Tapered roller bearings are separate bearings, bearing the inner and outer ring with a tapered raceway. This type of bearing roller according to the number of columns is divided into single row, double row and four rows of tapered roller bearings and other different structural types. Single row tapered roller bearings can withstand radial load and axial load in a single direction. When the bearing to bear radial load, will produce an axial component, so when the need for another bearing the opposite direction of the axial force to balance. Widely used in automobiles, rolling mills, mining, metallurgy, plastics machinery and other industries.

Tapered roller bearing type code-named 30000, tapered roller bearings for the separation type bearings. Under normal circumstances, especially in the GB / T307.1-94 "radial bearing radial bearing tolerance" involved in the size of the tapered roller bearing within the outer ring and the inner component is 100% can be used interchangeably.

The outer ring angle and outer race diameter dimensions have been standardized with the same dimensions as the outer dimensions. It is not allowed to change during design and manufacture. So that the outer ring of the tapered roller bearing and the inner member can be universally interchangeable in the world.

Tapered roller bearings are mainly used to bear the radial load mainly radial and axial combined load. Compared with the angular contact ball bearings, bearing capacity, low speed limit. Tapered roller bearings can withstand axial load in one direction, can limit the shaft or shell in one direction of the axial displacement.