Tapered bearings are separable bearings, and both the inner and outer rings of the bearing have tapered raceways. This type of bearing is divided into different structural types such as single-row, double-row and four-row tapered bearings according to the number of rows of rollers installed. Single row tapered bearings can withstand radial loads and axial loads in one direction. When the bearing is subjected to radial load, an axial component force will be generated, so when another bearing that can withstand the opposite direction axial force is needed to balance it. Widely used in automobile, rolling mill, mining, metallurgy, plastic machinery and other industries.

The ability of single row tapered bearings to withstand axial loads depends on the contact angle, that is, the angle of the outer ring raceway. The larger the angle, the greater the axial load capacity. The most used tapered bearings are single row tapered bearings. In the front wheel hub of the car, a small-sized double-row tapered bearing is used. Four-row tapered bearings are used in heavy-duty machines such as large cold and hot rolling mills.