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Bearing S71903 CD/P4A (SKF)

Angular contact ball bearings, super-precision S71903 CD/P4A

Bearing number : S71903 CD/P4A

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 - 20.9 mm

d₂ - 20.9 mm

D₂ - 27.8 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.2 mm

a - 6.7 mm

d_a - min. - 19 mm

d_a - max. - 20.5 mm

d_b - min. - 19 mm

d_b - max. - 20.5 mm

D_a - max. - 28 mm

D_b - max. - 28.6 mm

r_a - max. - 0.3 mm

r_b - max. - 0.2 mm

Basic dynamic load rating - C - 4.2 kN

Basic static load rating - C₀ - 2.1 kN

Fatigue load limit - P_u - 0.088 kN

Limiting speed for grease lubrication - 50000 r/min

Ball - D_w - 3.969 mm

Ball - z - 14

Calculation factor - f₀ - 9.8

Preload class A - G_A - 15 N

Preload class B - G_B - 30 N

Preload class C - G_C - 60 N

Preload class D - G_D - 120 N

Calculation factor - f - 1.05

Calculation factor - f₁ - 1

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.04

Calculation factor - f_2C - 1.09

Calculation factor - f_2D - 1.15

Calculation factor - f_HC - 1

Preload class A - 16 N/micron

Preload class B - 22 N/micron

Preload class C - 30 N/micron

Preload class D - 43 N/micron

Mass bearing - 0.017 kg

Tags :  SKF , 17x30x7