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Bearing 71904 CE/P4A (SKF)

Angular contact ball bearings, super-precision 71904 CE/P4A

Bearing number : 71904 CE/P4A

Size (mm) : 20x37x9

Brand : SKF

Bore Diameter (mm) : 20

Outer Diameter (mm) : 37

Width (mm) : 9

Bearing dimensions and specification in SKF catalogue:

d - 20 mm

D - 37 mm

B - 9 mm

d₁ - 25.65 mm

d₂ - 24.4 mm

D₁ - 31.49 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.15 mm

a - 8.5 mm

d_a - min. - 22 mm

d_b - min. - 22 mm

D_a - max. - 35 mm

D_b - max. - 36.2 mm

r_a - max. - 0.3 mm

r_b - max. - 0.15 mm

d_n - 26.7 mm

Basic dynamic load rating - C - 4.9 kN

Basic static load rating - C₀ - 2.4 kN

Fatigue load limit - P_u - 0.102 kN

Limiting speed for grease lubrication - 56000 r/min

Limiting speed for oil lubrication - 88000 mm/min

Ball - D_w - 4.762 mm

Ball - z - 14

G_ref - 0.5 cm3

Calculation factor - f₀ - 7.8

Preload class A - G_A - 26 N

Preload class B - G_B - 79 N

Preload class C - G_C - 157 N

Calculation factor - f - 1.04

Calculation factor - f₁ - 1

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.04

Calculation factor - f_2C - 1.08

Calculation factor - f_HC - 1

Preload class A - 18 N/micron

Preload class B - 28 N/micron

Preload class C - 39 N/micron

Mass bearing - 0.036 kg

Tags :  SKF , 20x37x9