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Bearing S71902 ACD/P4A (SKF)

Angular contact ball bearings, super-precision S71902 ACD/P4A

Bearing number : S71902 ACD/P4A

Size (mm) : 15x28x7

Brand : SKF

Bore Diameter (mm) : 15

Outer Diameter (mm) : 28

Width (mm) : 7

Bearing dimensions and specification in SKF catalogue:

d - 15 mm

D - 28 mm

B - 7 mm

d₁ - 18.9 mm

d₂ - 18.9 mm

D₂ - 25.8 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.2 mm

a - 8.5 mm

d_a - min. - 17 mm

d_a - max. - 18.5 mm

d_b - min. - 17 mm

d_b - max. - 18.5 mm

D_a - max. - 26 mm

D_b - max. - 26.6 mm

r_a - max. - 0.3 mm

r_b - max. - 0.2 mm

Basic dynamic load rating - C - 3.8 kN

Basic static load rating - C₀ - 1.8 kN

Fatigue load limit - P_u - 0.078 kN

Limiting speed for grease lubrication - 50000 r/min

Ball - D_w - 3.969 mm

Ball - z - 13

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 - 25 N

Preload class B - G_B - 50 N

Preload class C - G_C - 100 N

Preload class D - G_D - 200 N

Calculation factor - f - 1.05

Calculation factor - f₁ - 0.98

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.04

Calculation factor - f_2C - 1.08

Calculation factor - f_2D - 1.14

Calculation factor - f_HC - 1

Preload class A - 40 N/micron

Preload class B - 51 N/micron

Preload class C - 67 N/micron

Preload class D - 88 N/micron

Mass bearing - 0.016 kg

Tags :  SKF , 15x28x7