6905dducm nsk6905DDU d 25 mm Bore diameter D 42 mm Outside diameter B 9 mm Width r (min.) 0. 3 mm Chamfer dimension d1 39 mm Outside diameter of inner ring D1 28. 5 mm Bore diameter of outer ring Cr 7750 N Basic dynamic load rating C0r 4550 N Basic static load rating Grease 10000 min 1 Grease lubrication da (min.) 27 mm Diameter of shaft abutment (min) da (max.) 28. 5 mm Diameter of shaft abutment Da (max.) 40 mm Diameter of housing abutment ra (max.) 0. 3 mm