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Bearing W638/4X-2RS1 (SKF)
Deep groove ball bearings W638/4X-2RS1
Bearing number : W638/4X-2RS1
Size (mm) : 4x10x4
Brand : SKF
Bore Diameter (mm) : 4
Outer Diameter (mm) : 10
Width (mm) : 4
Bearing dimensions and specification in SKF catalogue:
d - 4 mm
D - 10 mm
B - 4 mm
C - 4 mm
d1 - 5,9 mm
d2 - – mm
r1 min. - 5,6 mm
r2 min. - 5,6 mm
D1 - 8,8 mm
D2 - 0,2 mm
da min. - 5,8 mm
Da max. - 8,8 mm
ra max. - 0,2 mm
Weight - 0,0014 Kg
Basic dynamic load rating (C) - 0,637 kN
Basic static load rating (C0) - 0,25 kN
Fatigue load limit (Pu) - 0,011
Reference speed - – r/min
Limiting speed - 36000 r/min
Calculation factor (f0) - 12
Calculation factor (kr) - 0,02
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Bore Dia, mm
Outer Dia, mm:
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