Bearings Online Catalogue

Home > Bearings Catalogue Online > Angular Contact Ball Bearings

Bearing 71821 CD/P4 (SKF)

Angular contact ball bearings, super-precision 71821 CD/P4

Bearing number : 71821 CD/P4

Size (mm) : 105x130x13

Brand : SKF

Bore Diameter (mm) : 105

Outer Diameter (mm) : 130

Width (mm) : 13

Bearing dimensions and specification in SKF catalogue:

d - 105 mm

D - 130 mm

B - 13 mm

d₁ - 113.2 mm

d₂ - 113.2 mm

D₁ - 122 mm

r_1,2 - min. - 1 mm

r_3,4 - min. - 0.3 mm

a - 22.3 mm

d_a - min. - 109.6 mm

d_b - min. - 109.6 mm

D_a - max. - 125.4 mm

D_b - max. - 128 mm

r_a - max. - 1 mm

r_b - max. - 0.3 mm

d_n - 114.6 mm

Basic dynamic load rating - C - 22.9 kN

Basic static load rating - C₀ - 30 kN

Fatigue load limit - P_u - 1.2 kN

Limiting speed for grease lubrication - 9000 r/min

Limiting speed for oil lubrication - 14000 mm/min

Ball - D_w - 7.144 mm

Ball - z - 35

G_ref - 4 cm3

Calculation factor - f₀ - 17.4

Preload class A - G_A - 130 N

Preload class B - G_B - 390 N

Preload class C - G_C - 780 N

Calculation factor - f - 1.44

Calculation factor - f₁ - 1

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.09

Calculation factor - f_2C - 1.16

Calculation factor - f_HC - 1

Preload class A - 96 N/micron

Preload class B - 167 N/micron

Preload class C - 250 N/micron

Mass bearing - 0.32 kg

Tags :  SKF , 105x130x13