nup312 et nskNUP312ET d 60 mm Bore diameter D 130 mm Outside diameter B 31 mm Width FW 77 mm Raceway diameter of inner ring r (min.) 2. 1 mm Chamfer dimension r1 (min.) 2. 1 mm Chamfer dimension Cr 184000 N Basic dynamic load rating C0r 157000 N Basic static load rating Thermal Speed Rating (Oil bath) 5600 min 1 Oil bath lubrication subject to conditions outlined in ISO 15312 Mechanical (forced circulation oil) 6700 min 1 Properly designed and controlled forced