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.
mil-s-6758 cond 2 mil spec single material response overall material document and classification, perforation internal surfaces lubrication feature, 1.4370 inches minimum and 1.4380 inches maximum bore diameter, perforation external surface member lubrication feature, 0.9950 inches minimum and 1.0000 inches maximum inner member width