Roller chain sprockets, sometimes called single-strand sprockets, have a series of teeth around a central bore and so are used in combination with roller chains to go conveyors and other commercial machinery. Fixed bore sprockets are designed to fit a particular shaft size and include a keyway and setscrew therefore they’re ready to install. Plain bore sprockets are produced without a keyway or arranged screw. Keyways or arranged screws can be machined to the precise size necessary by the existing shaft and cogs and chains program. 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 paper milling and agricultural machinery.