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, 0.2498 inches minimum and 0.2499 inches maximum bore diameter, aime/j/p end item identification, radial load direction, aligning ring features provided