17) Explain different types of fits.
Fits can be categorized into three groups: 1) clearance fit, 2) interference fit, and 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.
