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-l-23699 mil spec single material response lubrication material document and classification, 120.0 millimeters nominal bore diameter, radial load direction, 28.0 radians minimum and 32.0 radians maximum contact angle, 215.0 millimeters nominal overall outside diameter