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Bearing 71910 ACB/P4A (SKF)

Angular contact ball bearings, super-precision 71910 ACB/P4A

Bearing number : 71910 ACB/P4A

Size (mm) : 50x72x12

Brand : SKF

Bore Diameter (mm) : 50

Outer Diameter (mm) : 72

Width (mm) : 12

Bearing dimensions and specification in SKF catalogue:

d - 50 mm

D - 72 mm

B - 12 mm

d₁ - 57.95 mm

d₂ - 56.9 mm

D₂ - 66.04 mm

r_1,2 - min. - 0.6 mm

r_3,4 - min. - 0.3 mm

a - 23.2 mm

d_a - min. - 53.2 mm

d_b - min. - 53.2 mm

D_a - max. - 68.8 mm

D_b - max. - 70 mm

r_a - max. - 0.6 mm

r_b - max. - 0.3 mm

d_n - 58.7 mm

Basic dynamic load rating - C - 7.3 kN

Basic static load rating - C₀ - 5.8 kN

Fatigue load limit - P_u - 0.25 kN

Limiting speed for grease lubrication - 22000 r/min

Limiting speed for oil lubrication - 36000 mm/min

Ball - D_w - 4.762 mm

Ball - z - 29

G_ref - 1.89 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 - 43 N

Preload class B - G_B - 86 N

Preload class C - G_C - 260 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 - 79 N/micron

Preload class B - 102 N/micron

Preload class C - 155 N/micron

Mass bearing - 0.134 kg

Tags :  SKF , 50x72x12