Two single row annular ball bearings selected dimensionally to be a matched pair or set. The ring faces have been specially ground to specified offsets that will produce predetermined preload when mounted. May include a single row angular contact bearing with faces specially ground for duplex mounting.
radial load direction, mil-g-25537 mil spec single material response lubrication material document and classification, standard internal fit-up designation, contact bearing seal type, 0.6247 inches minimum and 0.6250 inches maximum bore diameter