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.
0.2190 inches nominal overall width, abec no. 9p standard tolerance designation, ground surface finish, 0.24980 inches minimum and 0.24985 inches maximum bore diameter, counterbored outer rings, non-separable, face to face mounting style designator