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Bearing 71804 ACD/P4 (SKF)

Angular contact ball bearings, super-precision 71804 ACD/P4

Bearing number : 71804 ACD/P4

Size (mm) : 20x32x7

Brand : SKF

Bore Diameter (mm) : 20

Outer Diameter (mm) : 32

Width (mm) : 7

Bearing dimensions and specification in SKF catalogue:

d - 20 mm

D - 32 mm

B - 7 mm

d₁ - 24.1 mm

d₂ - 24.1 mm

D₁ - 28.1 mm

r_1,2 - min. - 0.3 mm

r_3,4 - min. - 0.15 mm

a - 9.6 mm

d_a - min. - 22 mm

d_b - min. - 22 mm

D_a - max. - 30 mm

D_b - max. - 31.2 mm

r_a - max. - 0.3 mm

r_b - max. - 0.15 mm

d_n - 24.5 mm

Basic dynamic load rating - C - 3.6 kN

Basic static load rating - C₀ - 2.5 kN

Fatigue load limit - P_u - 0.106 kN

Limiting speed for grease lubrication - 40000 r/min

Limiting speed for oil lubrication - 63000 mm/min

Ball - D_w - 3.175 mm

Ball - z - 17

G_ref - 0.18 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 - 32 N

Preload class B - G_B - 100 N

Preload class C - G_C - 200 N

Calculation factor - f - 1.08

Calculation factor - f₁ - 0.97

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.08

Calculation factor - f_2C - 1.15

Calculation factor - f_HC - 1

Preload class A - 52 N/micron

Preload class B - 83 N/micron

Preload class C - 112 N/micron

Mass bearing - 0.018 kg

Tags :  SKF , 20x32x7