This type of bearing is equipped with a spherical roller between the outer race of the spherical raceway and the inner race of the double raceway. According to the internal structure, it is divided into four types: R, RH, RHA and SR, due to the arc center of the outer raceway and The bearing center is consistent and has self-aligning performance, so the shaft misalignment caused by the deflection or misalignment of the shaft or the casing can be automatically adjusted, and the radial load and the bidirectional axial load can be withstood. In particular, the radial load capacity is large, and it is suitable for bearing heavy loads and impact loads. The tapered bore bearings can be assembled and disassembled on the shaft by using fasteners or withdrawal sleeves.

There are two types of tapered holes (taper):
1:30 (auxiliary code: K30)...Applicable to 240, 241 series,
1:12 (auxiliary code: K).........Applicable to other series.
Oil holes, oil grooves and positioning pin holes (one) can be provided on the outer ring. Oil holes and oil grooves can also be provided on the inner ring.

Mainly applicable cages: copper alloy cutting cages, steel stamping cages, pin cages, synthetic resin forming cages.

Main uses: paper machine, speed reducer, railway vehicle axle, rolling mill gear box seat, rolling mill roller table, crusher, vibrating screen, printing machinery, woodworking machinery, various industrial speed reducers, vertical belt seated self-aligning bearings .