A cylindrical item in which the inner or outer ring turns upon row(s) of hardened ball, bearing which roll on a raceway, thus minimizing friction. These items are characterized by their noncorrosive qualities, lightness of weight, inch dimensions rather than metric, inner rings generally projecting beyond the faces of the outer ring, or a very narrow width inner ring having an outside diameter slightly larger than the bore diameter. Designed primarily for use in aircraft assemblies, such as control systems and surfaces of aircraft. Excludes:bearing,ball,annular.
mil-g-23827 mil spec single material response lubrication material document and classification, 0.4998 inches minimum and 0.5000 inches maximum bore diameter, radial load direction, contact bearing seal type, 0.3700 inches minimum and 0.3750 inches maximum inner ring width