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Bearing 7904C (KOYO)
Angular contact ball bearings 7904C
Bearing number : 7904C
Size (mm) : 20x37x9
Brand : KOYO
Bore Diameter (mm) : 20
Outer Diameter (mm) : 37
Width (mm) : 9
Bearing dimensions and specification in KOYO catalogue:
d - 20 mm
D - 37 mm
B - 9 mm
C - 9 mm
Angle (α) - 15 °
a - 8.3 mm
r min. - 0.3 mm
r1 min. - 0.15 mm
da min. - 22.5 mm
Da max. - 34.5 mm
ra max. - 0.3 mm
Weight - 0.035 Kg
(Grease) Lubrication Speed - 30 000 r/min
(Oil) Lubrication Speed - 39 000 r/min
Calculation factor (f0) - 14.9
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