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.
5.0 pounds nominal bearing preload rating, as modified by bearing preload rating departure from cited designator, unable to decode material, 115 type and 50 grade nondefinitive spec/std data, radial load direction