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Bearing S71904 CD/HCP4A (SKF)

Angular contact ball bearings, super-precision S71904 CD/HCP4A

Bearing number : S71904 CD/HCP4A

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 - 25.6 mm

d₂ - 25.6 mm

D₂ - 34.15 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.2 mm

a - 8.4 mm

d_a - min. - 22 mm

d_a - max. - 25.1 mm

d_b - min. - 22 mm

d_b - max. - 25.1 mm

D_a - max. - 35 mm

D_b - max. - 35.6 mm

r_a - max. - 0.3 mm

r_b - max. - 0.2 mm

Basic dynamic load rating - C - 6 kN

Basic static load rating - C₀ - 3.2 kN

Fatigue load limit - P_u - 0.137 kN

Limiting speed for grease lubrication - 53000 r/min

Ball - D_w - 4.762 mm

Ball - z - 15

Calculation factor - f₀ - 9.8

Preload class A - G_A - 25 N

Preload class B - G_B - 50 N

Preload class C - G_C - 100 N

Preload class D - G_D - 200 N

Calculation factor - f - 1.05

Calculation factor - f₁ - 1

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.07

Calculation factor - f_2C - 1.12

Calculation factor - f_2D - 1.18

Calculation factor - f_HC - 1.04

Preload class A - 24 N/micron

Preload class B - 32 N/micron

Preload class C - 44 N/micron

Preload class D - 62 N/micron

Mass bearing - 0.033 kg

Tags :  SKF , 20x37x9