Precision

Precision bearings are divided into: P0, P6, P5, P4, P2 according to the ISO classification standard. Of course, different grading standards and different types of bearings have different grading methods, but the meaning is the same. The performance of precision bearings requires the rotating body to have high runout accuracy, high-speed rotation and small friction and friction changes.

The difference between precision bearings and ordinary bearings:

The dimensional requirements are different, and the dimensional deviations of products with high precision grades are smaller than those required by products with low precision grades;
The required value of rotation accuracy is different, and the rotation accuracy of products with high accuracy grades is stricter than that of products with low accuracy grades;
The required values of surface shape and surface quality are different. The surface shape and surface quality of products with high precision grades are stricter than those required by products with low precision grades;
Products with a particularly high accuracy class have more favorable material properties than products with a general accuracy class.