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

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Starter Motor

Uses a tolerance ring to mount a gear, the tolerance ring provides simple overload protection in the event of a misfire.

Benefits include:

• Control of torque – acts as a slip clutch
• Allows use of dissimilar materials for component parts
• Simple in line part – small packaging space
• Protects motor against overload situations

starter 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