SMCC roller chain is one 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 SMCC 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 furnace 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, Taiwan chains exported to Europe, America, Asia and other countries and regions.
| Product Name |
Short-pitch precision roller and bush chains |
| Model |
04C, 06C, 085, 08A, 10A, 12A, 16A, 20A, 24A, 28A, 32A, 36A, 40A, 48A 25, 35, 41, 40, 50~240
06B, 08B, 10B, 12B, 16B, 20B, 24B, 28B, 32B, 40B, 48B, 56B, 64B, 72B Simplex, Duplex, Triplex, Quadruplex |
| Material |
carbon steel, alloy steel, stainless steel, nylon |
| Design style |
Customize and standard |
| Quality approved |
ISO90001, SGS |
| Surface Treatment |
rust-preventative oil |
| Shipping Type |
sea & air |
| Packaging |
carton, wooden case, pallet |
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 two types of links alternating in the bush roller chain. The first type is inner links, having two inner plates held together by two sleeves or bushings upon which rotate two rollers. Inner links alternate with the second type, the outer links, consisting of two 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 one 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.
CHAIN STANDARDS
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 one 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.
Company Files:
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 worldwide 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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1. Reliable Quality Assurance System
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