Rolling bearing accuracy (main) dimensional accuracy and rotation accuracy. The accuracy level has been standardized and divided into five levels: P0 level, P6 level, P5 level, P4 level, and P2 level.
Accuracy increases from 0 to 0. It is sufficient for general purpose 0 levels, but when used for the conditions or occasions shown in Table 1, 5 or more levels of precision are required.
Although the above accuracy class is based on the ISO standard, its name is different in each country's standards.
Dimensional Accuracy (Items Related to Axis and Housing Installation)
1. Allowable deviation of inner diameter, outer diameter, width and assembly width
2. Allowable deviation of round diameter and outer round diameter in roller group
3, the allowable limit value of chamfer size
4, the allowable variation in width
Rotation accuracy (items related to bouncing body)
1, the allowable radial runout and axial runout of the inner ring and outer ring
2, the allowable lateral runout of the inner ring
3, allowable variation in the outer diameter surface inclination
4. Allowable variation of the thickness of thrust bearing raceway
5, the conical hole allowable deviation and allowable changes
