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