Tapered non-flanged split bushings utilize screws to tighten on the shaft, providing excellent clamping force. Used on sprockets, sheaves and pulleys to increase clamping force over standard bored to size product that only utilizes a keyway and setscrew to lock onto the shaft. Their small size and the convenience and advantages of tapered construction make them of great value on many devices. Timken Belts Belt Bushing, 3 in Bore, Metal