TOLERANCING - Inch Tolerances

Previous        Next

 

Inch Tolerances

 

Lecture content

Types of Fit

 

There are four major types of fits.

 

  1. Clearance Fit
  2. Interference Fit
  3. Transition Fit
  4. 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

 

Previous        Next