Torsion Spring Overview

Torsion springs are coil springs. The ends of torsion springs are fixed to other components, and as other components rotate about the center of the spring, the spring pulls them back to their original position, creating a torque or rotational force. Torsion springs can store and release angular energy or statically fix a device by rotating a lever around the central axis of the spring body. These springs are usually tight body, however, there is a pitch between the coils to reduce friction. They create resistance to rotation or rotational external forces. Depending on the application requirements, design the direction of rotation of the torsion spring (clockwise or counter-clockwise) to determine the direction of the spring. The turns are either tightly wound or spaced apart to accommodate torsional loads (at right angles to the spring axis). The end of the spring can be wound as a hook or straight torsion arm.