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, 0.0005 inches minimum radial and 0.0015 inches maximum radial internal clearance, 2.0 pounds nominal bearing preload rating, light bearing preload designation, 0.7500 inches nominal bore diameter