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.
1.8121 inches minimum and 1.8125 inches maximum bore diameter, angular load direction, braycote,3l-38-rp,fscm 98308 mfr ref single material response lubrication material document and classification, 0.0005 inches minimum radial and 0.0015 inches maximum radial internal clearance, 100.0 pounds nominal bearing preload rating