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Pulley Mount
RENCOL® Tolerance Rings to simply fix the drive pulley to shaft in a rack drive Electric Power Steering System.
Electric Power Steering is the preferred method of power assisted steering in Europe and Japan. RENCOL® Tolerance Rings are used on both rack and column mounted EPS systems and applications.
RENCOL® Tolerance Ring
- Good concentricity of mating components
- Ability to rework components
- Good performance over a range of component tolerances and operating temperatures
RENCOL® Tolerance Rings can be used to simply fix the gear wheel to the driven shaft -- replacing relative expensive keyways or splines. More commonly, however, RENCOL® Tolerance Rings are designed to allow slip between the gear wheel and the driven shaft at a predetermined torque level. This functionality enables the ring to protect the gear teeth from danger that would otherwise be caused by back-driven shocks (for example when the wheel hits a curb).
Benefits
Simple Fixing Application Benefits
- Replaces relatively expensive keyed or splined components
- Transmits high torques without risk of slip -- e.g. 250NM+ on a 25 mm shaft
- Simple press fit assembly
- Shaft can be reused should wheel need to be replaced
Torque Slip Application Benefits
- Allows slip between gear wheel and shaft to protect gear wheel from back-driven shocks
- Allows use of relatively soft gear teeth -- e.g. nylon plastic -- that offer enhanced noise reduction properties
- Improves system reliability
- Allows multiple slip cycles to provide long service life (graph at right)
- Simple press fit assembly
- Shaft can be reused if wheel needs to be replaced
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