Spherical roller bearing can be submitted to high load and some axial load. The outer raceway of the bearing is spherical and have the feature of self-alignment, when the shaft is forced to bending and angle between the inner ring and outer ring’s central lines is less than 1° -2° 30°,the bearing can working as normal .The bore of this kind of bearing have two designs, that’s cylinder and taper, the taper bore is 1;12 or 1：30,there’s oil groove and undercut, that can be chose by customers.