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Bearing 71811 CD/HCP4 (SKF)

Angular contact ball bearings, super-precision 71811 CD/HCP4

Bearing number : 71811 CD/HCP4

Size (mm) : 55x72x9

Brand : SKF

Bore Diameter (mm) : 55

Outer Diameter (mm) : 72

Width (mm) : 9

Bearing dimensions and specification in SKF catalogue:

d - 55 mm

D - 72 mm

B - 9 mm

d₁ - 60.7 mm

d₂ - 60.7 mm

D₁ - 66.5 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.15 mm

a - 13 mm

d_a - min. - 57 mm

d_b - min. - 57 mm

D_a - max. - 70 mm

D_b - max. - 71.2 mm

r_a - max. - 0.3 mm

r_b - max. - 0.15 mm

d_n - 61.3 mm

Basic dynamic load rating - C - 10.1 kN

Basic static load rating - C₀ - 10.8 kN

Fatigue load limit - P_u - 0.455 kN

Limiting speed for grease lubrication - 22000 r/min

Limiting speed for oil lubrication - 32000 mm/min

Ball - D_w - 4.762 mm

Ball - z - 29

G_ref - 0.88 cm3

Calculation factor - f₀ - 17.1

Preload class A - G_A - 55 N

Preload class B - G_B - 165 N

Preload class C - G_C - 330 N

Calculation factor - f - 1.27

Calculation factor - f₁ - 1

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.1

Calculation factor - f_2C - 1.18

Calculation factor - f_HC - 1.02

Preload class A - 59 N/micron

Preload class B - 101 N/micron

Preload class C - 150 N/micron

Mass bearing - 0.073 kg

Tags :  SKF , 55x72x9