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 5985-01-131-7137
NSN 6650-01-158-5099
NSN 7035-00-782-7046
NSN 6105-01-339-9275
NSN 6685-00-122-4913
NSN 6645-01-316-7456
NSN 6150-01-346-9284
NSN 5975-00-566-4232
NSN 6320-00-857-4073
NSN 5855-01-618-1921
NSN 5905-00-173-2813
NSN 6220-01-487-3904