This type of ball bearing is recommended when alignment of the shaft and housing is difficult and the shaft may flex. The outer ring has a spherical raceway and its center of curvature coincides with that of the bearing; therefore, the axis of the inner ring, balls and cage can dmore...
Self-aligning ball bearings have a spherical outer ring raceway, the center of whose curvature meats that of the bearing itself, so that the inner ring, ball and cage continue to rotate, aligning themselves if they have become misaligned within design limits. This type of bearingmore...