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Bearing 71910 ACD/HCP4A (SKF)

Angular contact ball bearings, super-precision 71910 ACD/HCP4A

Bearing number : 71910 ACD/HCP4A

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 - 57.1 mm

d₂ - 57.1 mm

D₁ - 64.9 mm

r_1,2 - min. - 0.6 mm

r_3,4 - min. - 0.3 mm

a - 20.3 mm

d_a - min. - 53.2 mm

d_b - min. - 53.2 mm

D_a - max. - 68.8 mm

D_b - max. - 70.6 mm

r_a - max. - 0.6 mm

r_b - max. - 0.3 mm

d_n - 58.7 mm

Basic dynamic load rating - C - 12.7 kN

Basic static load rating - C₀ - 9.8 kN

Fatigue load limit - P_u - 0.415 kN

Limiting speed for grease lubrication - 19000 r/min

Limiting speed for oil lubrication - 30000 mm/min

Ball - D_w - 6.35 mm

Ball - z - 25

G_ref - 1.74 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 - 80 N

Preload class B - G_B - 160 N

Preload class C - G_C - 320 N

Preload class D - G_D - 640 N

Calculation factor - f - 1.13

Calculation factor - f₁ - 0.98

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.07

Calculation factor - f_2C - 1.12

Calculation factor - f_2D - 1.17

Calculation factor - f_HC - 1.04

Preload class A - 117 N/micron

Preload class B - 152 N/micron

Preload class C - 200 N/micron

Preload class D - 266 N/micron

Mass bearing - 0.119 kg

Tags :  SKF , 50x72x12