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Bearing 6903NR (NSK)
Deep groove ball bearings 6903NR
Bearing number : 6903NR
Size (mm) : 17x30x7
Brand : NSK
Bore Diameter (mm) : 17
Outer Diameter (mm) : 30
Width (mm) : 7
Bearing dimensions and specification in NSK catalogue:
d - 17 mm
D - 30 mm
B - 7 mm
C - 7 mm
rn - 0,3 mm
a - 1,3 mm
b - 0,95 mm
f - 0,85 mm
r min. - 0,3 mm
r0 max. - 0,25 mm
D1 - 28,7 mm
D2 - 32,8 mm
da min. - 19 mm
da max - 19,5 mm
Da max. - 28 mm
ra max. - 0,3 mm
Weight - 0,017 Kg
Basic dynamic load rating (C) - 4,6 kN
Basic static load rating (C0) - 2,55 kN
(Grease) Lubrication Speed - 24 000 r/min
(Oil) Lubrication Speed - 28 000 r/min
Calculation factor (f0) - 14,7
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