History of Roller Chains :

Did you know that the idea for roller chains was first conceived in the 16th century?

Leonardo da Vinci sketched a chain that shows a roller bearing mechanism. Although Hans Renold is more commonly credited with inventing the chain in 1880.

Reasons Why The Roller Chain Idea Is So Innovative :

The roller chain design minimizes friction compared to simpler designs, which results in higher efficiency and less wear and tear. The original power transmission chain varieties lacked bushings and rollers, with both the outer and inner plates held by pins that directly contacted the sprocket teeth. However, this configuration of roller chain sprockets showed extremely rapid wear and tear of both the sprocket teeth, and the plates where they spun on the pins.

This problem was partially resolved by the development of roller chain bushings, with the pins holding the outer plates passing through bushings or sleeves that connect the inner plates. This distributes the wear of the chain across a greater area. However, the teeth of the roller chain sprockets still wore much more rapidly than is desirable, due to the sliding friction against the bushings. The addition of rollers that surround the bushing sleeves of the chain, and provide rolling contact with the teeth of the sprockets, results in excellent resistance to wear of both sprockets and chain.

All roller chain is used for the transfer of kinetic energy. Today’s chain consists of a series of short cylindrical rollers and bushing held together by side links. The roller chain is driven by a toothed wheel called a sprocket. This chain -- made from a series of short rollers, cylindrical in shape, held with side links and moved by a sprocket -- is one of the most efficient and reliable means of transmitting mechanical power.