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Shrinkage Fitting

Shrinkage Fitting

Shrinkage Fitting

I want to know the temperature for shrinkage fitting. i want to fit a ring of outer dia 715mm, inside dia 675mm into hole of dia 684, then upto how much temperature i have to cool ring to fit into the hole ?

RE: Shrinkage Fitting

Do you know the material of which the ring, and the hole, are made?


Mike Halloran
Pembroke Pines, FL, USA

RE: Shrinkage Fitting

Material is Cast iron grade-250

RE: Shrinkage Fitting

Cast iron has a coefficient of thermal expansion of around 10.5x10-6 m/m/K

To fit a 715 diameter ring into a 684 diameter hole, you need a shrinkage strain of about 4.3%.

This would need a temperature drop of around 4000 K (or a temperature rise in the hole of around the same amount, assuming it is also cast iron).

Are you sure your parameters are correct?

Student question?


RE: Shrinkage Fitting

Thanks a lot to everyone

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