The belt pulley belongs to the hub type parts, generally relatively large in size, and the manufacturing process is generally based on casting and forging. Generally, the larger size is designed by casting method, and the material is generally cast iron (good casting performance), and cast steel is rarely used (steel has poor casting performance); generally smaller size can be designed as forging, and the material is steel. Pulleys are mainly used for long-distance transmission of power, such as small diesel engine power output, agricultural vehicles, tractors, automobiles, mining machinery, machining equipment, textile machinery, packaging machinery, lathes, forging machines, power transmission of some small horsepower motorcycles, power transmission of agricultural machinery, air compressors, reducers, reducers, generators, cotton gins, etc.
