Tapered roller bearings 30228
Bearing number : 30228
Size (mm) : 140x250x45.75 Brand : NTN d (mm) : 140 D (mm) : 250 B (mm) : 45,75 Bearing dimensions and specification in brand catalogue : d - 140 mm D - 250 mm T - 45,75 mm B - 42 mm C - 36 mm ra1 max. - 2,5 mm a - 47,5 mm r min. - 3 mm r1 min. - 3 mm da min. - 158 mm Da min - 219 mm Da max. - 236 mm db max. - 163 mm Db min. - 237 mm ra max. - 2,5 mm Sa - 7 mm Sb - 9,5 mm Weight - 8,37 Kg Basic dynamic load rating (C) - 375 kN Basic static load rating (C0) - 485 kN (Grease) Lubrication Speed - 1 400 r/min (Oil) Lubrication Speed - 1 900 r/min Calculation factor (e) - 0,43 Calculation factor (Y0) - 0,77 Calculation factor (Y2) - 1,39
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