SUS301 Stainless Steel Flat Wire Constant Force Spring For Cable Retractors

How do you select constant force springs?

To choose or manufacture the correct spring, you must know the approximate initial force or load that

the springs need to overcome to reach the “constant force” stage (i.e. the flat section of the blue line on the graph above).

The higher the initial load, the greater the diameter spring you will need.

What are constant forces?

A constant force is any force acting on an object at an unchanging rate.

Which force is the constant force?

The weight remains unaffected by the variation in time, i.e., it is constant. In other words,

gravity acts on an object irrespective of the change in time,

which is why it is listed under the category of constant forces.