NU305ET NSK Hotwife Caption Carlporn. NU305ET d 25 mm Bore diameter D 62 mm Outside diameter B 17 mm Width FW 34 mm Raceway diameter of inner ring r (min.) 1. 1 mm Chamfer dimension r1 (min.) 1. 1 mm Chamfer dimension Cr 51000 N Basic dynamic load rating C0r 37500 N Basic static load rating Thermal Speed Rating (Oil bath) 11000 min 1 Oil bath lubrication subject to conditions outlined in ISO 15312 Mechanical (forced circulation oil) 15000 min 1 Properly designed and controlled forced circulation oil lubrication Grease 10000 min 1 Grease lubrication Oil (Oil bath) 12000 min 1 Oil bath lubrication da (min.) 31. 5 mm Diameter of shaft abutment (min) db (min.) 31. 5 mm Diameter of shaft spacer sleeve abutment db (max.) 32 mm Diameter of shaft spacer sleeve abutment dc (min.) 37 mm Diameter of shaft abutment dd (min.) 40 mm Diameter of shaft abutment Da (max.) 55. 5 mm Diameter of housing abutment rb (max.) 1 mm Radius of shaft or housing fillet ra (max.) 1 mm Radius of shaft or housing fillet Mass approx. 0. 237 kg Mass approx.