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.
angular load direction, f-16a-b usaf end item identification, dod-g-24508 mil spec single material response lubrication material document and classification, aligning ring features provided, 0.4998 inches minimum and 0.5000 inches maximum bore diameter