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-7420 mil spec single material response inner member material document and classification, 71.0 rockwell a minimum and 74.5 rockwell a maximum inner member hardness rating, qq-s-763 fed spec single material response outer race member material document and classification, 0.3530 inches minimum and 0.3610 inches maximum bore diameter, 0.3960 inches minimum and 0.4060 inches maximum inner member width