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 5920-01-598-0219
NSN 5930-01-359-8864
NSN 5930-00-690-1392
NSN 5996-00-618-0050
NSN 5895-01-069-1345
NSN 5996-00-481-7119
NSN 5998-01-592-1701
NSN 5999-00-917-6951
NSN 5990-00-452-9194
NSN 5998-01-620-2136
NSN 5855-00-361-0167
NSN 5950-01-381-3959