Noticed bearings feel a bit rough, some play and excessive friction, so going to swap them. Ive been told the size is 32007 *2. Anything I should know? SKF/Timkin are not expensive in this size. Second question how did I ruin them? The lathe was not set up well for parting, so I often hacksaw'ed static parts held in the chuck, caused brinnelling? Or by tapping morse taper tools out? Or, its just a Chinese lathe with Chinese bearings, 4 years is not bad, for what I have done.