Recomended fits for shaft
General
The accuracy of the fits and the geometrically correct design of all connecting parts have a direct effect on the running accuracy and the dynamic properties of the bearing and the table.
Please observe the construction notes in the general catalogue chapter.
The actual dimension of the bearing bore can be found in the inspection report enclosed with every bearing.
Normal requirements
On rotating and stationary shafts, the bearing inner ring is to be supported across its whole surface and the shaft is to be designed with a fit acc. to h5. In this way, the bore tolerance of the bearing generates a transition fit with a slight tendency to a clearance fit.
Higher requirements
For special requirements, the clearance fit must be further restricted within the specified tolerance classes:
■ Higher running accuracy:
If maximum running accuracy is specified, the clearance fit 0 should be aimed for. Otherwise the clearance fit can add itself to the bearing radial runout.
■ High dynamic properties:
At higher speeds and longer duty cycles, an press fit of 0.005 mm must not be exceeded.