Bearing W 638 (SKF)

Deep groove ball bearings, stainless steel W 638

Bearing number : W 638

Size (mm) : 8x28x9

Brand : SKF

Bore Diameter (mm) : 8

Outer Diameter (mm) : 28

Width (mm) : 9

Bearing dimensions and specification in SKF catalogue:

d - 8 mm

D - 28 mm

B - 9 mm

d₂ - - 13.9 mm

D₂ - - 22.38 mm

r_1,2 - min. - 0.3 mm

d_a - min. - 10 mm

d_a - max. - 13.8 mm

D_a - max. - 26 mm

r_a - max. - 0.3 mm

Basic dynamic load rating - C - 4 kN

Basic static load rating - C₀ - 2 kN

Fatigue load limit - P_u - 0.083 kN

Reference speed - 67000 r/min

Limiting speed - 40000 r/min

Calculation factor - k_r - 0.035

Calculation factor - f₀ - 12.4

Mass bearing - 0.0273 kg

Tags : SKF , 8x28x9

Designation

Bore Dia, mm

Outer Dia, mm: