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Bearing 71968 ACDMA/P4A (SKF)

Angular contact ball bearings, super-precision 71968 ACDMA/P4A

Bearing number : 71968 ACDMA/P4A

Size (mm) : 340x460x56

Brand : SKF

Bore Diameter (mm) : 340

Outer Diameter (mm) : 460

Width (mm) : 56

Bearing dimensions and specification in SKF catalogue:

d - 340 mm

D - 460 mm

B - 56 mm

d₁ - 377 mm

d₂ - 377 mm

D₁ - 423 mm

r_1,2 - min. - 3 mm

r_3,4 - min. - 1.1 mm

a - 121.6 mm

d_a - min. - 353 mm

d_b - min. - 353 mm

D_a - max. - 445 mm

D_b - max. - 454 mm

r_a - max. - 2.5 mm

r_b - max. - 1 mm

d_n - 387 mm

Basic dynamic load rating - C - 364 kN

Basic static load rating - C₀ - 640 kN

Fatigue load limit - P_u - 13.4 kN

Limiting speed for grease lubrication - 2000 r/min

Limiting speed for oil lubrication - 3200 mm/min

Ball - D_w - 38.1 mm

Ball - z - 29

G_ref - 294 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 - 2300 N

Preload class B - G_B - 4600 N

Preload class C - G_C - 9200 N

Preload class D - G_D - 18400 N

Calculation factor - f - 1.27

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_2D - 1.14

Calculation factor - f_HC - 1

Preload class A - 739 N/micron

Preload class B - 967 N/micron

Preload class C - 1284 N/micron

Preload class D - 1742 N/micron

Mass bearing - 25.5 kg

Tags :  SKF , 340x460x56