Self-aligning ball bearings have two rows of balls and a common sphered raceway in the outer ring.Self-aligning ball bearings generate less friction than any other type of rolling bearing, which enables them to run cooler even at high speeds. We can supply different cage type , such as Stamped steel,PA66 glass fibre reinforced and Machined brass . These type bearings are widely used in paper industry,Gear Box ,Spinning machine, plastic machinery, medical equipment and all kinds of industrial machinery .If you want to know more about WSBC 1305K self-aligning ball bearings , welcome you contact us freely .