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Bearing 709 ACE/HCP4A (SKF)

Angular contact ball bearings, super-precision 709 ACE/HCP4A

Bearing number : 709 ACE/HCP4A

Size (mm) : 9x24x7

Brand : SKF

Bore Diameter (mm) : 9

Outer Diameter (mm) : 24

Width (mm) : 7

Bearing dimensions and specification in SKF catalogue:

d - 9 mm

D - 24 mm

B - 7 mm

d₁ - 13.6 mm

d₂ - 13 mm

D₁ - 19.4 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.15 mm

a - 7.4 mm

d_a - min. - 11 mm

d_b - min. - 11 mm

D_a - max. - 22 mm

D_b - max. - 22.6 mm

r_a - max. - 0.3 mm

r_b - max. - 0.15 mm

d_n - 14.8 mm

Basic dynamic load rating - C - 2.5 kN

Basic static load rating - C₀ - 0.9 kN

Fatigue load limit - P_u - 0.038 kN

Limiting speed for grease lubrication - 106000 r/min

Limiting speed for oil lubrication - 165000 mm/min

Ball - D_w - 3.969 mm

Ball - z - 9

G_ref - 0.19 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 - 23 N

Preload class B - G_B - 65 N

Preload class C - G_C - 130 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 - 1.01

Preload class A - 29 N/micron

Preload class B - 42 N/micron

Preload class C - 55 N/micron

Mass bearing - 0.013 kg

Tags :  SKF , 9x24x7