The self-aligning roller bearing has a double row of rollers, the outer ring has a common spherical raceway, the inner ring has two raceways and is tilted at an Angle relative to the bearing axis. 

Tapered roller bearings are separate bearings, and 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 roller bearings according to the number of rows of rollers installed.

Deep groove ball bearings mainly take radial load as well as take moderate axial load. With less coefficient of friction, high limiting speed, large size range and colorful combination of structure; they are suitable for tractor, motors, automobiles, motorcycles, and other common machinery, as a widely used type of bearings in machinery industry.

The traditional automobile wheel bearings are composed of two sets of tapered roller bearings or ball bearings. The mounting, oiling, sealing and clearance adjustment of the bearings are all carried out on the automobile production line.

The main function of wheel hub bearing is to bear load and provides accurate guidance for the hub rotation. It is a very important part which can bear both the radial load and axial load. The traditional bearing for car wheel hub is composed by two set of conical roller bearing. The installation, greasing, sealing and adjustment of play are all done in the car production line.