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Bearing 71911 CD/HCP4AL (SKF)

Angular contact ball bearings, super-precision 71911 CD/HCP4AL

Bearing number : 71911 CD/HCP4AL

Size (mm) : 55x80x13

Brand : SKF

Bore Diameter (mm) : 55

Outer Diameter (mm) : 80

Width (mm) : 13

Bearing dimensions and specification in SKF catalogue:

d - 55 mm

D - 80 mm

B - 13 mm

d₁ - 62.7 mm

d₂ - 62.7 mm

D₁ - 72.3 mm

b - 2.2 mm

C₁ - 6.5 mm

C₂ - 3.2 mm

C₃ - 2 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.3 mm

a - 15.6 mm

d_a - min. - 59.6 mm

d_b - min. - 59.6 mm

D_a - max. - 75.4 mm

D_b - max. - 78 mm

r_a - max. - 1 mm

r_b - max. - 0.3 mm

d_n - 64.7 mm

Basic dynamic load rating - C - 19.5 kN

Basic static load rating - C₀ - 14.6 kN

Fatigue load limit - P_u - 0.62 kN

Limiting speed for grease lubrication - 19000 r/min

Limiting speed for oil lubrication - 30000 mm/min

Ball - D_w - 7.938 mm

Ball - z - 23

G_ref - 2.49 cm3

Calculation factor - f₀ - 10.4

Preload class A - G_A - 70 N

Preload class B - G_B - 140 N

Preload class C - G_C - 280 N

Preload class D - G_D - 560 N

Calculation factor - f - 1.15

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 - 54 N/micron

Preload class B - 72 N/micron

Preload class C - 99 N/micron

Preload class D - 140 N/micron

Mass bearing - 0.152 kg

Tags :  SKF , 55x80x13