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.
0.0003 inches minimum radial and 0.0008 inches maximum radial internal clearance, 0.8748 inches minimum and 0.8750 inches maximum bore diameter, radial load direction, 4.0 pounds nominal bearing preload rating, mil-l-6085 mil spec single material response lubrication material document and classification