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

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Wiper Motor Bearing Mount

Uses a tolerance ring to mount a bearing / bush in motor system.


Benefits include:

• Allows for slight misalignment of the bearings
• No machining of bearing pocket in the motor can housing
• Allows easier assembly of bearing to motor-can
• Allows for a slight draft angle on motor can bearing pocket (up to 0.5 degrees)

 

Case Study (Adobe PDF)

wiper motor
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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