Everything You Should Know About Torsion Springs

Torsion springs, also known as leg springs or spiral springs, are mechanical components utilized in a variety of applications within machinery and plant construction, the automotive and electrical industries, and many other sectors. These flexible spring components are capable of absorbing torque and releasing it upon relaxation. In this comprehensive guide, we will delve into torsion springs, examining their characteristics, manufacturing methods, and applications.

Characteristics of Torsion Springs

Torsion springs are crafted from round, oval, or square-sectioned spring steel wires and possess a cylindrical shape. They exhibit a linear torque characteristic, meaning that torque is proportional to the twist. The force or torque transmission occurs through the legs at the beginning and end of the spring, with various leg shapes and positions possible. The legs can be straight tangential, radially inward or outward, axial, or parallel to the axis.

Torsion springs are manufactured from high-quality spring steel wires selected according to application and requirements. In addition to non-alloyed spring steel wires, stainless spring steels, SiCr-alloyed valve spring wires, copper alloys for excellent electrical properties, nickel alloys for high heat and corrosion resistance, and titanium alloys for demanding applications are used.

Manufacturing of Torsion Springs

Torsion springs are typically manufactured through the cold forming of spring steel wire. There are various methods to achieve the desired shape, such as winding around a mandrel or utilizing automatic spring coiling machines with wire guide pins. Manufacturing tolerances are determined according to DIN 2194, ranging from Grade 1 (minimum tolerance) to Grade 3 (maximum tolerance).

Custom production of torsion springs based on specific customer specifications is also possible. The spring can be manufactured from drawings, samples, or sketches, with the development and support of the spring until it reaches series production. Wire diameters range from 0.20 mm to 4.00 mm, and various wire coatings like zinc plating, ZnAl coating, cold drawing, nickel coating, polished nickel, phosphating, brassing, and silvering can be offered.

Applications of Torsion Springs

Torsion springs find application in a multitude of scenarios. In machinery and plant construction, they are utilized in mechanisms requiring rotational movement, such as door locks, hinges, flaps, or couplings. In the automotive industry, torsion springs are used in steering and suspension systems as well as transmissions. Additionally, in the electrical industry, torsion springs are employed in switches or connectors.

The versatility of torsion springs enables them to be adapted to specific requirements, offering tailored solutions for various industrial applications. Flexibility regarding leg shapes, leg positions, and spring steel wire variants allows for optimal adjustment to desired performance characteristics.

Advantages of Torsion Springs

Torsion springs provide several advantages in industrial applications. Their linear torque characteristic allows precise control of spring force depending on the twist. By storing torsional work, torsion springs can offer energy efficiency and stability in mechanical systems.

The flexible design of torsion springs allows customized adaptation to the requirements of a particular application. Choosing the spring steel wire, leg shapes, leg positions, considering coatings, and surface treatments ensures optimal performance and durability of the spring.

Custom Manufacturing According to Your Specifications

Torsion springs, also known as spiral springs, are versatile mechanical components employed in a variety of industrial applications. Their linear torque characteristic, flexibility in leg shapes and positions, and the ability for individual customization make them an ideal solution for applications requiring precise control of torque. High-quality manufacturing and the use of superior spring steel wires ensure high performance and durability of torsion springs.

If you are seeking a reliable partner for the production of torsion springs tailored to your specific requirements, feel free to contact us. We offer customized solutions for various industries and applications and assist in the development and realization of your spring projects.

We closely collaborate with you in the production of torsion springs. The torsion and leg springs are manufactured according to your specifications from drawings, samples, or sketches. We oversee the development of the spring until it reaches series production.

We produce a range of torsion and leg springs in wire diameters from 0.20 to 4.00 mm, with and without torque testing.

Wire Coatings

  • Zinc Plated
  • ZnAl Coated
  • Cold Drawn
  • Nickel Coated
  • Polished Nickel
  • Phosphated
  • Brassed
  • Silvered

All technical springs are manufactured upon request, even in smaller batch sizes. Special packaging is offered for all products. We have our own tooling department and, as your development partner, we also provide individual calculations.

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