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Bearing 7204 ACD/HCP4A (SKF)

Angular contact ball bearings, super-precision 7204 ACD/HCP4A

Bearing number : 7204 ACD/HCP4A

Size (mm) : 20x47x14

Brand : SKF

Bore Diameter (mm) : 20

Outer Diameter (mm) : 47

Width (mm) : 14

Bearing dimensions and specification in SKF catalogue:

d - 20 mm

D - 47 mm

B - 14 mm

d₁ - 29.1 mm

d₂ - 29.1 mm

D₁ - 38.7 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.3 mm

a - 15 mm

d_a - min. - 25.6 mm

d_b - min. - 25.6 mm

D_a - max. - 41.4 mm

D_b - max. - 44.6 mm

r_a - max. - 1 mm

r_b - max. - 0.3 mm

d_n - 31.1 mm

Basic dynamic load rating - C - 11.4 kN

Basic static load rating - C₀ - 5.6 kN

Fatigue load limit - P_u - 0.236 kN

Limiting speed for grease lubrication - 38000 r/min

Limiting speed for oil lubrication - 56000 mm/min

Ball - D_w - 7.938 mm

Ball - z - 11

G_ref - 1.539 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 - 70 N

Preload class B - G_B - 140 N

Preload class C - G_C - 280 N

Preload class D - G_D - 560 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 - 1.03

Calculation factor - f_2D - 1.06

Calculation factor - f_HC - 1.01

Preload class A - 68 N/micron

Preload class B - 87 N/micron

Preload class C - 113 N/micron

Preload class D - 149 N/micron

Mass bearing - 0.09 kg

Tags :  SKF , 20x47x14