Tapered roller bearings are units composed of tapered raceways (inner and outer rings) and tapered rollers. Tapered roller bearings mainly bear combined radial and axial loads mainly in radial direction. The bearing capacity depends on the raceway angle of the outer ring. The greater the angle is, the greater the bearing capacity is. This kind of bearing is a separate type bearing. It can be divided into single row tapered roller bearing, double row tapered roller bearing and four row tapered roller bearing according to the number of roller rows in the bearing. The clearance of single row tapered roller bearings shall be adjusted by users during installation; the clearance of double row tapered roller bearings and four row tapered roller bearings has been provided according to the requirements of users when the products leave the factory, so those bearings do not need any adjustment.
The outer ring (or inner ring) of the double row tapered roller bearing is an integral whole. The small end faces of the two inner rings (or outer rings) are similar, and there is a space ring in the middle. The clearance is adjusted by the thickness of the space ring, and the thickness of the space ring can also be used to adjust the pre-interference of the double row tapered roller bearing.
Tapered roller bearings can be found in several daily applications, especially on wheels. Although they are originally designed for truck wheels to improve their performance in agriculture, they have adapted to the widespread use in the automotive industry. Tapered roller bearings are usually used in pairs to bear equal axial forces in either direction. They have been developed for a long time since the horse-and-buggy days. However, the concept has survived and flourished 120 years later. Many bearing roller manufacturers can be found in China today. Their roller bearings are widely applied in agricultural equipment, gearboxes and axles, engines and reducers, propellers, railroad axles, as well as in the fields of mining and construction.
Tapered roller bearings are designed to reduce friction and reduce the heat generated, leading to the failure of previous bearing designs. The tapered shape allows the load to be evenly transmitted during rolling, which greatly reduces the wear and improves the durability, so that it is now almost universally used for drive and rotary shafts around the world. Because of the high durability of these bearings, these shafts can often receive free maintenance over hundreds of thousands of miles. In addition, because of their high reliability, they can also handle many heavy duty operations.
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