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Bearing NK47/20R+IR42×47×20 (NTN)
Needle roller bearings NK47/20R+IR42×47×20
Bearing number : NK47/20R+IR42×47×20
Size (mm) : 42x57x20
Brand : NTN
Bore Diameter (mm) : 42
Outer Diameter (mm) : 57
Width (mm) : 20
Bearing dimensions and specification in NTN catalogue:
d - 42 mm
F - 47 mm
D - 57 mm
B - 20 mm
C - 20 mm
r min. - 0,3 mm
s - 0,5 mm
da min. - 44 mm
Da max. - 55 mm
ra max. - 0,3 mm
Weight - 0,148 Kg
Basic dynamic load rating (C) - 28,8 kN
Basic static load rating (C0) - 55,5 kN
(Grease) Lubrication Speed - 5 500 r/min
(Oil) Lubrication Speed - 8 500 r/min
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