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-23827 mil spec single material response lubrication material document and classification, 5.9996 inches minimum and 6.0000 inches maximum overall outside diameter, 1.1260 inches minimum and 1.1560 inches maximum overall width, counterbored outer rings, non-separable, back to back mounting style designator, unable to decode material