It is a spring designed to resist a stretching force. Its coils are usually closed together at rest and end in hooks to attach to other components.
They are used to return a part to its original position after being displaced. They are responsible for “pulling” mechanisms.
When stretched, the spring exerts an opposing force to bring its ends back together. This force depends on its dimensions and the initial tension with which it was manufactured.
In addition to its physical dimensions, it is crucial to calculate the initial tension, which is the minimum force required for the coils to begin separating.
Mainly carbon steel and stainless steel. In special cases, high-temperature resistant alloys are used.
It is determined by the material’s elastic limit and, very importantly, by the strength of the hooks, which are usually the critical point.
Define the total length including hooks, the wire diameter and, above all, how far the spring must stretch to perform its function.
An extension spring requires hooks at the ends to be “pulled”, whereas a compression spring usually has flat ends to be “pushed”.
Yes. We can customise the type of hook (German, English, swivel, etc.) and the specific return force.
Mainly in garage doors, bed bases, trampolines, braking systems and various industrial machinery.
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