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, mil-g-81322 mil spec single material response lubrication material document and classification, 0.2498 inches minimum and 0.2500 inches maximum bore diameter, 0.0008 inches minimum radial and 0.0013 inches maximum radial internal clearance, c calibration designator