The accuracy and level of bearing

The accuracy of the rolling bearing (main) size accuracy and rotation accuracy. The accuracy level has been standardized, divided into five levels: P0, P6, P5, P4, and P2 level.
The accuracy is increased in sequence from level 0. It is sufficient for general use level 0, but when it is used in Table 1, it requires level 5 or higher accuracy.
Although the above accuracy level is based on the ISO standard, its name is different from the standards of various countries.
Table 2 lists the accuracy levels applicable to various bearing types and the comparison between the standards of various countries.

Size accuracy (projects related to shaft and shell installation)
1. The allowable deviation of the inner diameter, outer diameter, width, and assembly width
2. The diameter of the internal rectangular and external reunion of the roller group and external repetition The allowable deviation of the circular diameter
3. The allowable boundary limit value of the size of the angle
4. The allowable variable volume of width

Rotating accuracy (project related to the rotating body beating)
1. Internal The allowable radial beating and axial beating of the circle and the outer circle
2. The permission of the inner circle is permitted
3. The amount of allowable change of the outer diameter surface
4. The allowable allowance of the thrust bearing road to allow the thickness of the roller lane. Volume Volume
5. The allowable deviation and allowable variable volume of cone holes