Crane Parts: Pulley Group for crane
A pulley is a set of simple tool consisted of one or more wheels over which a rope can be looped for the purpose of labor saving and movement direction changing. Pulleys can be divided into crown block/ fixed pulley and fall block / movable pulley based on functions of pulleys while based on materials, pulley blocks can be classified into cast iron pulley, cast steel pulley, nylon pulley, and aluminum pulleys, etc.