Years ago, I recall dunking things in liquid Nitrogen, 77K, to do what you're
trying to do. That's about 230K below room temperature. If my arithmetic is
right, a 1" diameter will shrink a couple of mils. Up to 20 mils over, looks
way to tight. There might be a reamer in your future.
Brian K.
On Apr 8, 2010, at 2:29 PM, Wayne wrote:
> 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
> _
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