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|Tolerance of Mating
If an interference fit is desired, then the dimensions of these parts must be carefully controlled and the tolerances of the bearing bore and OD must be factored into a calculation of the maximum and minimum interference.
The following table shows recommended shaft and housing sizes and tolerances for different applications. It is assumed that bearings used are ABEC 5 tolerance (+0 to -0.0002 inch) for bore and OD. If a different grade of bearing is used, this will affect the recommended dimensions of the mating part.Table of Recommended Fits
L = Loose fit T = Tight fit d = Bearing bore from table D = Bearing O.D. from tableImportant notes for press fit bearings: