China Custom Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture challenge roller chain

Product Description

A Series Short pitch Precision Simplex Roller Chains & Bush Chains

ISO/ANSI/ DIN
Chain No.
China
Chain No.
Pitch
P
mm
Roller diameter

d1max
mm

Width between inner plates
b1min
mm
Pin diameter

d2max
mm

Pin length Inner plate depth
h2max
mm
 Plate  thickness

Tmax
 mm

Tensile strength

Qmin
kN/lbf

Average tensile strength
Q0
kN
Weight per meter
q  
 kg/m
Lmax
mm
Lcmax
mm
15 *03C 4.7625 2.48 2.38 1.62 6.10 6.90 4.30 0.60 1.80/409 2.0 0.08

*Bush chain:d1 in the table indicates the external diameter of the bush

ROLLER CHAIN

Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.

CONSTRUCTION OF THE CHAIN

Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.

The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.

LUBRICATION

Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]

There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.

Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.

VARIANTS DESIGN

Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.

Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.

Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.

USE

An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.

Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.

WEAR

 

The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).

With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.

The lengthening due to wear of a chain is calculated by the following formula:

M = the length of a number of links measured

S = the number of links measured

P = Pitch

In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.

CHAIN STRENGTH

The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.

The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.

CHAIN STHangZhouRDS

Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.

ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Standard Sizes
Size Pitch Maximum Roller Diameter Minimum Ultimate Tensile Strength Measuring Load
25 0.250 in (6.35 mm) 0.130 in (3.30 mm) 780 lb (350 kg) 18 lb (8.2 kg)
35 0.375 in (9.53 mm) 0.200 in (5.08 mm) 1,760 lb (800 kg) 18 lb (8.2 kg)
41 0.500 in (12.70 mm) 0.306 in (7.77 mm) 1,500 lb (680 kg) 18 lb (8.2 kg)
40 0.500 in (12.70 mm) 0.312 in (7.92 mm) 3,125 lb (1,417 kg) 31 lb (14 kg)
50 0.625 in (15.88 mm) 0.400 in (10.16 mm) 4,880 lb (2,210 kg) 49 lb (22 kg)
60 0.750 in (19.05 mm) 0.469 in (11.91 mm) 7,030 lb (3,190 kg) 70 lb (32 kg)
80 1.000 in (25.40 mm) 0.625 in (15.88 mm) 12,500 lb (5,700 kg) 125 lb (57 kg)
100 1.250 in (31.75 mm) 0.750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
120 1.500 in (38.10 mm) 0.875 in (22.23 mm) 28,125 lb (12,757 kg) 281 lb (127 kg)
140 1.750 in (44.45 mm) 1.000 in (25.40 mm) 38,280 lb (17,360 kg) 383 lb (174 kg)
160 2.000 in (50.80 mm) 1.125 in (28.58 mm) 50,000 lb (23,000 kg) 500 lb (230 kg)
180 2.250 in (57.15 mm) 1.460 in (37.08 mm) 63,280 lb (28,700 kg) 633 lb (287 kg)
200 2.500 in (63.50 mm) 1.562 in (39.67 mm) 78,175 lb (35,460 kg) 781 lb (354 kg)
240 3.000 in (76.20 mm) 1.875 in (47.63 mm) 112,500 lb (51,000 kg) 1,000 lb (450 kg

For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):

Pitch (inches) Pitch expressed
in eighths
ANSI standard
chain number
Width (inches)
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

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.

 

 

 

 

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Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car
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chain

What is a roller chain?

What is a roller chain? A roller chain is a transmission system that transmits power from one shaft to another. Internal lubricant helps chains last longer and are interchangeable. Chains are usually made of carbon or alloy steel. Stainless steel is sometimes used in food processing machinery or in environments where lubrication is problematic. Brass and nylon are also sometimes used. If you need to slow down the machine, nylon chains can be used.

Roller chains are used to transmit power from one shaft to another

Generally speaking, the life of a roller chain is limited by three main factors: wear, corrosion, and fatigue. These can be minimized by following some simple guidelines. For optimum performance, the roller chain must be lubricated. Proper lubrication reduces friction and extends product life. Remember that corrosion and wind resistance can adversely affect lubrication, so protect the product properly.
A chain is a mechanical device used to transmit power from one shaft to another. The chain consists of a series of steel plates called bushings. Bushings are attached to the roller chain by pins or bushings. The block and bushing are held together by pins or bushings C riveted to the outer link D. The chain is also attached to the sprocket and bucket by pins or hooks. Chain pitch is measured between hinge centers, usually denoted p.
There are three types of chains: single-strand standard series, multi-strand standard series, and silent chain. Single strand chains are the most common type and cover a wide range of drive loads. Multi-strand chains provide greater power capacity without increasing chain pitch or line speed. An inverted tooth chain is a variant of a single-strand chain that eliminates the noise caused by pitch-related friction.
The inner and outer plates of the roller chain drive are made of steel. The rollers are positioned evenly between the chain links and are fastened to the sprockets. In addition, the rollers can rotate freely within the bushing. The chain links are arc-shaped and mesh with the sprocket teeth to transmit power through the chain.
Chain drives are another common way of transmitting mechanical power. These are the simplest forms of power transmission and are used on conveyor belts and other low-speed applications. The chain wraps around the sprocket and passes through the sprocket whose teeth mesh with the links. This mechanism transfers mechanical power from one shaft to another, increasing speed.

