Originally Posted by
JohnDThompson
No, the force is confined between the crank arm and the face of the bottom bracket cup. The bearings aren't loaded at all in the process.
Originally Posted by
dddd
Wait, think that over, the arm will pull fiercely on the spindle and thus brngs, no?
It doesn't hurt the bearings on drill presses or lathes when you use the wedges to remove the chuck, so I doubt it would hurt your bottom bracket bearings.