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Bearing 7011 ACD/P4A (SKF)

Angular contact ball bearings, super-precision 7011 ACD/P4A

Bearing number : 7011 ACD/P4A

Size (mm) : 55x90x18

Brand : SKF

Bore Diameter (mm) : 55

Outer Diameter (mm) : 90

Width (mm) : 18

Bearing dimensions and specification in SKF catalogue:

d - 55 mm

D - 90 mm

B - 18 mm

d₁ - 65.8 mm

d₂ - 65.8 mm

D₁ - 79.2 mm

r_1,2 - min. - 1.1 mm

r_3,4 - min. - 0.6 mm

a - 26 mm

d_a - min. - 61 mm

d_b - min. - 61 mm

D_a - max. - 84 mm

D_b - max. - 86.8 mm

r_a - max. - 1 mm

r_b - max. - 0.6 mm

d_n - 68.1 mm

Basic dynamic load rating - C - 37.1 kN

Basic static load rating - C₀ - 31 kN

Fatigue load limit - P_u - 1.3 kN

Limiting speed for grease lubrication - 14000 r/min

Limiting speed for oil lubrication - 22000 mm/min

Ball - D_w - 11.112 mm

Ball - z - 18

G_ref - 5.1 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 - 230 N

Preload class B - G_B - 460 N

Preload class C - G_C - 920 N

Preload class D - G_D - 1840 N

Calculation factor - f - 1.1

Calculation factor - f₁ - 0.99

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.02

Calculation factor - f_2C - 1.05

Calculation factor - f_2D - 1.08

Calculation factor - f_HC - 1

Preload class A - 159 N/micron

Preload class B - 207 N/micron

Preload class C - 275 N/micron

Preload class D - 372 N/micron

Mass bearing - 0.378 kg

Tags :  SKF , 55x90x18