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.
1.0 pounds nominal bearing preload rating, light bearing preload designation, 0.2500 inches nominal bore diameter, radial load direction, 0.0005 inches minimum radial and 0.0008 inches maximum radial internal clearance