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Bearing NA4909 (NSK)
Needle roller bearings NA4909
Bearing number : NA4909
Size (mm) : 45x68x22
Brand : NSK
Bore Diameter (mm) : 45
Outer Diameter (mm) : 68
Width (mm) : 22
Bearing dimensions and specification in NSK catalogue:
d - 45 mm
Fw - 52 mm
D - 68 mm
B - 22 mm
C - 22 mm
r min. - 0,6 mm
da min. - 49 mm
Da max. - 64 mm
ra max. - 0,6 mm
Weight - 0,28 Kg
Basic dynamic load rating (C) - 41 kN
Basic static load rating (C0) - 67,5 kN
(Grease) Lubrication Speed - 5000 r/min
(Oil) Lubrication Speed - 8000 r/min
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