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Bearing 7218 ACD/HCP4A (SKF)

Angular contact ball bearings, super-precision 7218 ACD/HCP4A

Bearing number : 7218 ACD/HCP4A

Size (mm) : 90x160x30

Brand : SKF

Bore Diameter (mm) : 90

Outer Diameter (mm) : 160

Width (mm) : 30

Bearing dimensions and specification in SKF catalogue:

d - 90 mm

D - 160 mm

B - 30 mm

d₁ - 111.6 mm

d₂ - 111.6 mm

D₁ - 138.4 mm

r_1,2 - min. - 2 mm

r_3,4 - min. - 1 mm

a - 44.3 mm

d_a - min. - 101 mm

d_b - min. - 101 mm

D_a - max. - 149 mm

D_b - max. - 154.4 mm

r_a - max. - 2 mm

r_b - max. - 1 mm

d_n - 117.5 mm

Basic dynamic load rating - C - 121 kN

Basic static load rating - C₀ - 106 kN

Fatigue load limit - P_u - 4 kN

Limiting speed for grease lubrication - 9000 r/min

Limiting speed for oil lubrication - 15000 mm/min

Ball - D_w - 22.225 mm

Ball - z - 16

G_ref - 27.765 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 - 750 N

Preload class B - G_B - 1500 N

Preload class C - G_C - 3000 N

Preload class D - G_D - 6000 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 - 1.03

Calculation factor - f_2D - 1.06

Calculation factor - f_HC - 1.01

Preload class A - 303 N/micron

Preload class B - 395 N/micron

Preload class C - 521 N/micron

Preload class D - 702 N/micron

Mass bearing - 1.834 kg

Tags :  SKF , 90x160x30