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

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EPS Gear Mount

Uses a tolerance ring to control the torque of the drive gear (acts a simple fuse) in a column mounted electric power steering system


Benefits include:

• Control of torque overload (slip clutch)
• Controlled concentricity of parts
• Ability to use dissimilar materials
• Good performance over a range of component tolerances and operating temperatures

 

Animation / Video (Windows Media, 1.7MB)

Case Study (Adobe PDF)

gear 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