Single row tapered roller bearings belong to separate bearings, and the inner and outer rings of the bearing have tapered raceways. It can bear radial load and single direction axial load. When the bearing is subjected to radial load, an axial component will be produced, so that another bearing which can bear the axial force in the opposite direction is to be balanced.
Tapered roller bearings are mainly used to bear radial load combined radial and axial load. Compared with angular contact ball bearing, its bearing capacity is large and its limit speed is low. Tapered roller bearings can bear axial load in one direction, and can limit axial displacement of shaft or shell in one direction.