Bearing W 639/3 R-2Z (SKF)

Deep groove ball bearings, stainless steel W 639/3 R-2Z

Bearing number : W 639/3 R-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

d₁ - - 4.35 mm

D₂ - - 7.25 mm

D₃ - 9.5 mm

C - 0.9 mm

r_1,2 - min. - 0.15 mm

d_a - min. - 3.8 mm

r_a - max. - 0.15 mm

Basic dynamic load rating - C - 0.319 kN

Basic static load rating - C₀ - 0.09 kN

Fatigue load limit - P_u - 0.004 kN

Reference speed - 150000 r/min

Limiting speed - 75000 r/min

Calculation factor - k_r - 0.025

Calculation factor - f₀ - 6.1

Mass bearing - 0.00095 kg

Tags : SKF , 3x8x4

Designation

Bore Dia, mm

Outer Dia, mm: