Bearing Depot & Supply stocks a full line of self-aligning ball bearings generating less friction than any other type of rolling bearing. This enables them to run at higher speeds and temperatures These self aligning ball and roller bearings come in inch and metric (mm) dimensions. A Self-Aligning Bearing has two rows of bearing balls and a concave spherical raceway in the outer ring. Therefore, the bearing is self-aligning and insensitive to misalignments of the shaft in relation to the housing. Self Aligning Bearings are made for many applications where considerable shaft misalignment is expected. Self Aligning Bearings also have the lowest coefficient of friction of all rolling bearings, making them capable of running cooler at higher temperatures.