Bearings Online Catalogue

Home > Bearings Catalogue Online > Angular Contact Ball Bearings

Bearing 708 ACE/P4A (SKF)

Angular contact ball bearings, super-precision 708 ACE/P4A

Bearing number : 708 ACE/P4A

Size (mm) : 8x22x7

Brand : SKF

Bore Diameter (mm) : 8

Outer Diameter (mm) : 22

Width (mm) : 7

Bearing dimensions and specification in SKF catalogue:

d - 8 mm

D - 22 mm

B - 7 mm

d₁ - 12.1 mm

d₂ - 11.5 mm

D₁ - 17.9 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.15 mm

a - 7.1 mm

d_a - min. - 10 mm

d_b - min. - 10 mm

D_a - max. - 20 mm

D_b - max. - 20.6 mm

r_a - max. - 0.3 mm

r_b - max. - 0.15 mm

d_n - 13.3 mm

Basic dynamic load rating - C - 2.3 kN

Basic static load rating - C₀ - 0.765 kN

Fatigue load limit - P_u - 0.032 kN

Limiting speed for grease lubrication - 98000 r/min

Limiting speed for oil lubrication - 150000 mm/min

Ball - D_w - 3.969 mm

Ball - z - 8

G_ref - 0.17 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 - 20 N

Preload class B - G_B - 60 N

Preload class C - G_C - 120 N

Calculation factor - f - 1.02

Calculation factor - f₁ - 0.99

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.03

Calculation factor - f_2C - 1.06

Calculation factor - f_HC - 1

Preload class A - 23 N/micron

Preload class B - 34 N/micron

Preload class C - 45 N/micron

Mass bearing - 0.012 kg

Tags :  SKF , 8x22x7