Keith S

For roller wheel bearings (ball or cylindrical): The idea behind the inner-race (not the outer race) rotating on the spindle is to increase bearing life - it does not rotate fast, but the rotating inner race is another bearing surface. If it didn't/doesn't rotate, the rollers would quickly wear the bottom of the inner race. However, the rotating inner race can/does cause wear on the bottom of the spindle - normally the top of the spindle has very little (if any) wear. You'll almost always see minor wear on the bottom 1/3rd of the spindle - that's where the load is. Unless specified as a press fit, putting a few punch marks on the spindle does not make the bearing a press fit, it just messes up that precision-ground bearing surface. The manufacturer spent a lot of money machining that surface.

Umm... Unless there's something new in the last 40 years, the bearing race is supposed to spin on the spindle.