Pulley

About

A pulley is a wheel mounted on an axle or shaft that enables a taut cable or belt passing over it to move and change direction, or to transfer power between itself and a shaft. The wheel may feature a groove or multiple grooves between flanges around its circumference, which serve to locate the cable or belt in place. Pulley systems can be driven by various elements including a rope, cable, belt, or chain, depending on the specific application and design requirements.