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Bearing 71911 ACB/P4A (SKF)

Angular contact ball bearings, super-precision 71911 ACB/P4A

Bearing number : 71911 ACB/P4A

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 - 63.94 mm

d₂ - 62.7 mm

D₂ - 73.2 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.3 mm

a - 26 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 - 64.8 mm

Basic dynamic load rating - C - 9.4 kN

Basic static load rating - C₀ - 7.6 kN

Fatigue load limit - P_u - 0.325 kN

Limiting speed for grease lubrication - 20000 r/min

Limiting speed for oil lubrication - 32000 mm/min

Ball - D_w - 5.556 mm

Ball - z - 28

G_ref - 2.58 cm3

Calculation factor - e - 0.68

Calculation factor - Y₂ - 0.87

Calculation factor - Y₀ - 0.38

Calculation factor - X₂ - 0.41

Calculation factor - Y₁ - 0.92

Calculation factor - Y₂ - 1.41

Calculation factor - Y₀ - 0.76

Calculation factor - X₂ - 0.67

Preload class A - G_A - 55 N

Preload class B - G_B - 110 N

Preload class C - G_C - 330 N

Calculation factor - f - 1.09

Calculation factor - f₁ - 0.99

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.02

Calculation factor - f_2C - 1.07

Calculation factor - f_HC - 1

Preload class A - 88 N/micron

Preload class B - 114 N/micron

Preload class C - 172 N/micron

Mass bearing - 0.182 kg

Tags :  SKF , 55x80x13