Knowledge Answer

Analyze the failure of a spiral ring due to 'Spinning' in the groove.

2026-06-16 FAQ

Spinning occurs when a retaining ring is used to secure a component that rotates relative to the shaft or housing, and the friction between the component and the ring is higher than the friction between the ring and the groove. This causes the ring to rotate, which can wear down the groove wall and the ring itself. In high-speed applications, this frictio...

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Spinning occurs when a retaining ring is used to secure a component that rotates relative to the shaft or housing, and the friction between the component and the ring is higher than the friction between the ring and the groove. This causes the ring to rotate, which can wear down the groove wall and the ring itself. In high-speed applications, this friction can generate enough heat to anneal the ring, causing it to lose its spring temper. The solution is to ensure the ring is preloaded against the groove wall or to use a keyed ring that is mechanically locked against rotation.

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