The accuracy of rolling bearings is mainly divided into the dimensional accuracy and rotation accuracy. Accuracy class has been standardized and is divided into P0 level, P6 level, the P5 level, P4, P2 five levels.

In order to improve accuracy from 0, is adequate for general purpose 0, but for the special conditions or situations, or 5 or higher accuracy.

Above accuracy class is based on ISO standards for benchmarking, but the call in the different national standards.

Bearing dimensional accuracy (installed with the shaft and housing-related projects)
1, diameter, diameter, width, and the assembly of the width of the allowable deviation
2, the roller group within the complex circle diameter and outside the complex diameter tolerances
3, the permitted limit value of chamfer dimension
4, the width of the allowable amount of change

Bearing rotation accuracy (beating with the rotating body-related projects)
1, the inner ring and outer ring to allow radial runout and axial beating
2, the inner ring to allow lateral beating
3, the outer diameter surface tilt to allow changes in the amount of
4, the thrust bearing roller Road thickness to allow changes in the amount of
5, the conical bore tolerances and allow changes in the amount of


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