SKF 7009ACB/HCP4A bearing

Angular contact ball bearings, super-precision 7009 ACB/HCP4A

Bearing number : 7009 ACB/HCP4A

Size (mm) : 45x75x16

Brand : SKF

Bore Diameter (mm) : 45

Outer Diameter (mm) : 75

Width (mm) : 16

Bearing dimensions and specification in SKF catalogue:

d - 45 mm

D - 75 mm

B - 16 mm

d₁ - 56.44 mm

d₂ - 55.17 mm

D₂ - 65.58 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.6 mm

a - 22.1 mm

d_a - min. - 49.6 mm

d_b - min. - 49.6 mm

D_a - max. - 70.4 mm

D_b - max. - 71.8 mm

r_a - max. - 1 mm

r_b - max. - 0.6 mm

d_n - 57.2 mm

Basic dynamic load rating - C - 9 kN

Basic static load rating - C₀ - 6.8 kN

Fatigue load limit - P_u - 0.285 kN

Limiting speed for grease lubrication - 28000 r/min

Limiting speed for oil lubrication - 43000 mm/min

Ball - D_w - 5.556 mm

Ball - z - 25

G_ref - 2.93 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 - 54 N

Preload class B - G_B - 110 N

Preload class C - G_C - 330 N

Calculation factor - f - 1.05

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_HC - 1.01

Preload class A - 91 N/micron

Preload class B - 115 N/micron

Preload class C - 175 N/micron

Mass bearing - 0.249 kg