WHAT IS A TOLERANCE RING?
WHY USE A TOLERANCE RING?

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Rencol Silver Jubilee 1982-2007

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EPS Pulley Mount

Uses a tolerance ring to simply fix the drive pulley to shaft in a rack drive Electric Power Steering system


Benefits include:

• Simple and easy to assemble
• Good concentricity of mating components
• Ability to rework components
• Good performance over a range of component tolerances and operating temperatures

 

Case Study (Adobe PDF)

pulley mount
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Tolerance Rings are radial spring fasteners
that are press fitted between two mating components. This generates a retention force that fixes those components together, whilst also satisfying other functional requirements such as Torque Drive, Overload Protection, NVH Performance and Differential Thermal Expansion.


Fasten annular components
Reduce noise & vibration
Compensating for thermal expansion
Predictable & repeatable slip
Avoid resonance frequencies
Overload protection