The compression spring is a red coil spring that can withstand pressure. The material used in this spring is generally circular in the cross section. Of course, there are also rectangular and multi-stranded steel coils for rolling. This kind of spring is generally of equal pitch, compression spring specifications: cylindrical, conical, convex and concave, and a small amount of non-circular, so there is a certain gap between the compression spring ring and the ring, Then the spring can contract and deform when subjected to an external load, which can store deformation energy.
As a general rule, the compression spring index should be above 3 and less than 20. Compression Springs designed outside these limits increase cost and require more tolerance. Springs with small indexes increase tooling wear and are more likely to require additional processing steps to ensure adequate life.
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