Shop Star Hot Rolled Pulleys

While sheaves may be a relatively small piece of hardware, they play a crucial part in mechanical engineering and lifting equipment. They are used in tandem with a rope, belt, or cable to lift items with a crane. Essentially, a sheave is a wheel with an open groove that a rope or cable fits around so it can rotate around the exterior. One end of the cable is attached to an item that needs to be moved, while the other is attached to a fixed object, like the base of a crane. The cable smoothly moves over the wheel of the sheave as it is wound up on the fixed object, lifting the other object into the air.