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Industry News - Technical Article
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Spring Solid Height
posted May 12, 2008
The Solid Height of a compression spring is the height of the spring when all of the coils are brought together (stacked) by compression (load). The following formulas are used to calculate Solid Height for different end configurations:
 |
Open, Not Ground |
Open & Ground |
Closed Only |
Closed & Ground |
| Solid Height |
(TC + 1)d |
TCd |
(TC + 1)d |
TCd |
* TC = Total Coils, d = Wire Diameter
Solid Height should only be specified when it is important to the function of the spring. It should be specified as a maximum allowing the spring manufacturer to adjust as necessary while considering other requirements of the design. It is also good practice not to design the Solid Height such that it is used as a stop or too close to the final load height.
Other considerations when calculating Solid Height include finish and other manufacturing tolerances.
As an added service, Newcomb Spring Corp offers a special technical guide CD that includes an animated glossary showing solid height as well as other animated characteristics of springs. This may be obtained by visiting our Quick Contact page (please write that you are requesting a CD in the Notes field).
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