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.
document id sae-as7949, bearing are prepacked 80% to 100% with lubrication conforming to spec mil-prf-81322 and are equipped with prfe seals, special features, 0.9995 inches minimum and 1.0000 inches maximum bore diameter, bearing,ball airframe,antifriction part name assigned by controlling agency, single row inner ring extended both sides style designator, 0.4370 inches nominal outer ring width