[Shop-talk] tolerancing a interference or friction fit ???``

[Wayne]

On 4/8/2010 11:13 AM, john niolon wrote:
> I'm still trying to press in some steel sleeved bushings into tubular control
> arms for a front suspension I'm doing on my old truck.  Having a devil of a
> ... the control arm bore is mic'ing 1.250 +/- .002   the bushings are anywhere
> from 1.260 to 1.268.  No two measure the same.  It's a steel sleeve with
> rubber core over a inner steel sleeve that the suspension bolt slides

That sounds awfully tight, even assuming the parts are perfectly round, 
or able to deform to round.  A chamfered edges help a lot too.  But I'm 
not a machinist or engineer.  I did google "interference fit tolerance" 
and found this one near the top of the list: 
http://www.engineersedge.com/class_v.htm

-Wayne