Matters needing attention when matching deep groove ball bearings

Fixed load

The composite radial load acting on the bearing ring is borne by the local area of the ring raceway and transmitted to the corresponding local area of the shaft or bearing seat. This load is called the fixed load. It is characterized by a composite radial load vector with absolute rest of the ring. Looser fitting can be used for the rings subjected to directional loads.

Rotary load

The composite radial load on the ring rotates along the circumferential direction of the raceway and is borne by each part in sequence. This kind of load is called the rotational load, and its characteristic is that the composite radial load vector rotates absolutely in the ring. The rings under rotating load should be tightly matched. In special circumstances, such as the load is very light, or the rings only occasionally rotate at low speed under heavy load. When the Japanese ZVQ bearing selects harder data and higher nominal roughness, the rings under rotating load can also be looser matched.