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.
lw155 howitzer end item identification, 4.0 millimeters nominal bore diameter, 14.0 millimeters nominal overall width, split bearing intended for the retention of grease and is supplied in a prefinished condition; reduces friction and wear of the working journal, with marginal lubrication functional description, bearing, plain part name assigned by controlling agency