Deep groove ball bearings W638/4-2RS1

Bearing number : W638/4-2RS1

Size (mm) : 4x9x4

Brand : SKF

Bore Diameter (mm) : 4

Outer Diameter (mm) : 9

Width (mm) : 4

Bearing dimensions and specification in SKF catalogue:

d - 4 mm

D - 9 mm

B - 4 mm

C - 4 mm

d1 - 5,2 mm

d2 - – mm

r1 min. - 4,8 mm

r2 min. - 4,8 mm

D1 - 8,1 mm

D2 - 0,1 mm

da min. - 5,1 mm

Da max. - 8,2 mm

ra max. - 0,1 mm

Weight - 0,001 Kg

Basic dynamic load rating (C) - 0,364 kN

Basic static load rating (C0) - 0,114 kN

Fatigue load limit (Pu) - 0,005

Reference speed - – r/min

Limiting speed - 40000 r/min

Calculation factor (f0) - 6,5

Calculation factor (kr) - 0,02