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.
15.0 degrees minimum and 25.0 degrees maximum contact angle, medium bearing preload designation, 10.0 pounds minimum and 20.0 pounds maximum bearing preload rating, 1.9998 inches minimum and 2.0000 inches maximum bore diameter, c calibration designator