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.
abec no. 9p standard tolerance designation, 0.39055 inches minimum and 0.39060 inches maximum overall outside diameter, 0.2190 inches nominal overall width, 0.24990 inches minimum and 0.24995 inches maximum bore diameter, ground surface finish