Roller chain sprockets, sometimes called single-strand sprockets, possess a series of teeth around a central bore and are used in combination with roller chains to move conveyors and other commercial machinery. Fixed bore sprockets are made to fit a specific shaft size you need to include a cogs and chains keyway and setscrew so they’re prepared to install. Basic bore sprockets are produced with out a keyway or set screw. Keyways or set screws could be machined to the precise size necessary by the existing shaft and app. Bushed bores have significantly more clamping region around the shaft to provide a secure match for high torque or high-power applications when the shaft reaches risk of slipping, such as paper milling and agricultural machinery.