Structure analysis of torsion spring

The structure analysis of torsion spring is as follows
For use on a supported spindle or shank. Spindle dimensions can allow about 10% clearance in the listed deviations. If the deviation is large, the shank size should be reduced
In order to make the torsion spring function well, the space in the assembly (minimum axial space) must be sufficient. The minimum axial space cannot refer to the length of the coil. The torsion spring should be used in the direction of winding the coil. Because of the residual stress, the maximum load in the loosening direction is low
The torque values listed are the maximum recommended for torsion springs. These values can be increased by about 20% under static conditions with only a little adjustment