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Bearing 7220 ACD/P4A (SKF)

Angular contact ball bearings, super-precision 7220 ACD/P4A

Bearing number : 7220 ACD/P4A

Size (mm) : 100x180x34

Brand : SKF

Bore Diameter (mm) : 100

Outer Diameter (mm) : 180

Width (mm) : 34

Bearing dimensions and specification in SKF catalogue:

d - 100 mm

D - 180 mm

B - 34 mm

d₁ - 124.7 mm

d₂ - 124.7 mm

D₁ - 155.3 mm

r_1,2 - min. - 2.1 mm

r_3,4 - min. - 1.1 mm

a - 49.9 mm

d_a - min. - 112 mm

d_b - min. - 112 mm

D_a - max. - 168 mm

D_b - max. - 173 mm

r_a - max. - 2 mm

r_b - max. - 1 mm

d_n - 131.4 mm

Basic dynamic load rating - C - 148 kN

Basic static load rating - C₀ - 129 kN

Fatigue load limit - P_u - 4.6 kN

Limiting speed for grease lubrication - 7000 r/min

Limiting speed for oil lubrication - 11000 mm/min

Ball - D_w - 25.4 mm

Ball - z - 15

G_ref - 40.899 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 - 950 N

Preload class B - G_B - 1900 N

Preload class C - G_C - 3800 N

Preload class D - G_D - 7600 N

Calculation factor - f - 1.09

Calculation factor - f₁ - 0.99

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.01

Calculation factor - f_2C - 1.02

Calculation factor - f_2D - 1.05

Calculation factor - f_HC - 1

Preload class A - 296 N/micron

Preload class B - 388 N/micron

Preload class C - 509 N/micron

Preload class D - 685 N/micron

Mass bearing - 3.242 kg

Tags :  SKF , 100x180x34