Originally Posted by
rootboy
Still a bit of fretting damage on your lower race, JD, but I think you're right. Rollers are less susceptible to this than ball bearing headsets.
True; that is because the rollers have line contact instead of point contact, so the effective unit loading is lower.
Originally Posted by
rootboy
Newer sealed bearings eliminate the phenomena I've heard.
I'm skeptical; why should this be so?