What is a double torsion spring?
A double torsion spring is a specialised spring design consisting of two torsion springs wound in opposite directions and connected by a central bridge. This configuration allows the spring to deliver force in both directions or to create a balanced torsional movement. As a result, double torsion springs are particularly suitable for applications requiring symmetry, bidirectional rotation, or increased torque.
They are commonly used in mechanical systems that require controlled return movement, dual-sided tension, or self-closing functions, ranging from valves and lids to control mechanisms and precision equipment.
Applications of double torsion springs
Our double torsion springs are used in the following sectors and systems, among others:
- Mechanical engineering: Spring-loaded shafts, valve systems with dual opening directions, and return mechanisms.
- Medical: Surgical equipment, dosing mechanisms, and systems requiring precise rotational loads.
- Defence & Aerospace: suspension systems for armoured vehicles, automatic weapon systems, and moving components in vehicles and equipment.
- Lighting technology: Durable and stable solutions for systems with adjustable or rotational components on both sides.
Why choose a double torsion spring?
Double torsion springs combine strength, precision, and symmetry in a single compact spring solution. By incorporating two active torsion zones, they deliver increased torque in both directions, making them especially suitable for double-acting applications. The symmetrical operation ensures balanced force distribution, which is essential in systems where equilibrium is critical.
Thanks to their efficient design, double torsion springs provide high performance even in applications with limited installation space. In addition, these springs are fully customisable: from wire diameter, number of coils, and winding direction to leg shape and material selection. The spring rate, which determines how linearly the spring responds to angular deflection, can also be precisely matched to your application.
Benefits of our double torsion springs
- Custom manufacturing: Designed specifically for your application, from single prototypes to series production.
- High-quality materials: Stainless steel, spring steel, or special alloys, selected to match environmental and load requirements.
- Technical expertise: Support from concept to final product, including calculation and prototyping.
- Fast delivery: Enabled by modern production methods and efficient processes.
- Reliable performance: Precise torsional action, high fatigue resistance, and long service life.
Order your double torsion springs from De Spiral
Our specialists are ready to advise you on the correct shape, direction of rotation, spring characteristics and mounting options. Contact us for a free quote or technical advice.
Looking for a double torsion spring that suits your application?
Contact us at +31 (0) 74 — 291 45 08
