Per b-1 engineering
A detachable assembly in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. The item consists of a bored precision ground ball (or spherical plain bearing) around which an outer ring is fitted. The assembly may be either separable or nonseparable. Excludes bearing, plain, rod end and bearing, plain, spherical.
Classification: Spherical roller bearings, single row
NSN 6220-01-522-2729
NSN 6645-01-227-2036
NSN 6650-01-063-1602
NSN 5990-00-223-3258
NSN 5998-01-046-6185
NSN 5998-01-216-8637
NSN 5930-00-931-5402
NSN 6145-00-177-4731
NSN 5855-01-190-7049
NSN 5935-00-076-9389
NSN 5910-00-266-0906
NSN 5935-01-123-9934