A compression spring resists compressive forces. They are usually coiled in a constant diameter. But other forms are available such as conical, tapered, concave, convex, or various combinations - depending on the application. End types are not usually as varied as with extension springs.
The wire used is typically round. However, compression springs can also be made from square, rectangular, or special-section wire.
Compression springs should be stress-relieved to remove residual bending caused by the coiling operation. Even so, operational stress can cause some springs to take on a permanent set resulting in a configuration outside of the original design. As a result, performance is hindered.
In designing a compression spring, take into account the limits of the space into which the spring must fit. These limits will determine the solid height, as well as inside and outside spring diameters. It is important to consider how the space limitations will impact component assembly and spring performance.
Various packaging is available for easy production line integration.
Compression spring design types are limited only by your imagination.
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