Tension springs are all about pulling action, reacting to a stretching force by trying to hold itself together via tension until the force is no longer being applied.
Tension Springs operate when a pulling force is applied to them, endeavouring to retain its original state, thus creating tension. In its resting state, all the coils of a tension spring will be touching, and will return to this state once the force being applied is slackened or wholly ceased. In this way, tension springs can be considered to perform a diametrically opposed function to compression springs.
Under a state of equilibrium a tension spring operates under all forces at value 0. When the sum of all forces is not 0 (when a third-party impulse is imparted) then the spring is subject to Newton Third's Law, acting and reacting at the same time. Owing to Hooke’s Law the spring will only operate up to the limit of its elasticity, and therefore it is important that tension springs are manufactured to withstand the necessary amounts of tension for the task, as opposed to a generalist function. As the majority of tension springs are manufactured with looped or hooked ends, they can only feasibly operate up to 60% of its permitted tension. At European Springs, the manufacture of loose looped, tapered ends allows our tension springs to operate at maximum capacity.
Tension Springs can often be found in garage doors and trampolines, as well as a wide range of other products. They are predominantly made of steel or stainless steel, due to the increased elasticity of steel over other metals, such as copper, and the greater values of pressure and pounds per square inch beyond aluminium. These features mean that a steel spring can bear larger tension before reaching its elasticity limit, recover its original shape quicker, and requires roughly three times less exertion to produce the same force as an equal aluminium spring.
For more information on our tension springs, or for further details on any of products, contact us at European Springs today and we will be more than happy to help you.