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.
unable to decode material document and classification, 1.9994 inches minimum and 2.0000 inches maximum bore diameter, 0.4850 inches minimum and 0.5000 inches maximum overall width, 2.4995 inches minimum and 2.5000 inches maximum overall outside diameter, mil-g-21164 mil spec single material response lubrication material document and classification