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Bearing 7048 ACD/P4A (SKF)

Angular contact ball bearings, super-precision 7048 ACD/P4A

Bearing number : 7048 ACD/P4A

Size (mm) : 240x360x56

Brand : SKF

Bore Diameter (mm) : 240

Outer Diameter (mm) : 360

Width (mm) : 56

Bearing dimensions and specification in SKF catalogue:

d - 240 mm

D - 360 mm

B - 56 mm

d₁ - 277 mm

d₂ - 277 mm

D₁ - 323 mm

r_1,2 - min. - 3 mm

r_3,4 - min. - 1.5 mm

a - 98.3 mm

d_a - min. - 253 mm

d_b - min. - 253 mm

D_a - max. - 347 mm

D_b - max. - 354 mm

r_a - max. - 2.5 mm

r_b - max. - 1.5 mm

d_n - 287 mm

Basic dynamic load rating - C - 325 kN

Basic static load rating - C₀ - 465 kN

Fatigue load limit - P_u - 11.4 kN

Limiting speed for grease lubrication - 3400 r/min

Limiting speed for oil lubrication - 5000 mm/min

Ball - D_w - 38.1 mm

Ball - z - 22

G_ref - 216 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 - 2050 N

Preload class B - G_B - 4100 N

Preload class C - G_C - 8200 N

Preload class D - G_D - 16400 N

Calculation factor - f - 1.15

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 - 571 N/micron

Preload class B - 743 N/micron

Preload class C - 979 N/micron

Preload class D - 1315 N/micron

Mass bearing - 17.121 kg

Tags :  SKF , 240x360x56