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Bearing 4304 (KOYO)
Deep groove ball bearings 4304
Bearing number : 4304
Size (mm) : 20x52x21
Brand : KOYO
Bore Diameter (mm) : 20
Outer Diameter (mm) : 52
Width (mm) : 21
Bearing dimensions and specification in KOYO catalogue:
d - 20 mm
D - 52 mm
B - 21 mm
C - 21 mm
r min. - 1.1 mm
da min. - 26.5 mm
Da max. - 45.5 mm
ra max. - 1 mm
Weight - 0.227 Kg
Basic dynamic load rating (C) - 19.5 kN
Basic static load rating (C0) - 17.0 kN
(Grease) Lubrication Speed - 8300 r/min
(Oil) Lubrication Speed - 11000 r/min
Calculation factor (f0) - 13.5
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