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.
heavy bearing preload designation, 1.5743 inches minimum and 1.5753 inches maximum bore diameter, angular load direction, 270.0 pounds nominal bearing preload rating, mil-g-23827 mil spec single material response lubrication material document and classification