Custom extension spring

Extension springs

The tension spring is a flexible and reliable spring that absorbs and returns forces under tensile loads. This makes it ideal for a wide range of applications, from fine mechanical systems to heavy industrial installations.

About our extension springs

As the name suggests, tension springs are loaded in tension. Under the influence of force, the spring elongates and returns to its original position as soon as the force is removed. This makes tension springs ideal for applications where tension and durable performance are key.

To make the spring functional, hooks or eyes are attached to the ends. These ensure flexibility and safety, making the tension spring easy to install in a wide range of systems, from small-scale mechanisms to robust industrial applications.

Applications of extension springs

From offshore to the agricultural sector: Tension springs are indispensable in sectors where reliability and precision are crucial. In mechanical engineering, they ensure controlled movements in automation lines and safety mechanisms. In the offshore and maritime sectors, they withstand harsh conditions such as corrosion and pressure, and are essential for valves and seals. In shut-off valves and pumps, tension springs guarantee constant force and accurate repetition in sealing systems. In agricultural engineering, they increase the robustness of agricultural machinery by absorbing shocks and keeping parts stable.

De Spiraal provides customised solutions that continue to perform, even in the harshest environments. For anyone wondering which tension spring do I need?, De Spiraal offers clear explanations and customised solutions that continue to perform, even in the harshest environments.

Download the product sheet here
Verenfabriek de Spiral BV

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Stainless steel extension spring for corrosion-resistant applications
Request extension springs
Trekveer met cilindrischExtension spring with Extension spring with cylindrical coil for uniform performance
Tailored extension spring

Frequently asked questions

What is the delivery time of tension springs?

For standard extension springs, the delivery time is usually 2 to 5 business days. Custom tension springs are usually delivered within 2 to 4 weeks, depending on complexity and numbers. Express delivery and prototyping are also possible in consultation.

What is a tension spring and when do you use it?

A tension spring is a coil spring that exerts force when stretched. Extension springs are used to pull parts together or to build up tension during extension, for example in ports, valves, switches and sports equipment.

What is the maximum force or extension of a tension spring?

The maximum strength and extension depend on the material, wire thickness and construction. We are happy to advise you on the optimal ratio between resilience, choice of materials and longevity for your application.

Are tension springs resistant to corrosion or heat?

Yes, we supply tension springs in corrosion-resistant materials such as stainless steel and heat-resistant alloys such as Inconel. Finishes such as galvanizing or passivating are also possible for extra protection.

Can you supply tension springs with specific hook shapes?

Yes, we design and produce custom tension springs with various hook ends, such as German eye, English eye, threaded eyes, hinged hooks or special end structures on request.

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