Single and Double Torsion Spring Design Resources

We manufacture custom torsion springs from all types of material. The most common material types for torsion springs are music wire, stainless steel (type 302, type 316 and type 17-7 PH), and hard-drawn wire. Our diverse selection of springs and wire forms, coupled with our industry expertise, means you can count on us to design and manufacture a torsion spring to match your exacting needs.

Common torsion spring materials include:

• High-carbon spring wire
• Carbon and alloy wire
• Hard-drawn wire
• Alloy steel wire
• Stainless steel wire
• Non-ferrous alloy wire
• And many more!

There are many unique configurations for the ends and legs on a torsion spring. Some of the more common end configurations for helical torsion springs are shown below in Figure 2 from the Spring Manufacturing Institute’s Handbook of Spring Design.

Figure 2 from the Spring Manufacturing Institute’s Handbook of Spring Design

A double torsion spring should be coiled out from the center rather than in from the ends. This design allows both ends of the double spring to work together and provides unique torque for many different types of applications. Refer to Figure 3 for the recommended way to design a double torsion spring.

Figure 3 recommended double torsion spring design diagram