Inch Tolerances
Types of Fit
There are four major types of fits.
- Clearance Fit
- Interference Fit
- Transition Fit
- Line Fit
What is a clearance fit?
- There is always a space.
- Min. Clearance > 0
What is an interference fit?
- There is never a space.
- Max. Clearance <= 0
What is a transition fit?
- Depending on the sizes of the shaft and hole there could be a space or no space.
- Max. Clearance > 0
- Min. Clearance < 0
What is a line fit?
- There is a space or a contact (hole dia = shaft dia)
- Max. Clearance > 0
- Min. Clearance = 0