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Which of the following conditions is related to Clearance fit?

Which of the following conditions is related to Clearance fit? Correct Answer Hole > Shaft

Concept:

Fit:

  • Fit is the relationship between two parts to be assembled, resulting from the difference between their sizes, before assembly. 
  • Fit refers to the mating of two mechanical components, manufactured parts are very frequently required to mate with one another.
  • They may be designed to slide freely against one another or they may be designed to bind together into a single unit.
  • The most common fit found in the machine shop is that of a shaft in a hole.
  • Fit represents a degree of tightness or looseness between two mating parts to perform a definite function.

Following fits exist between the shaft and the hole

  • Clearance fit:
    • Hole diameter is always bigger than the shaft diameter.
    • Both maximum and minimum clearance are always positive.
  • Transition fit:
    • The hole diameter is close to the shaft diameter.
    • Maximum clearance is positive and minimum clearance is negative.
  • Interference fit:
    • Hole diameter is always lesser than shaft diameter. 
    • Both maximum and minimum clearances are always negative.

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