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.
0.24995 inches minimum and 0.25000 inches maximum overall outside diameter, ground surface finish, 0.2190 inches nominal overall width, 0.39040 inches minimum and 0.39045 inches maximum bore diameter, abec no. 9p standard tolerance designation