They are interchangeable

There are many different types of roller chains, but most are made of steel. Although they have their own advantages and features, they are generally interchangeable. You can buy different kinds of roller chains from domestic and foreign manufacturers, and you can choose the one that best suits your needs. Bearing Services can help you choose the right bearing for your application needs and budget. Here are some important things to consider before buying a roller chain. Here are some tips to make it easier for you to buy the right type of chain.
When choosing the right roller chain, be sure to consult the available size charts. Depends on how much chain you need to move the load you need to move. Remember that roller chains can be manufactured to fit a variety of machines and must meet your specific needs. Also, the chain should be long enough for the machine you are using. Make sure to buy a chain made of high-quality materials.
Double pitch roller chains have a flat top surface and are used in many different conveying applications. Double-pitch load-carrying roller chains, also known as oversized roller double-pitch chains, have rollers that extend beyond the sidebars to carry products. Double pitch drive series roller chains are used in elevators, long conveyor drives, agricultural machinery, and commercial sprinkler systems.
The tensile strength of a roller chain is a key factor to consider before purchasing a chain. The tensile strength of a chain is a function of the maximum force the chain can withstand before breaking. The three different types of tensile strength represent the force a chain can withstand without breaking. Each chain also has different strengths that can determine the type of chain you need.
The outer and inner links of the roller chain are designed for bearings. This allows the chain to be paired or unpaired with its internal links. The outer link has a pin, and the inner and outer pins are press-fit into the connecting plate. These links are usually made of steel and have a tensile strength of about 20 times their weight. The fatigue strength of two-pitch offset links is the same as that of the base chain.

They reduce wear with internal lubricants

In a roller chain, the pins and bushings rotate inside the chain without lubricant on the outside. They are in contact with the teeth of the sprocket and can easily wear out if not lubricated. The plates that connect the links and pivot about the pins can also rub against each other and cause wear. This is where lubricants come in handy. Without lubricant, the bare metal of the plate and bushing would rub against each other.
The lubricant should have the appropriate viscosity to penetrate critical internal surfaces and form an effective oil film. Recommended viscosities are listed in Table 1. Lubricants must be clean and non-corrosive. For roller chains, a good quality non-clean petroleum base oil is sufficient. While defoamers are not required, other additives such as antioxidants and extreme pressure inhibitors may be useful. However, impure oils should be avoided due to the risk of damage.
The shape of the spray head 10 overlaps with a conventional drive chain 12. The drive chain includes a plurality of rollers 24 and roller link plates 26. Each roller includes a roller pin 29 and is connected to a pair of pin link plates 28. Most drive chains have critical wear points on the sides of the roller pins 29. The shape of the spray head 10 prevents overspray onto the central portion of the roller.
In addition to preventing wear, these chains have unique specifications. Manufacturer CZPT requires raw material suppliers to certify that their products meet standards set by the American Society of Mechanical Engineers (ASME). CZPTs do not accept uncertified raw materials. For safety, the machine must be turned off before attempting to measure the chain. After the system is shut down, the measurement process should be completed in accordance with safety procedures.
General spray oil has lubricating properties, but is not as good as other types of chain lubricants. These are typically used for rust protection and include antioxidant chemicals. Generally, they are inexpensive and widely available in retail stores. However, they have the disadvantage of being very penetrating and difficult to apply evenly. Oil cannot stay on the chain as it spins, which can accelerate wear and corrosion.
chain

They can be used to speed up or slow down machines

Typically, roller chains are chains used to move mechanical system components. Unlike belts, roller chains can be used to speed up or slow down a machine. The main difference between belts and roller chains is the lubrication process. Belts use lubrication to help them move at a constant speed, but should not exceed the critical speed of the roller chain. This critical speed is not easy to determine and lubrication is critical to its life.
A roller chain is a chain consisting of a steel bushing that holds the inner plate A and pins C together. Pin C is riveted to outer link D, while roller R surrounds each bushing B. The teeth of the sprocket are supported on the rollers. They spin freely on pins and bushings, reducing friction.
The chains can be single-stranded, double-stranded, or multi-stranded. The rated power capacity of the single strand chain can meet various drive load requirements. Multi-strand chains provide higher power capacity without increasing chain pitch or line speed. The silent chain, also known as the inverted tooth chain, consists of a series of toothed chainplates. The pins of the chain are pressed into the wide ends of the sidebars and outer links.
Although roller chains are a common mechanical component, they can fail under certain conditions. The most common cause of excessive wear is wrong to load sizing. Each manufacturer sets a maximum workload for its product. A chain that is too small for the load carried will not run smoothly and may cause premature failure. Chains can also fail due to rust or improper maintenance.
There are many ways to choose the correct size roller chain. The easiest way to choose the right one is to use a horsepower chart to determine the speed of the motor. RPM will determine the size of the chain and the number of teeth on the drive sprocket. Conveyor chains offer a variety of options to move products horizontally or vertically, even around bend radii.

China Custom Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture   challenge roller chainChina Custom Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture   challenge roller chain
editor by CX 2023-07-13