Lloyd E. Sponenburgh wrote:
"Jim Wilkins" fired this volley in
news:mk89h1$mft :

For something that won't be used much is there a problem if a bearing
fits loosely in the 40mm bore?

Not TOO much of a problem, so long as you have a 'keeper' to prevent
it's migrating out of its cavity. That, and so long as the speed is
kept low, it won't damage the bearing to 'roll' on its outer
periphery.

But (cough!) why would you be pounding on the INNER race to remove a
bearing? The access hole at the bottom of the cavity (through which
the shaft will penetrate) can be only a few-thou smaller than the
outer race, and it will be retained on that end just fine. Then
you'd be able to use a proper outer race-sized drift to remove it,
were the fit too snug.

Lloyd

Or he can make the bearing a slip fit and use some bearing retaining
loctite to keep the outer race stationary .

--
Snag