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Rolling bearing type selection-05
2. Tolerance grade selection
The nominal grade of the bearing is mainly determined based on the rotation accuracy requirements of the shaft pair support. Under normal circumstances, for example, spur gear reducers with large meshing tolerances can use PO grade bearings, but some shafts that have strict requirements on rotation accuracy or high speeds, such as high-precision, small runout machine tool spindles, use higher than PO grade bearings. grade bearings.
When using bearings with high tolerance levels, the manufacturing tolerance of the shaft housing should be compatible with the bearing tolerance level and should have sufficient structural rigidity.
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