Bearings Online Catalogue

Home > Bearings Catalogue Online > Angular Contact Ball Bearings

Bearing 71820 ACD/P4 (SKF)

Angular contact ball bearings, super-precision 71820 ACD/P4

Bearing number : 71820 ACD/P4

Size (mm) : 100x125x13

Brand : SKF

Bore Diameter (mm) : 100

Outer Diameter (mm) : 125

Width (mm) : 13

Bearing dimensions and specification in SKF catalogue:

d - 100 mm

D - 125 mm

B - 13 mm

d₁ - 108.2 mm

d₂ - 108.2 mm

D₁ - 117 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.3 mm

a - 32.8 mm

d_a - min. - 104.6 mm

d_b - min. - 104.6 mm

D_a - max. - 120.4 mm

D_b - max. - 123 mm

r_a - max. - 1 mm

r_b - max. - 0.3 mm

d_n - 109.1 mm

Basic dynamic load rating - C - 21.2 kN

Basic static load rating - C₀ - 27.5 kN

Fatigue load limit - P_u - 1.1 kN

Limiting speed for grease lubrication - 8500 r/min

Limiting speed for oil lubrication - 13000 mm/min

Ball - D_w - 7.144 mm

Ball - z - 34

G_ref - 3.2 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 - 190 N

Preload class B - G_B - 570 N

Preload class C - G_C - 1140 N

Calculation factor - f - 1.4

Calculation factor - f₁ - 0.97

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.08

Calculation factor - f_2C - 1.15

Calculation factor - f_HC - 1

Preload class A - 211 N/micron

Preload class B - 335 N/micron

Preload class C - 462 N/micron

Mass bearing - 0.31 kg

Tags :  SKF , 100x125x13