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.
unable to decode material, 5.0 pounds nominal bearing preload rating, 0.0005 inches minimum radial and 0.0008 inches maximum radial internal clearance, radial load direction, dc 33,fscm 71984 mfr ref single material response lubrication material document and classification