What is a torsion spring

What is a torsion spring

Torsion springs are a type of flat spiral coil or helical shaped spring used in applying a torque or store rotational energy. Unlike other springs such as compression or extension springs that require a linear force to push or a pull, torsion springs store and release rotational energy via torque as a measure of force. Torque causes the spring to rotate on its axis when applying or resisting a load. 

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Since its establishment, the company has been taking the road of professional development, and has established long-term cooperative relations with well-known domestic auto parts manufacturers. High trust!


We have a patent certificate for springs, and have the ability to develop products together with customers. Some products can provide free samples to customers.


We have 30 years of manufacturing and R&D experience. It has passed the IATF 16969 automotive quality management system, and has more than 200 sets of professional spring equipment, which can guarantee the quality.

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about Heli Spring

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Wenzhou Heli Spring Manufacturing Co., Ltd. was founded in 1992. It is a high-quality spring manufacturing enterprise integrating design, production, sales and service. The current products include: compression springs, torsion springs, extension springs, auto parts springs, wire forming springs and spring sheets, etc.

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What is the difference between torsion spring and extension spring?

Extension springs fully expand and contract when operating an overhead door. Torsion springs turn. Torsion springs are sturdier and last longer. Torsion springs do cost more, but generally last between 15,000 and 20,000 cycles, whereas extension springs last up to 10,000 cycles.

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Frequently Asked Question

Do you have any question?

Torsion springs are helical springs that exert a torque or rotary force. 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.

Torsion springs tend to be stronger and more durable than extension springs. And though they are more expensive, they last longer, between 15,000 and 20,000 cycles as opposed to 10,000 cycles with extension springs. They also offer greater balance and show more control when moving, not jerking as the door moves.

The reason torsion springs are quieter is because they are located on the wall near the door instead of over the tracks. This leads to less noise transmission when someone opens or closes the door. If you are concerned about accidents, the torsion spring is the way to go.

The manufacturing process of torsion springs usually includes the following steps: First, the appropriate material is selected and processed according to the needs, such as drawing, cutting, polishing, etc. Secondly, according to the design requirements and size requirements, bending and winding are carried out using a torsion spring machine or by hand, so as to form the desired shape and elasticity. Finally, torsion springs are heat treated or surface treated to improve their strength and corrosion resistance, and testing and quality control are carried out.

Selecting the appropriate torsion spring should be selected according to the specific application scenarios and requirements. First, factors such as the required torsional force, elastic deformation and working environment need to be determined. Secondly, the production and cost of torsion springs need to be considered according to factors such as the selected material, size and process. Finally, experimental verification and quality testing are required to ensure that the selected torsion spring meets the requirements.

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