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.
55.0 millimeters nominal bore diameter, 120.0 millimeters nominal overall outside diameter, standard internal fit-up designation, 29.0 millimeters nominal overall width, angular load direction