Tolerance Rings

These radially sprung steel fasteners are capable of handling direct torque transfer, predictable and repeatable torque slip, axial retention, controlled collapse and radial loading between the mating components, and can help reduce noise and vibration, avoid resonance frequencies and overcome differences in thermal expansion. Depending on the specific requirements of the throttle body application, engineers design the tolerance ring to provide exactly the right combination of properties needed. The Crown Ring is a radial spring fastener with several sprung fingers which whilst deflected give a required load. The height and number of sprung fingers can be altered to cope with specific system tolerances, thermal expansion and support of the motor weight. This system combines the benefit of large diametrical tolerance compensation (in excess of 1mm is possible) with the additional benefit of low assembly forces. Where physical space is restricted further, a miniature ring can be used to secure the motor.