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Bearing 71912 ACE/HCP4A (SKF)

Angular contact ball bearings, super-precision 71912 ACE/HCP4A

Bearing number : 71912 ACE/HCP4A

Size (mm) : 60x85x13

Brand : SKF

Bore Diameter (mm) : 60

Outer Diameter (mm) : 85

Width (mm) : 13

Bearing dimensions and specification in SKF catalogue:

d - 60 mm

D - 85 mm

B - 13 mm

d₁ - 67.75 mm

d₂ - 65.7 mm

D₁ - 77.3 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.3 mm

a - 24.6 mm

d_a - min. - 64.6 mm

d_b - min. - 62 mm

D_a - max. - 80.4 mm

D_b - max. - 83 mm

r_a - max. - 1 mm

r_b - max. - 0.3 mm

d_n - 69.6 mm

Basic dynamic load rating - C - 15.3 kN

Basic static load rating - C₀ - 11.2 kN

Fatigue load limit - P_u - 0.475 kN

Limiting speed for grease lubrication - 23000 r/min

Limiting speed for oil lubrication - 36000 mm/min

Ball - D_w - 7.938 mm

Ball - z - 23

G_ref - 2.5 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 - 139 N

Preload class B - G_B - 418 N

Preload class C - G_C - 836 N

Calculation factor - f - 1.13

Calculation factor - f₁ - 0.98

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.04

Calculation factor - f_2C - 1.08

Calculation factor - f_HC - 1.01

Preload class A - 128 N/micron

Preload class B - 193 N/micron

Preload class C - 254 N/micron

Mass bearing - 0.162 kg

Tags :  SKF , 60x85x13