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.