cogs and chains Roller chain sprockets, sometimes called single-strand sprockets, possess a series of the teeth around a central bore and so are used in mixture with roller chains to move conveyors and other commercial machinery. Fixed bore sprockets are made to fit a particular shaft size you need to include a keyway and setscrew therefore they’re prepared to install. Simple bore sprockets are produced without a keyway or set screw. Keyways or established screws could be machined to the exact size necessary by the prevailing shaft and application. Bushed bores have more clamping region around the shaft to supply a secure suit for high torque or high-power applications when the shaft is at risk of slipping, such as for example paper milling and agricultural machinery.