miniature ball bearings Precision bearings distinction

Precision bearings and plain bearings should be used to distinguish between the following points:

1, the size of the required value is not the same, high level of accuracy of the product of its size deviation (inside diameter, outside diameter, oval, etc.) than the fine

Value of the low level of product requirements to be smaller;

2, rotating accuracy requirement values ​​self aligning ball bearings‍ are not the same, high level of accuracy of the product of its rotational accuracy (internal diameter of the beating, beating the outer diameter of the end face of the raceway beating, etc.) than the value of the low level of precision to be strict product requirements;

3, the surface shape and surface quality requirements values ​​are not the same, high level of accuracy of the product on its surface shape and surface quality (or channel raceway surface roughness, circular deviation, ditch-shaped deviation) than the low accuracy level the value to be strict product requirements;

4, the accuracy of its products particularly high grade material than the material properties of the general levels of precision products more favorable.

Precision bearings in accordance with ISO double row ball slewing bearing‍ grading standards are divided into:. P0, P6, P5, P4, P2 successively higher grades, where P0 is the general accuracy and precision are other grade levels. Of course, different classification criteria, different types of bearings, their method for classifying different, but the meaning is the one to. Performance requirements on the use of precision bearings rotating body with high runout accuracy, high-speed, low friction and friction change.