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Bearing 71903 ACE/HCP4AH (SKF)

Angular contact ball bearings, super-precision 71903 ACE/HCP4AH

Bearing number : 71903 ACE/HCP4AH

Size (mm) : 17x30x7

Brand : SKF

Bore Diameter (mm) : 17

Outer Diameter (mm) : 30

Width (mm) : 7

Bearing dimensions and specification in SKF catalogue:

d - 17 mm

D - 30 mm

B - 7 mm

d₁ - 21.1 mm

d₂ - 20.1 mm

D₁ - 25.9 mm

K - 0.5 mm

C₁ - 4.35 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.15 mm

a - 9.6 mm

d_a - min. - 19 mm

d_b - min. - 19 mm

D_a - max. - 28 mm

D_b - max. - 29.2 mm

r_a - max. - 0.3 mm

r_b - max. - 0.15 mm

d_n - 22 mm

Basic dynamic load rating - C - 3.2 kN

Basic static load rating - C₀ - 1.5 kN

Fatigue load limit - P_u - 0.063 kN

Limiting speed for grease lubrication - 75000 r/min

Limiting speed for oil lubrication - 115000 mm/min

Ball - D_w - 3.969 mm

Ball - z - 13

G_ref - 0.2 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 - 29 N

Preload class B - G_B - 87 N

Preload class C - G_C - 175 N

Calculation factor - f - 1.05

Calculation factor - f₁ - 0.98

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.04

Calculation factor - f_2C - 1.08

Calculation factor - f_HC - 1.01

Preload class A - 39 N/micron

Preload class B - 61 N/micron

Preload class C - 79 N/micron

Mass bearing - 0.014 kg

Tags :  SKF , 17x30x7