Double Row Self Aligning Ball Bearings

Double Row Self Aligning Ball Bearing

Like the double row angular contact ball bearing, this bearing is also designed with two rows of balls that rotate within one set of inner and outer rings. The self aligning ball bearing has a normal-looking inner ring with two (2) separate pathways around its perimeter. However, the outer ring is very unconventional in its design in that there is no noticeable ball path in the outer ring. Instead, the inside of the outer ring is a smooth, contoured spherical surface, with a center common to the bearing’s center. This is what gives the bearing its special features. The design allows the bearing to properly operate, even though the bore of the housing (into which the outer ring fits) and the shaft may not be parallel. NTN’s designation for this type of bearing is a 1 or 2 in the first position of a four (4) digit base bearing number.

Examples of the NTN Double Row Self Aligning Bearing Series