Rencol tolerance rings safely retain sintered magnets

Simple in concept and easy to use, tolerance rings are convenient and cost-effective for an impressively wide range of automotive applications. The tolerance ring is a radial spring that is press-fitted between two mating components, generating a retention force that fixes those components together.

The growing demand for convenience and safety functions in modern vehicles requires the integration of sophisticated automotive systems such as ABS, ESP and ACC. These systems require the detection of rotational movement and discrete angular positions are absolutely essential. The detection of steering angle, pedal and gear lever detection and positions of valves in motor management and climate control units impose high demands on the sensor devices, and frequently requires magnets manufactured from powdered metal.

No risk of damage

In the magnet assembly fitted with a tolerance ring, the fitting force can be accurately determined by the design of the ring and no longer depends heavily on component tolerances, which therefore eliminates the risk of damage.

Thanks to the resilient nature of Rencol's tolerance rings, the magnet arrangement also provides the magnet sensors with a useful degree of protection against vibration and shock. And finally, the use of a tolerance ring allows the magnet to be aligned after assembly of the poles.

Tolerance rings occupy very little space and are easy to assemble and fit, with no special equipment or machines required.