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Bearing 7028 ACD/HCP4AL (SKF)

Angular contact ball bearings, super-precision 7028 ACD/HCP4AL

Bearing number : 7028 ACD/HCP4AL

Size (mm) : 140x210x33

Brand : SKF

Bore Diameter (mm) : 140

Outer Diameter (mm) : 210

Width (mm) : 33

Bearing dimensions and specification in SKF catalogue:

d - 140 mm

D - 210 mm

B - 33 mm

d₁ - 161.6 mm

d₂ - 161.6 mm

D₁ - 188.4 mm

b - 3.1 mm

C₁ - 17.9 mm

C₂ - 6.6 mm

C₃ - 5.6 mm

r_1,2 - min. - 2 mm

r_3,4 - min. - 1 mm

a - 57.5 mm

d_a - min. - 149 mm

d_b - min. - 149 mm

D_a - max. - 201 mm

D_b - max. - 205 mm

r_a - max. - 2 mm

r_b - max. - 1 mm

d_n - 166.3 mm

Basic dynamic load rating - C - 146 kN

Basic static load rating - C₀ - 156 kN

Fatigue load limit - P_u - 5.1 kN

Limiting speed for grease lubrication - 7000 r/min

Limiting speed for oil lubrication - 11000 mm/min

Ball - D_w - 22.225 mm

Ball - z - 22

G_ref - 45 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 - 900 N

Preload class B - G_B - 1800 N

Preload class C - G_C - 3600 N

Preload class D - G_D - 7200 N

Calculation factor - f - 1.16

Calculation factor - f₁ - 0.99

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.02

Calculation factor - f_2C - 1.05

Calculation factor - f_2D - 1.08

Calculation factor - f_HC - 1.02

Preload class A - 404 N/micron

Preload class B - 530 N/micron

Preload class C - 702 N/micron

Preload class D - 950 N/micron

Mass bearing - 2.827 kg

Tags :  SKF , 140x210x33