Hi Gang- It's from a 630 @ 19K miles. This burnishing you see on the rear axle started long, long ago though. The bearings always seemed to be fine, so didn't replace them (until now, this week.) I understand that this is typically caused by bad, or stiff, bearings (spinning on the axle, under load.) The shop (that I described this axle to) said they'd replace the axle. This burnishing you see isn't deep- you can barely get a fingernail to hang up on it. Would you replace it? Perhaps flip it so that the burnishing is on the brake side (as opposed to the torquey side)? I'd prefer not to replace the thing, but am also concerned that it'll just continue (as that burnished area is slick.) The burnished area, BTW, only goes around half of it (and it's also "chrome" looking on that affected area- what you see on that area is a reflection of flowers.) Thanks for your opinions.
Grease it an use it. Esp if you are fitting new bearings. Ensure axle is adjusted equally both sides.
my axis is only slightly less ruined but those signs have always been there. you can still use it for me
All good- huge thanks all. Yes- I agree- I do not think it's necessary to replace the thing. You know how these things go, though: The guy at the shop seemed emphatic about it so I thought I'd seek an opinion here. Bike is back together with a new rear tire and I'm enjoying riding it!
