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Industry News - Technical Article
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Spring Rate - What Is It & How Do I Determine Spring Rate?
posted May 19, 2008
Spring rate is the change in load per unit of deflection and may be determined using the following procedure:
1. Deflect* the spring approximated 20% of the available deflection and measure the load (P1) and the height (L1).
2. Deflect* the spring approximately 80% of the available deflection and measure the load (P2) and the height (L2).
3. Calculate the rate (lbs/inch) or (N/mm) by using the following formula:
where R = Rate, P = Load, L = Load Length
*To deflect a spring one would apply or remove an external load, causing the spring ends/arms to move.
As an added service, Newcomb Spring Corp offers a special technical guide CD that includes an animated glossary showing rate as well as other animated characteristics of springs. To request one of our technical cds, visit our Quick Contact page (please write that you are requesting a CD in the Notes field).
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