Tapered roller bearings are separate bearings, and the inner and outer rings of the bearings have tapered raceways. 

The ability of single-row tapered roller bearings to bear axial load depends on the contact angle, that is, the outer ring raceway angle. The greater the angle, the greater the axial load capacity. The most used in tapered roller bearings is single row tapered roller bearings. 

The optimized roller design on the rib and the surface finish of the rib can promote the formation of a lubricant film, thereby reducing friction. This also reduces the heat generated by friction and rib wear. In addition, the bearing can better maintain the preload and reduce the noise level during operation.

The basic design of the 32305 bearings. And the shape of the logarithmic raceway of the bearing and crown raceway optimizes the load distribution along the contact surface, reduces the peak stress at the roller end, and reduces the sensitivity to misalignment and shaft deflection. It has a conventional straight line.

The optimized surface treatment of the roller and raceway contact surface is conducive to the formation of the hydrodynamic lubricant film.

That is, the inner ring with roller and cage assembly (inner ring assembly) can be installed separately from the outer ring. In addition, the detachable parts are interchangeable. Therefore, this facilitates installation, disassembly, and maintenance inspection procedures.