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.
contact bearing seal type, mil-g-81322 mil spec single material response lubrication material document and classification, 0.0003 inches minimum radial and 0.0009 inches maximum radial internal clearance, 8.0 millimeters nominal bore diameter, radial load direction