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Bearing 71918 ACB/P4AL (SKF)

Angular contact ball bearings, super-precision 71918 ACB/P4AL

Bearing number : 71918 ACB/P4AL

Size (mm) : 90x125x18

Brand : SKF

Bore Diameter (mm) : 90

Outer Diameter (mm) : 125

Width (mm) : 18

Bearing dimensions and specification in SKF catalogue:

d - 90 mm

D - 125 mm

B - 18 mm

d₁ - 103 mm

d₂ - 101.4 mm

D₂ - 115 mm

b - 2.2 mm

C₁ - 9.3 mm

C₂ - 4.5 mm

C₃ - 2.9 mm

r_1,2 - min. - 1.1 mm

r_3,4 - min. - 0.6 mm

a - 39 mm

d_a - min. - 96 mm

d_b - min. - 96 mm

D_a - max. - 119 mm

D_b - max. - 121.8 mm

r_a - max. - 1 mm

r_b - max. - 0.6 mm

d_n - 103.9 mm

Basic dynamic load rating - C - 16.8 kN

Basic static load rating - C₀ - 16.6 kN

Fatigue load limit - P_u - 0.68 kN

Limiting speed for grease lubrication - 12000 r/min

Limiting speed for oil lubrication - 19000 mm/min

Ball - D_w - 7.144 mm

Ball - z - 36

G_ref - 7.37 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 - 100 N

Preload class B - G_B - 200 N

Preload class C - G_C - 600 N

Calculation factor - f - 1.12

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 - 139 N/micron

Preload class B - 178 N/micron

Preload class C - 270 N/micron

Mass bearing - 0.59 kg

Tags :  SKF , 90x125x18