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.
0.24985 inches minimum and 0.24990 inches maximum bore diameter, 0.2190 inches nominal overall width, 0.39055 inches minimum and 0.39060 inches maximum overall outside diameter, ground surface finish, abec no. 9p standard tolerance designation