Extension Springs
 We have the production facilities to manufacture a large range of
extension springs, with either cross over or machine loops. We can
also supply with swivel hooks or special inserts.
The following information may be useful when ordering:
| SYMBOLS and TERMS USED |
 |
| d |
Wire diameter |
| Do |
Outside diameter |
| Di |
Inside diameter |
| D |
Mean diameter (cannot be measured) |
| L |
Free Length inside loops |
| L1 |
Load Length |
| F1 |
Load at L1 |
| S |
Spring rate |
| Fo |
Initial tension |
| N |
Total Coils |
 Packing:
Components can be supplied in a variety of packaging or to customers specific
requirements.
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