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.
0.0007 inches minimum radial and 0.0010 inches maximum radial internal clearance, radial load direction, 0.2498 inches nominal bore diameter, aligning ring features provided, aim9e/j/p end item identification