Oval Wire Tension Spring

When installation space is limited in dynamically stressed applications, the patented oval wire tension spring offers a high-performance and durable solution. The innovative geometry with its oval wire cross-section reduces the critical bending stress at the transition from the spring body to the eyelet by approximately 43%. The result: a significantly more stable eyelet and a service life up to 1000 times longer compared to conventional round wire tension springs.

But it's not just the durability that impresses: The oval wire tension spring combines high elasticity with a compact design while simultaneously improving mechanical properties. It offers significantly less relaxation, higher spring force, and a flat, moment-free characteristic curve – ideal for highly dynamic applications with demanding requirements.

Thanks to a special post-treatment involving shot peening under preload, the spring is absolutely fatigue-resistant and relaxation-free – even under heavy cyclic loading.

The advantages of conventional round wire springs at a glance:

+36% energy storage

-36% installation space

+23% spring constant

+11% spring travel

The oval wire tension spring from HENNLICH combines maximum functionality with a compact design – a future-oriented solution for demanding applications in mechanical engineering, automotive engineering, and anywhere high dynamics and limited installation space meet.