Compression Springs

S R SPRINGS warehouses the largest inventory of high-grade, straight, cylindrically-shaped compression springs in the world. A compression spring is an open-coil helical spring that offers resistance to a compressive force applied axially. They are usually coiled at a constant diameter, though they can be coiled in other needed forms such as conical, concave (barrel), convex (hourglass), or various combinations of these. Compression springs are used to resist force and/or store energy, depending upon the application. All SR compression springs are fabricated from round wire.

By far the most widely used type of spring, compression springs are designed to oppose compression and return to its uncompressed length when the applied force is removed. The potential applications for compression springs are limited only by the imagination.

1. Hold the base of the spring in one hand, and theverniercalipers in the other hand
2. Place the verniercalipers on the outside of the last coil, measuring the largest dimension. This is called the Outside Diameter (O.D.).
3. Place thevernier calipers on the wire in the center of the spring. This is called the Wire or Material Size. You should also measure the wire toward one end for comparison and accuracy.
4. Place the calipers on the full length of the uncompressed spring. This is called Free Length.
5. Count the total coils, beginning at one end, just next to where the wire has been cut. Be sure you count all coils, including any portion of a coil. (see diagram for example)

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