Axle bearing location

syd, those bearings should have a tapered hole that mates up with the tapered part of the shaft. They're not really a press fit, though once they've been on the axle for a while they may be stuck on there pretty firmly. When reinstalling them they should seat nicely on the tapered part of the axle (I assume you're not trying to put 25877 bearings on there vs. the proper 25877T).