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Art -
Yeah, if you have thc time and inclination I think it would be educational for Brickboarders to see a chewed up inner race. The cage is soft compared to the races, so a hacksaw will work easily if the Dremel is a longer reach for you.
I never gave rolling-element bearings much thought until I started working in the jet engine biz. One of the things I learned is that ball/roller bearings make progressively more noise at the early stages of wear, but then get *real* quiet sometime prior to ca astrophic failure. The lesson here is that if a wheel bearing has been making noise for a while but then seems to quiet down, watch out!!! The inner race tends to get chewed up more since the load per inch of circumference is greater than the outer race's, even though the balls/rollers travel faster on the outer race and the tribologists tell us that metal-to-metal wear is a velocity dependent effect.
On behalf of all those who have benefitted from your contributions, I thank you for being generous with your time and photographic efforts. I add what I can from time to time, but your illustrated contributions are priceless. Many thanks!
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