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.
0.2500 inches nominal bore diameter, unable to decode material, 0.3906 inches nominal overall outside diameter, as-2985,fscm 30003 mfr ref single material response lubrication material document and classification, radial load direction