[Dick Linn]

Our shaft was precisely at .6250 while the bearing holes are about .002 under. We're ordering another shaft from MSC (page 1802), which should be anywhere from -0.0005 to -0.0015 under. Hopefully we'll get one that's on the small side and won't have to sand much. I didn't check the McMaster-Carr equivalent to see what it's tolerances were.

BTW, a .002 press-fit isn't unusual but makes it a pain to get things in and out. In normal service, you wouldn't want the inner bearing race to start spinning on the shaft, or it could end up welded to the shaft.