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.
28.0 rockwell c minimum and 36.0 rockwell c maximum outer race member hardness rating, 55.0 rockwell c minimum and 60.0 rockwell c maximum inner member hardness rating, 0.4010 inches minimum and 0.4060 inches maximum inner member width, bearing,plain,spherical,narrow ring part name assigned by controlling agency, 0.3745 inches minimum and 0.3750 inches maximum bore diameter