Chain drive is the most common power transmission device used in machines of industry and transportation. Without it we would still be using gears and shafts.
Hans Renold Limited was formed as a private limited company in 1903. It merged with The Coventry Chain Company Limited and was registered as a public limited company named Renold and Coventry Chain Company Limited in 1930. It was renamed Renold Ltd. in 1967, and later became Renold PLC. Nowadays the company still bears his name.
Renolds still produces quality motorcycle drive chain in half a dozen countries.
Chain Sizes are normally called out by dimensions WIDTH X PITCH IE: 3/8 x 5/8 = 530
Other sizes of chain you might encounter: