Originally Posted by
Bob Shaver
I take the ceramic bearings out each year or year and a half, pop the seal, clean out the old grease, and put in the new, pop the seals back in and put the bearings back in the hub. Of 4 pairs of such bearings, I've had one ceramic ball get a chip in it. It didn't fail, but was making a rumbling sound.
Sounds just about like the process, frequency and time involved I use to maintain cup-and cone bearings and I've never had a chrome steel ball fail.