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, angular load direction, 0.6250 inches nominal bore diameter, 5.0 pounds nominal bearing preload rating, mis-30520,fscm 19135 mfr ref single material response lubrication material document and classification