Double Row Self-Aligning Ball Bearings are built for use where considerable amount of shaft deflection or angular misalignment are expected. These Ball Bearings comprise of two rows of ball sets with cages and a common spherical raceway in outer rings. These Self-Aligning Ball Bearings are capable of taking angular misalignment of shaft relative to housing. Double Row Self-Aligning Ball Bearings allow the lowest friction of all rolling element bearings and are able to run cooler even at high operating speeds.