Rolling self-aligning bearings have two columns of symmetrical spherical roller, the outer ring has a common spherical roller, the inner ring has two inclined with the bearing axis of the raceway, has a good aligning performance, when the shaft bending force Or the installation of different heart can still be used when the bearing, aligning with the bearing size series vary, generally allow the adjustment of the angle of 1 to 2.5 degrees, the type of bearing load capacity, in addition to bear the radial load Bearings can also withstand the role of the axial load of two-way, with good impact resistance, in general, rolling-aligning bearings allow the work of low speed.