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.
mil-g-81322 mil spec single material response lubrication material document and classification, 44.00 millimeters nominal overall width, 90.000 millimeters nominal bore diameter, angular load direction, 140.00 millimeters nominal overall outside diameter