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Bearing 7044 ACD/P4A (SKF)

Angular contact ball bearings, super-precision 7044 ACD/P4A

Bearing number : 7044 ACD/P4A

Size (mm) : 220x340x56

Brand : SKF

Bore Diameter (mm) : 220

Outer Diameter (mm) : 340

Width (mm) : 56

Bearing dimensions and specification in SKF catalogue:

d - 220 mm

D - 340 mm

B - 56 mm

d₁ - 257 mm

d₂ - 257 mm

D₁ - 303 mm

r_1,2 - min. - 3 mm

r_3,4 - min. - 1.5 mm

a - 93.6 mm

d_a - min. - 233 mm

d_b - min. - 233 mm

D_a - max. - 327 mm

D_b - max. - 334 mm

r_a - max. - 2.5 mm

r_b - max. - 1.5 mm

d_n - 267.1 mm

Basic dynamic load rating - C - 319 kN

Basic static load rating - C₀ - 440 kN

Fatigue load limit - P_u - 11 kN

Limiting speed for grease lubrication - 3600 r/min

Limiting speed for oil lubrication - 5300 mm/min

Ball - D_w - 38.1 mm

Ball - z - 21

G_ref - 201 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 - 2000 N

Preload class B - G_B - 4000 N

Preload class C - G_C - 8000 N

Preload class D - G_D - 16000 N

Calculation factor - f - 1.13

Calculation factor - f₁ - 0.99

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.02

Calculation factor - f_2C - 1.05

Calculation factor - f_2D - 1.08

Calculation factor - f_HC - 1

Preload class A - 546 N/micron

Preload class B - 710 N/micron

Preload class C - 935 N/micron

Preload class D - 1254 N/micron

Mass bearing - 16.068 kg

Tags :  SKF , 220x340x56