Calculate tolerances

Tip: For your 1D tolerance analysis calculations, consider using the Autodesk® Inventor® Tolerance Analysis add-in. Inventor Tolerance Analysis provides a rich set of tools that helps you more clearly understand the impact of mechanical fit and performance based on the cumulative dimensional variation.

For more information, see To Define Tolerance Stackups.

  1. On the ribbon, click Design tab Power Transmission panel Tolerance Calculator .
  2. In the Dimensions List area, click "Click to add a dimension" to add dimension.
  3. Click to specify tolerance.
  4. Click to set the type of element within the chain.
  5. Click Calculate.

These procedures create an example using the sample specifications:

Linear dimensional analysis - Design calculation

Sample Data:

  1. Design tolerance of one element in chain. Tolerance of closing element is known.
  2. Bearing width B = 18 ( +0 / -0.12 )
  3. Retaining ring width s = 1.75 h11
  4. Required assembly clearance v = 0.15 up to 0.35 (Closing)
  5. Groove distance on shaft A = ? (Resultant)
  6. Click Calculate to calculate tolerance. A = 20 ( -0.08 / -0.1 )

Linear dimensional analysis - Check calculation

Sample Data:

  1. Tolerance of closing element is a result. Good for validity check of designed tolerances.
  2. Bearing width B = 18 ( +0 / - 0.12 )
  3. Retaining ring width s = 1.75 h11
  4. Groove distance on shaft A = - 20 (- 0.08 / - 0.1 )
  5. Resultant assembly clearance v = ? (Resultant, Closing)
  6. Click Calculate to calculate tolerance. v = 0.25 ( +0.1 / -0.1 )