[SEL] Press Fit Question for the Machinists (OT)

[Rob Skinner]

Are you asking about fitting a conical plug into a cylindrical hole?  If that's the case, fugetaboudit. If the plug is indeed cylindrical, 0.004" still seems a bit much. I'd guess closer to 0.0015", but you should check Machinery's Handbook for a better understanding. 

--	
Rob Skinner



On Nov 24, 2010, at 8:15 AM, "Arnie Fero"  wrote:

> Guys,
> 
> I'm reviewing a drawing that is calling for a press fit of a small tapered plug into
> a hole.  My gut feel is that the fit is too tight, but I'd really like to get some
> feedback from those of you with more practical experience.
> 
> The carbon steel block has a hole that is 0.161" (+.003 / -.000) in diameter.
> 
> The tapered carbon steel plug is 0.125" long.
> The small end diameter is 0.158" (+/-.001).
> The big end diameter is 0.165" (+/-.001).
> 
> My other thought is that the block that has the hole (and receives the press-fit
> plug) is 0.211" thick.  I'm thinking that pressing the plug (as dimensioned) into
> the hole might bulge the side walls of the hole outward.
> 
> Thoughts / comments / suggestions?
> 
> Thanks!!
> 
> Arnie
> 
> Arnie Fero
> Pittsburgh, PA
> fero_ah at city-net.com
>