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.
standard internal fit-up designation, 15.0 pounds nominal bearing preload rating, beacon 325,humble oil and refining co mfr ref single material response lubrication material document and classification, angular load direction, 20.00 millimeters nominal bore diameter