[PSUBS-MAILIST] Press Fit

[hank pronk via Personal_Submersibles]

 Alan,The problem with your plan is, you will move your piece that your machining when you try to push the bearing in.  Hank
    On Thursday, March 29, 2018, 4:09:52 AM MDT, emile via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Hi Alan,

Press fit is good for a durable bearing construction. 
Force is not leading, you're to late when the force is too high... You can
find in a bearing handbook how much the diameter difference should be.
Is about 0,02 to 0,03 mm  for small /medium bearings.
Loctite 638 or 603 is a alternative.

Br, Emile

-----Oorspronkelijk bericht-----
Van: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
Namens Alan via Personal_Submersibles
Verzonden: donderdag 29 maart 2018 11:33
Aan: personal_submersibles at psubs.org
Onderwerp: [PSUBS-MAILIST] Press Fit

Hi,
I'm wanting to press fit a bearing in to my aluminium thruster housing &
wondering if I could make a tool slightly less in diameter than my bearing,
fit it in the lathes tail stock, & wind it in to force the bearing in to the
press fit.
  I have heard figures like 500lb force being used for press fitting, which
I won't get winding the tail stock, & probably don't require as there is not
a lot of dynamic force on the bearing. 
  I imagine there will be a lot of trial & error involved getting the bore
to the right diameter, & this method will allow me to keep the work in the
chuck & keep doing fine passes until I get it to the right diameter.
Any thoughts or experience with this thanks.
Alan

Sent from my iPad

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