Constant-force springs as torque generators
* Up to 100 revolutions
* Service life of up to 50,000 load cycles, typical applications require 6,000 - 8,000 cycles
* Curve can be influenced for specific purposes
* Ascending (progressive gradiant)
* Constant (medium gradiant)
* Descending (negative gradient)
* Spring ends: Hooks, T-ends, hole shapes, separating cut
* Small to medium torque range, minimum friction losses
* 2-axis system with supply and working rolls

Constant-force springs as tension and compression springs
* Up to 100 revolutions
* Service life of up to 50,000 load cycles, typical applications require 6,000 - 8,000 cycles
* Long spring deflections of up to 5m
* Constant MIGRA spring force, PROGRA and NEGRA also possible
* Spring ends: hole shapes