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Bearing W639/3-2Z (SKF)
Deep groove ball bearings W639/3-2Z
Bearing number : W639/3-2Z
Size (mm) : 3x8x4
Brand : SKF
Bore Diameter (mm) : 3
Outer Diameter (mm) : 8
Width (mm) : 4
Bearing dimensions and specification in SKF catalogue:
d - 3 mm
D - 8 mm
B - 4 mm
C - 4 mm
d1 - 4,3 mm
d2 - – mm
r1 min. - 4,2 mm
r2 min. - 4,2 mm
D1 - 7,3 mm
D2 - 0,15 mm
da min. - 4,3 mm
Da max. - 7,3 mm
ra max. - 0,15 mm
Weight - 0,00083 Kg
Basic dynamic load rating (C) - 0,319 kN
Basic static load rating (C0) - 0,09 kN
Fatigue load limit (Pu) - 0,004
Reference speed - 150000 r/min
Limiting speed - 75000 r/min
Calculation factor (f0) - 6,1
Calculation factor (kr) - 0,025
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Bore Dia, mm
Outer Dia, mm:
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