Produces torque through angular deflection for shafts, clamps and door controls. Hand, viewing direction, free angle and installed preload must be explicit.
Produces torque through angular deflection for shafts, clamps and door controls. Hand, viewing direction, free angle and installed preload must be explicit.
Use these values for early selection. Final dimensions, tolerances and loads are confirmed by engineering review and approved samples.
Double and single torsion springs, custom angles and coils, for electronics and automotive
Handles, latches, doors and furniture hinges.
Clips, tools, brackets and hold-down mechanisms.
Switches, covers, seats and small controls.
Body diameter changes as a torsion spring works. Allow space for movement, tolerance and friction at the mandrel and housing.
Moment arm directly affects measured torque, so drawing and fixture must use the same grip point and angular datum.
Design BasicsSeparating viewing direction, loading direction and free angle prevents reversed parts and angle errors during sampling.
Design BasicsA low spring index makes forming and inside-coil stress more demanding, while a high index increases instability and handling risk.
Design BasicsTwo load points constrain both working force and rate, reducing ambiguity caused by free-length or preload variation.
Hand needs a viewing direction and load arrow. The word “left” alone can be interpreted differently from another view.
Yes, but preload changes starting torque and remaining travel and must be included in design and life validation.