Extreme Upward View Of Blast Furnaces And Structures Of An Abandoned 7222 BW NSK. 7222BW d 110 mm Bore diameter D 200 mm Outside diameter B 38 mm Width r (min.) 2. 1 mm Chamfer dimension r1 (min.) 1. 1 mm Chamfer dimension Cr 169000 N Basic dynamic load rating C0r 144000 N Basic static load rating Grease 2000 min 1 Grease lubrication Oil (Oil bath) 2800 min 1 Oil bath lubrication a 84 mm Effective load center da (min.) 122 mm Diameter of shaft abutment (min) Da (max.) 188 mm Diameter of housing abutment ra (max.) 2 mm Radius of shaft or housing fillet Mass approx. 4. 58 kg Mass approx.