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.
3.9370 inches nominal overall outside diameter, mil-g-25537 mil spec single material response lubrication material document and classification, 1.3774 inches nominal bore diameter, radial load direction, 0.0048 inches minimum radial and 0.0058 inches maximum radial internal clearance