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.
15.1 degrees nominal contact angle, angular load direction, medium bearing preload designation, 0.4722 inches minimum and 0.4724 inches maximum bore diameter, 9.0 pounds minimum and 15.0 pounds maximum bearing preload rating