This TB Woods 4535 taper lock bushing with a torque capacity of 1,200 in-lbs is made of cast iron and is used for mounting a taper lock bushed pulley, sheave, or sprocket on a drive shaft. It is flush mounted for reduced mounting width and has a split taper for a tight clamp to shafts. The bushing is made of cast iron for resistance to wear, galling, and corrosion. It is keyed to the shaft to prevent the shaft from rotating in the bushing, and it is interchangeable with taper lock bushings from various manufacturers. This taper lock bushing is used in automobiles, construction equipment, agricultural machinery, and home appliances, among others.Bushings are cylindrical parts used to mount pulleys, sheaves, sprockets, or other components to drive shafts for the transmission of mechanical power. Most bushings are split and have a tapered outside surface so they will clamp to the shaft when tightened against the tapered bore of the driven component. They are made of durable metals such as cast iron and steel. Bushings are used in automobiles, construction equipment, and machine tools, among others.TB Wood's manufactures bushings, pulleys, couplings, and electronic motor controls. The company, founded in 1857 and headquartered in Chambersburg, PA, meets International Organization for Standardization (ISO) standard 9001:2008.