The ends of a torsion spring are fixed to other components, and when the other components rotate about the center of the spring, the spring pulls them back to their original position, generating torque or rotational force. Torsion springs can store and release angular energy or statically fix a device by rotating the arm around the center axis of the spring body. These springs are usually close-fitting, but have a pitch between the coils to reduce friction. They provide resistance to rotation or external forces. Depending on the application requirements, the direction of rotation of the torsion spring is determined by the design of the rotation direction (clockwise or counterclockwise). The coils are either close-fitting or separated to accommodate torsional loads (at right angles to the axis of the spring). The ends of the spring can be wound into hooks or straight torsion arms.

　　1. Torsion springs are used as force measuring elements, such as springs in dynamometers and spring scales. The ratio of the load to the deformation of the spring is called the spring stiffness. The greater the stiffness, the harder the spring.

　　2. Torsion springs store and output energy as power, such as clock springs  .

　　3. Torsion springs control the movement of machinery, such as valve springs in internal combustion engines, control springs in clutches, etc.

　　4. Torsion springs absorb vibration and impact energy, such as buffer springs under cars and train carriages, vibration absorbing springs in couplings, etc.

       Kunshan Sakli Hardware & Plastic Co., Ltd. is a comprehensive precision spring/stamping spring manufacturer integrating R&D, production, sales and service. The company's main products: compression springs, automotive springs,  torsion springs , tension springs, power tool springs, touch springs, stamping springs, antenna springs, constant force springs, 3D printer springs, bicycle springs, etc. Service area: nationwide  http://www.sklspring.com/