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.
0.0007 inches minimum radial and 0.0012 inches maximum radial internal clearance, 3.0 pounds nominal bearing preload rating, light bearing preload designation, angular load direction, 0.3750 inches nominal bore diameter