Simplex Roller Chain British Standard 08B

The "Simplex" designation refers to a single strand chain, which means it has only one row of rollers and plates. This type of chain is often used in applications that require moderate load capacity and speed, such as conveyors, power transmission systems, and machinery.

The "08B" designation represents the chain's pitch size. In this case, the pitch size is 0.5 inches or 12.7 millimeters. The chain's pitch is the distance between the centers of two adjacent rollers.

The Simplex Roller Chain British Standard 08B is typically made of high-quality steel and undergoes heat treatment to enhance its strength and durability. It features precision-designed roller and link plates that allow smooth and efficient power transmission.

Overall, Simplex Roller Chain British Standard 08B is a reliable and cost-effective solution for a wide range of industrial applications.

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.

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