Spherical roller bearing with two rollers, mainly bear radial load, but also can withstand axial load in either direction. With high radial load capacity, especially for heavy load or vibration load, but can not withstand pure axial load. The raceway of the bearing outer race is spherical shape, so the self-aligning performance is good and the coaxiality error can be compensated. It is suitable for large machinery and equipment, such as mine,metallurgy, etc.