The inner and outer rings of tapered roller bearings have tapered raceways, with tapered rollers installed between the raceways. If the tapered surface is extended and eventually converges at a point on the bearing axis, tapered roller bearings are mainly used to bear radial and axial combined loads, mainly radial loads. The axial bearing capacity of a bearing is determined by the contact angle, and the larger the contact angle, the greater the axial bearing capacity. Conical roller bearings are separable bearings, with an inner ring consisting of rollers and a cage. They can be installed separately from the outer ring to limit the axial displacement of one side of the shaft or housing, and do not allow the shaft to tilt relative to the housing hole.

Under the action of radial load, additional axial force will be generated. Therefore, generally, in the two supports of the bearing, the outer and inner rings of the bearing should be installed relative to each end face. The main uses of this type of bearing are: front and rear wheels of automobiles, transmissions, differentials, small gear shafts, machine tool spindles, construction machinery, large agricultural machinery, railway vehicle gear reducers, and rolling mill roll neck small reducers.