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Mechanical Engineer - Interview Questions
Explain different types of fits.
Fits can be categorized into three groups :

1) clearance fit
2) interference fit
3) transition fit.


Clearance fit : This fit is identified by the occurrence of clearance between the two similar parts.

Interference fit : In this fit, the size of the mating parts is predefined to occur interference between these parts. Here the hole tolerance zone is completely below shaft tolerance zone.

Transition fit : It is a comptonization between clearance and interface fit. In this case of fit, the tolerance zone of the shaft and hole overlaps.
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