Question

What is the range of shafts which produce transition fits?

(a) Shaft ‘a’ to ‘h’

(b) Shaft ‘e’ to ‘n’

(c) Shaft ‘d’ to ‘h’

(d) Shaft ‘j’ to ‘n’

The question was asked by my college professor while I was bunking the class.

This interesting question is from Guide for Selection of Fits in portion Limits, Fits and Gauges of Engineering Metrology

Answer 1

The correct option is (d) Shaft ‘j’ to ‘n’

The explanation: ‘a’ to ‘h’ shafts produces clearance fits with H7 basic hole. ‘j’ to ‘n’ produce transition fit with H7 basic size. Transition fits may result in either interference or clearance fit. It will depend upon the actual size of tolerance of mating component.