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.
c calibration designator, 15.0 degrees minimum and 25.0 degrees maximum contact angle, 2.0000 inches nominal bore diameter, angular load direction, 10.0 pounds minimum and 20.0 pounds maximum bearing preload rating