1200 Economy Self Aligning Ball Bearing With a Cylindrical Bore 10x30x9mm

Self Aligning Ball Bearings: 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.