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Bearing 71905 CD/P4A (SKF)

Angular contact ball bearings, super-precision 71905 CD/P4A

Bearing number : 71905 CD/P4A

Size (mm) : 25x42x9

Brand : SKF

Bore Diameter (mm) : 25

Outer Diameter (mm) : 42

Width (mm) : 9

Bearing dimensions and specification in SKF catalogue:

d - 25 mm

D - 42 mm

B - 9 mm

d₁ - 30.6 mm

d₂ - 30.6 mm

D₁ - 36.4 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.2 mm

a - 9 mm

d_a - min. - 27 mm

d_b - min. - 27 mm

D_a - max. - 40 mm

D_b - max. - 40.6 mm

r_a - max. - 0.3 mm

r_b - max. - 0.2 mm

d_n - 31.8 mm

Basic dynamic load rating - C - 6.8 kN

Basic static load rating - C₀ - 4 kN

Fatigue load limit - P_u - 0.17 kN

Limiting speed for grease lubrication - 36000 r/min

Limiting speed for oil lubrication - 53000 mm/min

Ball - D_w - 4.762 mm

Ball - z - 18

G_ref - 0.54 cm3

Calculation factor - f₀ - 10.2

Preload class A - G_A - 25 N

Preload class B - G_B - 50 N

Preload class C - G_C - 100 N

Preload class D - G_D - 200 N

Calculation factor - f - 1.07

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 - 24 N/micron

Preload class B - 32 N/micron

Preload class C - 44 N/micron

Preload class D - 62 N/micron

Mass bearing - 0.042 kg

Tags :  SKF , 25x42x9