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Bearing 71956 CD/P4A (SKF)

Angular contact ball bearings, super-precision 71956 CD/P4A

Bearing number : 71956 CD/P4A

Size (mm) : 280x380x46

Brand : SKF

Bore Diameter (mm) : 280

Outer Diameter (mm) : 380

Width (mm) : 46

Bearing dimensions and specification in SKF catalogue:

d - 280 mm

D - 380 mm

B - 46 mm

d₁ - 311.8 mm

d₂ - 311.8 mm

D₁ - 348.2 mm

r_1,2 - min. - 2.1 mm

r_3,4 - min. - 1.1 mm

a - 67.4 mm

d_a - min. - 291 mm

d_b - min. - 291 mm

D_a - max. - 369 mm

D_b - max. - 374 mm

r_a - max. - 2 mm

r_b - max. - 1 mm

d_n - 319.7 mm

Basic dynamic load rating - C - 291 kN

Basic static load rating - C₀ - 455 kN

Fatigue load limit - P_u - 10.6 kN

Limiting speed for grease lubrication - 3200 r/min

Limiting speed for oil lubrication - 4800 mm/min

Ball - D_w - 30.162 mm

Ball - z - 31

G_ref - 159 cm3

Calculation factor - f₀ - 16.7

Preload class A - G_A - 1090 N

Preload class B - G_B - 2180 N

Preload class C - G_C - 4360 N

Preload class D - G_D - 8720 N

Calculation factor - f - 1.27

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 - 266 N/micron

Preload class B - 363 N/micron

Preload class C - 509 N/micron

Preload class D - 741 N/micron

Mass bearing - 12.9 kg

Tags :  SKF , 280x380x46