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Bearing 71917 ACD/HCP4A (SKF)

Angular contact ball bearings, super-precision 71917 ACD/HCP4A

Bearing number : 71917 ACD/HCP4A

Size (mm) : 85x120x18

Brand : SKF

Bore Diameter (mm) : 85

Outer Diameter (mm) : 120

Width (mm) : 18

Bearing dimensions and specification in SKF catalogue:

d - 85 mm

D - 120 mm

B - 18 mm

d₁ - 95.8 mm

d₂ - 95.8 mm

D₁ - 109.2 mm

r_1,2 - min. - 1.1 mm

r_3,4 - min. - 0.6 mm

a - 33 mm

d_a - min. - 91 mm

d_b - min. - 91 mm

D_a - max. - 114 mm

D_b - max. - 116 mm

r_a - max. - 1 mm

r_b - max. - 0.6 mm

d_n - 98.6 mm

Basic dynamic load rating - C - 43.6 kN

Basic static load rating - C₀ - 45.5 kN

Fatigue load limit - P_u - 1.9 kN

Limiting speed for grease lubrication - 11000 r/min

Limiting speed for oil lubrication - 18000 mm/min

Ball - D_w - 11.112 mm

Ball - z - 25

G_ref - 7.2 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 - 270 N

Preload class B - G_B - 540 N

Preload class C - G_C - 1080 N

Preload class D - G_D - 2160 N

Calculation factor - f - 1.2

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 - 238 N/micron

Preload class B - 312 N/micron

Preload class C - 415 N/micron

Preload class D - 565 N/micron

Mass bearing - 0.451 kg

Tags :  SKF , 85x120x18