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Bearing 71912 CB/P4A (SKF)

Angular contact ball bearings, super-precision 71912 CB/P4A

Bearing number : 71912 CB/P4A

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 - 68.94 mm

d₂ - 67.73 mm

D₂ - 78.36 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.3 mm

a - 19.5 mm

d_a - min. - 64.6 mm

d_b - min. - 64.6 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 - 69.8 mm

Basic dynamic load rating - C - 10.4 kN

Basic static load rating - C₀ - 8.8 kN

Fatigue load limit - P_u - 0.375 kN

Limiting speed for grease lubrication - 22000 r/min

Limiting speed for oil lubrication - 32000 mm/min

Ball - D_w - 5.556 mm

Ball - z - 30

G_ref - 2.77 cm3

Calculation factor - f₀ - 9.8

Preload class A - G_A - 34 N

Preload class B - G_B - 68 N

Preload class C - G_C - 205 N

Calculation factor - f - 1.11

Calculation factor - f₁ - 1

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.02

Calculation factor - f_2C - 1.07

Calculation factor - f_HC - 1

Preload class A - 36 N/micron

Preload class B - 48 N/micron

Preload class C - 77 N/micron

Mass bearing - 0.195 kg

Tags :  SKF , 60x85x13