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.
1.5745 inches minimum and 1.5748 inches maximum bore diameter, angular load direction, utility search & recovery helicopter uh-1n end item identification, 3.1492 inches minimum and 3.1496 inches maximum overall outside diameter, 1.3973 inches minimum and 1.4173 inches maximum overall width