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Bearing 71917 ACE/P4A (SKF)

Angular contact ball bearings, super-precision 71917 ACE/P4A

Bearing number : 71917 ACE/P4A

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 - 96 mm

d₂ - 92.9 mm

D₁ - 109.22 mm

r_1,2 - min. - 1.1 mm

r_3,4 - min. - 0.6 mm

a - 34.1 mm

d_a - min. - 91 mm

d_b - min. - 88.2 mm

D_a - max. - 114 mm

D_b - max. - 116.8 mm

r_a - max. - 1 mm

r_b - max. - 0.6 mm

d_n - 98.6 mm

Basic dynamic load rating - C - 28.1 kN

Basic static load rating - C₀ - 22 kN

Fatigue load limit - P_u - 0.9 kN

Limiting speed for grease lubrication - 13700 r/min

Limiting speed for oil lubrication - 21000 mm/min

Ball - D_w - 11.112 mm

Ball - z - 23

G_ref - 7 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 - 255 N

Preload class B - G_B - 765 N

Preload class C - G_C - 1529 N

Calculation factor - f - 1.16

Calculation factor - f₁ - 0.99

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.04

Calculation factor - f_2C - 1.07

Calculation factor - f_HC - 1

Preload class A - 157 N/micron

Preload class B - 237 N/micron

Preload class C - 311 N/micron

Mass bearing - 0.5 kg

Tags :  SKF , 85x120x18