"Larry Jaques" wrote in message
news
On Thu, 28 May 2015 19:50:25 -0400, "Jim Wilkins"
wrote:


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

I forgot to say that you can firm up a race in a seat by tapping a
center punch several times (equidistant) around the seat ID. The
dimples will help hold the race but not be high enough to deform it.
I've done this on disc and drum brake hubs for decades, all without
a
single failure or return.

My usual method is to bore with a coarse enough feed to leave ridges
that the pressed-in part deforms, so there's more compliance than if
the bore were smooth. In this case the steady (=1300 Lbs) or shock
(=?) load might further compress them until the bearing is loose.

It's not a critical fit but it does make a good exercise to improve my
precision machining skill.

-jsw