life expectancy of a roller chain is mysterious, it is critical to know how to prolong its lifestyle and increase its efficiency. Incorrect rigidity and alignment can shorten its existence and spot undue anxiety on the push method and the chain by itself. Incorrect rigidity can also lead to slippage and improved vitality output. Therefore, you should compute the pressure and alignment of the chain in the course of the original set up. Check out and modify often.
An additional way to extend the existence of your rollers is to completely clear the inside of and exterior of the rollers. You need to also lubricate it usually to avert too much heat buildup. Designed to stop overheating by limiting the sum of work throughout split-ins. In addition, regular inspections will aid you catch anomalies early ample to stop operations. Very last but not minimum, typical lubrication will lengthen the lifestyle of the roller chain.


Buying a roller chain is a big choice, but preliminary expense should not be the only consideration. The value of the roller chain by itself, as nicely as the operating fees, ought to be regarded. Even the lowest-priced chains can be more costly in the long run. Additionally, servicing and strength costs might boost. The very best roller chain for your enterprise will be the one particular that best suits your demands. Shown under are some considerations to consider when purchasing a roller chain.
First, what material need to you use? Roller chains occur in a lot of diverse components. Stainless steel is a generally utilized content in design. Resources are selected primarily based on the price and design and style of chain horsepower transmission. Various manufacturing processes will figure out which material is ideal for your software. Also, the excess weight of the chain will fluctuate relying on its pitch and the development strategy used. A massive part of the price of a roller chain is on the drive sprocket.
An additional consideration is set up cost. Roller chains are typically utilized in agricultural and transportation purposes, specially for agronomic merchandise. If lubrication is your worry, routine maintenance-totally free chains are the greatest option. Corrosion-resistant chains are excellent for wet environments. They are marketed in boxed lengths, so replacing a more time length requires including a shorter size. To steer clear of trouble, use the skateboard to aid join the backlinks.
Another thought is the total width. The all round width of an open #forty roller chain could range but need to be at least 10 feet extensive. Despite the fact that it is not the most costly type of roller chain, it will last longer. Making use of it accurately will enhance its overall longevity, so it truly is a great notion to decide on it correctly. If your organization makes use of roller chains regularly, the cost reduction is properly well worth it.


A roller chain is composed of a pair of alternating pins and roller back links. The pins are pressed into the side panels and hinged to the rollers. Roller chains can be solitary or multi-strand, related by a typical pin. The multi-strand style gives greater shear strength for demanding energy transmission apps. Common purposes for roller chains contain conveyors, hoists, and other mechanical equipment.
The horsepower ability of a roller chain is limited by several elements, including pin shock and friction. Whilst analysis into these elements has placed some boundaries on the greatest operating speed of the roller chain, sensible encounter has demonstrated that these programs can be utilized at higher speeds. Appropriate lubrication and cooling can increase the longevity of these chains. In addition, roller chain programs consist of:
Travel and conveyor programs are the two principal employs of roller chains. In the course of driving functions, use and elongation are a natural portion of the procedure. Nevertheless, lubrication plays a vital role in minimizing put on and shock hundreds. For that reason, use is inescapable and special treatment should be taken to make sure correct lubrication. Additionally, lubrication lowers warmth dissipation in the chain.
The resources utilized to make roller chains fluctuate from 1 sort to another. Stainless steel is frequent, but nylon or brass are at times employed. These resources are much less expensive and more resilient than steel or stainless metal. The ideal content for the task relies upon on a range of elements, like expense, environmental situations, and layout horsepower transmission. For example, the pin bushing get in touch with spot is a crucial spot necessitating lubrication. Additionally, some coatings are designed to retard the corrosive consequences of h2o or oil.
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