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Bearing 71928 ACD/P4A (SKF)

Angular contact ball bearings, super-precision 71928 ACD/P4A

Bearing number : 71928 ACD/P4A

Size (mm) : 140x190x24

Brand : SKF

Bore Diameter (mm) : 140

Outer Diameter (mm) : 190

Width (mm) : 24

Bearing dimensions and specification in SKF catalogue:

d - 140 mm

D - 190 mm

B - 24 mm

d₁ - 155.4 mm

d₂ - 155.4 mm

D₁ - 174.6 mm

r_1,2 - min. - 1.5 mm

r_3,4 - min. - 0.6 mm

a - 50.6 mm

d_a - min. - 147 mm

d_b - min. - 147 mm

D_a - max. - 183 mm

D_b - max. - 186 mm

r_a - max. - 1.5 mm

r_b - max. - 0.6 mm

d_n - 159.5 mm

Basic dynamic load rating - C - 90.4 kN

Basic static load rating - C₀ - 110 kN

Fatigue load limit - P_u - 3.6 kN

Limiting speed for grease lubrication - 6000 r/min

Limiting speed for oil lubrication - 9000 mm/min

Ball - D_w - 15.875 mm

Ball - z - 29

G_ref - 21.6 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 - 560 N

Preload class B - G_B - 1120 N

Preload class C - G_C - 2240 N

Preload class D - G_D - 4480 N

Calculation factor - f - 1.29

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 - 348 N/micron

Preload class B - 457 N/micron

Preload class C - 614 N/micron

Preload class D - 841 N/micron

Mass bearing - 1.65 kg

Tags :  SKF , 140x190x24