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