Split taper bushings are used to carry torque and mount pulleys, sprockets, and sheaves on shafts. They have a double-split barrel to provide flexibility and a strong hold on shafts. The barrel is keyed to the shaft to prevent rotation. Split taper bushings are also flanged to reduce drive vibration and provide a concentric bore. Unlike other bushings, they do not require a perfectly matched bored component and can accommodate shaft size changes without manual adjustment or replacement.