Torsiyon Springs

Torsion springs operate by twisting their ends along their axis. Torsion springs are used in mechanisms where torque needs to be applied. Torsion springs offer resistance to twisting or torque action and are usually close-wound like the extension spring, but with minimum initial tension.

Torsion springs hold mechanisms together; the tightness of the wind is proportional to the energy stored inside of it. Tension must be removed in order for the spring to release this stored energy. The ends of a torsion spring are attached to other components, and when those components rotate around the center of the spring, the spring tries to push them back to their original position.