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Bearing 7008 ACD/HCP4AH (SKF)

Angular contact ball bearings, super-precision 7008 ACD/HCP4AH

Bearing number : 7008 ACD/HCP4AH

Size (mm) : 40x68x15

Brand : SKF

Bore Diameter (mm) : 40

Outer Diameter (mm) : 68

Width (mm) : 15

Bearing dimensions and specification in SKF catalogue:

d - 40 mm

D - 68 mm

B - 15 mm

d₁ - 49.2 mm

d₂ - 49.2 mm

D₁ - 58.8 mm

K - 0.5 mm

C₁ - 8.95 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.3 mm

a - 20.2 mm

d_a - min. - 44.6 mm

d_b - min. - 44.6 mm

D_a - max. - 63.4 mm

D_b - max. - 66 mm

r_a - max. - 1 mm

r_b - max. - 0.3 mm

d_n - 50.8 mm

Basic dynamic load rating - C - 15.9 kN

Basic static load rating - C₀ - 10.4 kN

Fatigue load limit - P_u - 0.44 kN

Limiting speed for grease lubrication - 22000 r/min

Limiting speed for oil lubrication - 34000 mm/min

Ball - D_w - 7.938 mm

Ball - z - 18

G_ref - 2.4 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 - 100 N

Preload class B - G_B - 200 N

Preload class C - G_C - 400 N

Preload class D - G_D - 800 N

Calculation factor - f - 1.06

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 - 107 N/micron

Preload class B - 138 N/micron

Preload class C - 180 N/micron

Preload class D - 238 N/micron

Mass bearing - 0.17 kg

Tags :  SKF , 40x68x15