638 bearing 8x28x9

Bearing 638

Deep groove ball bearings 638

Bearing number : 638

Size (mm) : 8x28x9

Bore Diameter (mm) : 8

Outer Diameter (mm) : 28

Width (mm) : 9

Bearing dimensions and specification in catalogue:

d - 8 mm

D - 28 mm

B - 9 mm

C - 9 mm

r min. - 0,3 mm

da min. - 10 mm

Da max. - 26 mm

ra max. - 0,3 mm

Weight - 0,0283 Kg

Basic dynamic load rating (C) - 4,55 kN

Basic static load rating (C0) - 1,97 kN

(Grease) Lubrication Speed - 28 000 r/min

(Oil) Lubrication Speed - 34 000 r/min

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