Shaft into sleeve

[jlarocque]

I have a need to get more opinions on fitting a shrink interference fit.

bore of roll sleeve is 5-14" Dia witha shaft interference fit of 0.005". I have to drive the shaft 10" into sleeve.

Roll is existing and lagged rubber covered.

Shaft is 4140 steel and sleeve is Cast iron.

How can I cool it easily and how much to be sure I get it right?


JL

 

[MikeHalloran]

Just off the top of my head, that sounds like a _lot_ of interference.

You'll find some useful equations in Machinery's Handbook. You should check the numbers.



Mike Halloran
Pembroke Pines, FL, USA

 

[jlarocque]

No It is not ; the problem lies in the factI canot heat the hub to help me

JL

 

[KENAT]

How can I cool it easily and how much to be sure I get it right?

How much find some equations, as Mike suggests look in machineries. You could try from first principles based on the thermal coefficient of expansion for the materials but the fact one part is 'rubber lagged' may complicate it.

As to how to cool it:

Put it in a Freezer?

Use Dry Ice?

Liquid nitrogen's probably too cold and will make the part brittle but it may be fun!

KENAT, probably the least qualified checker you'll ever meet...

 

[jlarocque]

thas confirms what I think too..thanks guys and or gals

JL