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.
acft eng f-101 end item identification, 0.9841 inches minimum and 0.9843 inches maximum bore diameter, radial load direction, 0.0005 inches minimum radial and 0.0011 inches maximum radial internal clearance, 2.4406 inches minimum and 2.4409 inches maximum overall outside diameter