7204 bw nsk7204BW d 20 mm Bore diameter D 47 mm Outside diameter B 14 mm Width r (min.) 1 mm Chamfer dimension r1 (min.) 0. 6 mm Chamfer dimension Cr 14700 N Basic dynamic load rating C0r 7650 N Basic static load rating Grease 9500 min 1 Grease lubrication Oil (Oil bath) 13000 min 1 Oil bath lubrication a 21. 1 mm Effective load center da (min.) 26 mm Diameter of shaft abutment (min) Da (max.) 41 mm Diameter of housing abutment ra (max.) 1 mm Radius of shaft or