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.
cbc calibration designator, 0.3904 inches minimum and 0.3906 inches maximum overall outside diameter, 0.2498 inches minimum and 0.2500 inches maximum bore diameter, radial load direction, unable to decode material