Bearings Online Catalogue

Home > Bearings Catalogue Online > Angular Contact Ball Bearings

Bearing 7008 CD/HCP4A (SKF)

Angular contact ball bearings, super-precision 7008 CD/HCP4A

Bearing number : 7008 CD/HCP4A

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

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.3 mm

a - 14.8 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 - 16.8 kN

Basic static load rating - C₀ - 11 kN

Fatigue load limit - P_u - 0.465 kN

Limiting speed for grease lubrication - 24000 r/min

Limiting speed for oil lubrication - 38000 mm/min

Ball - D_w - 7.938 mm

Ball - z - 18

G_ref - 2.4 cm3

Calculation factor - f₀ - 10

Preload class A - G_A - 60 N

Preload class B - G_B - 120 N

Preload class C - G_C - 240 N

Preload class D - G_D - 480 N

Calculation factor - f - 1.06

Calculation factor - f₁ - 1

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.02

Calculation factor - f_2C - 1.05

Calculation factor - f_2D - 1.09

Calculation factor - f_HC - 1.02

Preload class A - 42 N/micron

Preload class B - 56 N/micron

Preload class C - 76 N/micron

Preload class D - 107 N/micron

Mass bearing - 0.17 kg

Tags :  SKF , 40x68x15