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, 0.4950 inches nominal overall width, unable to decode material, 1.9999 inches minimum and 2.0000 inches maximum overall outside diameter, 1.5624 inches minimum and 1.5625 inches maximum bore diameter