Tapered roller bearings are separate bearings. The inner and outer rings of the bearings have tapered raceways. This type of bearing is divided into single-row, double-row and four-row tapered roller bearings according to the number of rows of installed rollers. Single row tapered roller bearings can withstand radial loads and axial loads in a single direction. When the bearing is subjected to a radial load, there will be an axial force component, so when another bearing can withstand the axial force in the opposite direction to balance.
Tapered roller bearings are radial thrust roller bearings with tapered rollers. There are two kinds of small cone angle and large cone angle. The small cone angle mainly bears the radial and axial combined load mainly based on radial load. It is often used in double use and reversed installation. The inner and outer races can be separately installed. The radial and axial clearance can be adjusted during installation and use. The large cone angle is mainly subjected to the combined axial and radial loads mainly due to axial load. Generally, it is not used alone to bear the pure axial load. When paired configuration (relative to the end of the same name) can be used to bear the pure radial load.
The ability of a single row tapered roller bearing to withstand axial loads depends on the contact angle, that is, the outer ring raceway angle. The larger the angle, the greater the axial load capacity. The largest amount of tapered roller bearings is single row tapered roller bearings. In the front wheel hub of the car, small-sized double-row tapered roller bearings are used. Four-row tapered roller bearings are used in heavy machinery such as large cold and hot rolling mills.
