Home > Bearings Catalogue Online > Deep Groove Ball Bearings 
Bearing 638 DD (NSK)
Deep groove ball bearings 638 DD
Bearing number : 638 DD
Size (mm) : 8x28x9
Brand : NSK
Bore Diameter (mm) : 8
Outer Diameter (mm) : 28
Width (mm) : 9
Bearing dimensions and specification in NSK catalogue:
d - 8 mm
D - 28 mm
B - 9 mm
C - 9 mm
r min. - 0,3 mm
db max. - 12,8 mm
Db min. - 22,8 mm
rb max. - 0,3 mm
Weight - 0,0286 Kg
Basic dynamic load rating (C) - 4,55 kN
Basic static load rating (C0) - 1,97 kN
(Grease) Lubrication Speed - 22 000 r/min
Search bearings
Bore Dia, mm
Outer Dia, mm:
Bearings Catalogue