Tapered roller bearings are separable bearings, and the inner and outer rings of the bearing have tapered raceways.Mainly bear the combined radial and axial loads mainly in the radial direction. The bearing capacity depends on the raceway angle of the outer ring, and the larger the angle, the greater the bearing capacity. This type of bearing is a separable bearing, which is divided into single-row, double-row and four-row tapered roller bearings according to the number of rows of rolling elements in the bearing.

The clearance of single-row tapered roller bearings needs to be adjusted by the user during installation; the clearance of double-row and four-row tapered roller bearings has been given according to the user's requirements when the product leaves the factory, and does not need to be adjusted by the user.

When single row tapered roller bearings are used in pairs (basic dimensions can be different).

Bearings used in pairs are generally used in industry and automobiles. For example, 11949 and 48548 are used in pairs.