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Bearing 71906 ACB/P4A (SKF)

Angular contact ball bearings, super-precision 71906 ACB/P4A

Bearing number : 71906 ACB/P4A

Size (mm) : 30x47x9

Brand : SKF

Bore Diameter (mm) : 30

Outer Diameter (mm) : 47

Width (mm) : 9

Bearing dimensions and specification in SKF catalogue:

d - 30 mm

D - 47 mm

B - 9 mm

d₁ - 35.95 mm

d₂ - 35.1 mm

D₂ - 43 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.15 mm

a - 16.5 mm

d_a - min. - 32 mm

d_b - min. - 32 mm

D_a - max. - 45 mm

D_b - max. - 46.2 mm

r_a - max. - 0.3 mm

r_b - max. - 0.15 mm

d_n - 36.6 mm

Basic dynamic load rating - C - 4.6 kN

Basic static load rating - C₀ - 3 kN

Fatigue load limit - P_u - 0.127 kN

Limiting speed for grease lubrication - 36000 r/min

Limiting speed for oil lubrication - 56000 mm/min

Ball - D_w - 3.969 mm

Ball - z - 22

G_ref - 0.72 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 - 27 N

Preload class B - G_B - 54 N

Preload class C - G_C - 160 N

Calculation factor - f - 1.07

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 - 53 N/micron

Preload class B - 68 N/micron

Preload class C - 102 N/micron

Mass bearing - 0.047 kg

Tags :  SKF , 30x47x9