Torsion Springs – or helical torsion springs – is the most common spring type when torque is desired together with a rotating movement. The active part is a helical coil of spring wire and the ends (legs) are designed to allow for the introduction of the torque and fit with the abutments of the application.
Many applications require two similar torsion springs, but with one right-hand coiled and one left-hand coiled. In some cases, these two springs can be combined into a double torsion spring, which has one right and one left-hand coiled spring body connected to each other.
Material grades are the same as for compression springs, covering the whole range from normal spring steel to nickel alloys, titanium alloys and copper alloys. We cold coil torsion springs up to wire diameter 18 mm and hot coil for thicker material. Material with a square cross section is sometimes required to cope with the requirements.
The most common basic types of torsion and leg springs used by Velleuer have either one or two winding bodies arranged symmetrically to each other. The legs can be shaped differently, depending on the intended purpose.
The available installation space, the spring retainer, the torsion to be stored and the connection to the machine component to be rotated are the defining criteria when designing a leg spring.
Production Wire forming machines
Spring coiling machines followed by manual bending
Special materials after individual consultation.
Dimensions Wire diameter 0.15 mm and upwards. Maximum dimension depending on leg shape.
Customised versions and bespoke dimensions are possible after individual consultation.
John While Springs (S) Pte Ltd
1, Kallang Sector #03-02