What factors should be considered in bearing selection?


Slip fit length compensation

Non-separable bearings (such as deep groove ball bearings and spherical roller bearings) can also be used as swimming bearings. One of the two ferrules of this type of bearing is fitted with no axial fixing surface. Therefore, a ferrule of the bearing can move on its support surface.

Separable bearing (accuracy)

This is a kind of bearing that can be installed separately from the ferrule. When both ferrules are tightly fitted, the advantages are outstanding.

The separable bearings include four-point contact ball bearings, double row angular contact ball bearings with double inner rings, cylindrical roller bearings, tapered roller bearings, thrust ball bearings, thrust cylindrical roller bearings and thrust spherical roller bearings.

Here is also a description of a non-separable bearing type:), non-detachable bearings are: deep groove ball bearings, single row angular contact ball bearings, self-aligning ball bearings, Peng-shaped roller bearings and spherical roller bearings.


In most cases it is sufficient to apply a rolling bearing of normal size and rotation accuracy. When the requirements are higher, the bearings require a higher level of accuracy (eg machine spindle Tilting pad journal bearing)