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Bearing 71917 ACB/P4A (SKF)

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

Bearing number : 71917 ACB/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 - 98.2 mm

d₂ - 96.7 mm

D₂ - 110.2 mm

r_1,2 - min. - 1.1 mm

r_3,4 - min. - 0.6 mm

a - 36.3 mm

d_a - min. - 91 mm

d_b - min. - 91 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 - 99.2 mm

Basic dynamic load rating - C - 15.3 kN

Basic static load rating - C₀ - 15.3 kN

Fatigue load limit - P_u - 0.64 kN

Limiting speed for grease lubrication - 13000 r/min

Limiting speed for oil lubrication - 20000 mm/min

Ball - D_w - 6.747 mm

Ball - z - 37

G_ref - 6.46 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 - 93 N

Preload class B - G_B - 185 N

Preload class C - G_C - 560 N

Calculation factor - f - 1.11

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 - 136 N/micron

Preload class B - 174 N/micron

Preload class C - 264 N/micron

Mass bearing - 0.572 kg

Tags :  SKF , 85x120x18