Tolerances (for ISO standard) dialog box

Specifies the tolerance class and fit class.

Access:

Ribbon: Design tab Power Transmission panel Involute Splines. In the Involute Spline Connection Generator, click next to the Length edit field.

OK

Confirm the selection and close the dialog box.

Cancel

Closes the dialog box.

Tolerance class

Select the class of the tolerances.

This standard includes four classes of tolerances on space width and tooth thickness. This provides a range of tolerances for selection to meet a design need. The classes are variations of the former single tolerance which is now Class 5 and are based on the formulas shown in the footnote of Table 4. All tolerance classes have the same minimum effective space width and maximum effective tooth thickness limits so that a mix of classes between mating parts is possible.

For other tolerance classes:

Class 4 = 0.71 x Tabulated value

Class 5 = As tabulated in table

Class 6 = 1.40 x Tabulated value

Class 7 = 2.00 x Tabulated value

Fit class

Select the class of fit.

Design tab