A helical compression spring that stores mechanical energy when compressed and releases it when the load is removed, used in various industrial applications.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| End Types | Closed and ground, closed, open, double closed | |
| Free Length | 10-500 mm | |
| Spring Rate | 0.1-100 N/mm | |
| Active Coils | Total coils minus 2 (for closed ends) | |
| Solid Height | Wire diameter × (total coils + 1) | |
| Wire Diameter | 0.5-20 mm | |
| Outer Diameter | 3-200 mm |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A calibrated spring sub-assembly that sets the opening pressure of a sanitary pressure relief valve.
A mechanical component that uses spring force to return an actuator to its default position after actuation.
A mechanical assembly that provides suspension and damping functions within a drive system
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Compression springs are designed to operate with a compressive load and get shorter when loaded, while extension springs are designed to resist stretching and get longer when loaded. Compression springs typically have closed or ground ends, while extension springs have hooks or loops at the ends.
The spring rate (k) is calculated using the formula: k = (G × d⁴) / (8 × D³ × N), where G is the modulus of rigidity of the material, d is the wire diameter, D is the mean coil diameter, and N is the number of active coils.
Common failure modes include fatigue failure due to cyclic loading, corrosion (especially in harsh environments), over-compression beyond solid height, improper installation causing buckling, and material defects. Proper design considering working stress, fatigue life, and environmental factors can prevent most failures.
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