For relatively small displacements (up to about 75mm) the variable spring support is recommended.
For displacements over 75mm, the constant spring support is recommended. Use of a constant effort support may also be appropriate when only a small change in load is accepted (e.g. close to sensitive equipment) or where space considerations may prevent the use of a variable effort support.
Find more details on CPA’s range of variable and constant effort spring supports below.