Self-aligning ball bearings have two rows of balls with a common sphered raceway in the outer ring. this feature gives the bearings their self-aligning property, permitting angular misalignment of the shaft relative to the housing.
Self-aligning ball bearings have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. They are available open or sealed. The bearings are insensitive to angular misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection.
The bearings are self-aligning like spherical roller bearings to accommodate static and dynamic misalignment.
Self-aligning ball bearings generate less friction than other type of rolling bearing, which enables them to run cooler even at high speeds.
Because of low heat generation, the bearing temperature is lower, leading to extended bearing life and maintenance levels.