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 5905-00-555-1899
NSN 5945-01-608-2409
NSN 6685-00-880-4912
NSN 5835-00-163-1788
NSN 6130-01-226-1416
NSN 5999-00-503-0331
NSN 5965-01-202-1007
NSN 5960-01-570-8605
NSN 6320-01-056-1164
NSN 6145-01-305-3898
NSN 6610-01-380-0315
NSN 5835-01-058-1063