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Statisticall Tolerance

By Mohammedazim Tinwale on 13 Sep 11:37 1 answer 77 views 1 comment

What does statistical tolerance means in gd&t?

1 answer

  • ML
    ML 7 days ago

    Statistical Tolerance - is the assigning of tolerances to related components of an assembly on the basis of sound statistics (such as the assembly tolerance is equal to the square root of the sum of the squares of the individual tolerances). By applying statistical tolerancing, tolerances of individual components may be increased or clearances between mating parts may be reduced. The increased tolerance or improved fit may reduce manufacturing cost or improve the product's performance, but shall only be employed where the appropriate statistical process control will be used. Therefore, consideration should be given to specifying the required Cp and /or Cpk or other process performance indices.

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