1. The self-aligning roller bearing is the bearing that betweenthe inner rings of the two raceways and the outer ring taking theraceway as the spherical surface.

2. The drum-shaped rollers are equipped a spherical outer ringbetween the two raceways of the inner ring raceway assembly withdrum-shaped roller bearings.

3. There are two rollers in the self-aligning roller bearing,mainly bearing the radial load. It is also able to withstand theaxial load in either direction.

4. The high radial load capacity of the self-aligning rollerbearing makes it especially suitable for the overload or vibrationload work, but it can not afford the pure axial load.

5. The outer ring raceway of this kind of bearing is sphericalshape, thus the aligning performance is so good to compensate theconcentricity error.