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.
0.00015 inches maximum radial internal clearance, 20.0 millimeters nominal bore diameter, 30.0 pounds nominal bearing preload rating, heavy bearing preload designation, contact bearing seal type