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Bearing 7008 ACB/P4A (SKF)

Angular contact ball bearings, super-precision 7008 ACB/P4A

Bearing number : 7008 ACB/P4A

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 - 50.95 mm

d₂ - 49.87 mm

D₂ - 58.88 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.6 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. - 64.8 mm

r_a - max. - 1 mm

r_b - max. - 0.6 mm

d_n - 51.6 mm

Basic dynamic load rating - C - 6.9 kN

Basic static load rating - C₀ - 5.3 kN

Fatigue load limit - P_u - 0.224 kN

Limiting speed for grease lubrication - 26000 r/min

Limiting speed for oil lubrication - 40000 mm/min

Ball - D_w - 4.762 mm

Ball - z - 26

G_ref - 2.22 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 - 41 N

Preload class B - G_B - 82 N

Preload class C - G_C - 245 N

Calculation factor - f - 1.04

Calculation factor - f₁ - 0.99

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.01

Calculation factor - f_2C - 1.04

Calculation factor - f_HC - 1

Preload class A - 71 N/micron

Preload class B - 92 N/micron

Preload class C - 138 N/micron

Mass bearing - 0.21 kg

Tags :  SKF , 40x68x15