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Bearing 7205 ACD/P4A (SKF)

Angular contact ball bearings, super-precision 7205 ACD/P4A

Bearing number : 7205 ACD/P4A

Size (mm) : 25x52x15

Brand : SKF

Bore Diameter (mm) : 25

Outer Diameter (mm) : 52

Width (mm) : 15

Bearing dimensions and specification in SKF catalogue:

d - 25 mm

D - 52 mm

B - 15 mm

d₁ - 34.1 mm

d₂ - 34.1 mm

D₁ - 43.7 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.3 mm

a - 16.7 mm

d_a - min. - 30.6 mm

d_b - min. - 30.6 mm

D_a - max. - 46.4 mm

D_b - max. - 49.6 mm

r_a - max. - 1 mm

r_b - max. - 0.3 mm

d_n - 36.1 mm

Basic dynamic load rating - C - 13 kN

Basic static load rating - C₀ - 7 kN

Fatigue load limit - P_u - 0.29 kN

Limiting speed for grease lubrication - 26000 r/min

Limiting speed for oil lubrication - 40000 mm/min

Ball - D_w - 7.938 mm

Ball - z - 13

G_ref - 1.872 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 - 80 N

Preload class B - G_B - 160 N

Preload class C - G_C - 320 N

Preload class D - G_D - 640 N

Calculation factor - f - 1.03

Calculation factor - f₁ - 0.99

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.01

Calculation factor - f_2C - 1.02

Calculation factor - f_2D - 1.05

Calculation factor - f_HC - 1

Preload class A - 71 N/micron

Preload class B - 92 N/micron

Preload class C - 119 N/micron

Preload class D - 158 N/micron

Mass bearing - 0.128 kg

Tags :  SKF , 25x52x15