Thread: Question about ball bearing grade vs. hardness.
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Old 03-20-17 | 07:18 AM
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kcblair
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From: Mass.

Bikes: '80 Strayvaigin, '84 Ciocc Aelle-Shimano 105, '90 Concorde Astore /Campy Triple ,85 Bridgestone 500/Suntour, 2005 Jamis Quest, 2017 Raleigh Merit 1, Raleigh Carbon Clubman

Originally Posted by Andrew R Stewart
While I agree with grayEZrider's views on some of the failure modes of bike bearings I'll add that bearing alignment and initial preload are two also common causes of early failure. Andy
Hello Andy. Could you elaborate on this, specially "preload" . Thank you. KB
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