Pulley & Block
A pulley is a wheel on an axle that is designed to support movement and change the direction of cable. It is used in a variety of ways to lift loads, apply forces and to transmit power. According to the number of sheave pulley, double sheaves pulley and multiple sheaves pulley.
Pulley Wheels are usually offered as single sheave or two sheave for one or 2 ropes, they are used to deflect synthetic rope or steel cable to change its direction of load. Popular uses are for rope access techniques and also for rescue from height applications