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Bearing 7021 CD/P4A (SKF)

Angular contact ball bearings, super-precision 7021 CD/P4A

Bearing number : 7021 CD/P4A

Size (mm) : 105x160x26

Brand : SKF

Bore Diameter (mm) : 105

Outer Diameter (mm) : 160

Width (mm) : 26

Bearing dimensions and specification in SKF catalogue:

d - 105 mm

D - 160 mm

B - 26 mm

d₁ - 121.9 mm

d₂ - 121.9 mm

D₁ - 143.1 mm

r_1,2 - min. - 2 mm

r_3,4 - min. - 1 mm

a - 30.8 mm

d_a - min. - 114 mm

d_b - min. - 114 mm

D_a - max. - 151 mm

D_b - max. - 155 mm

r_a - max. - 2 mm

r_b - max. - 1 mm

d_n - 125.6 mm

Basic dynamic load rating - C - 95.6 kN

Basic static load rating - C₀ - 96.5 kN

Fatigue load limit - P_u - 3.6 kN

Limiting speed for grease lubrication - 8000 r/min

Limiting speed for oil lubrication - 13000 mm/min

Ball - D_w - 17.462 mm

Ball - z - 21

G_ref - 20.4 cm3

Calculation factor - f₀ - 15.7

Preload class A - G_A - 360 N

Preload class B - G_B - 720 N

Preload class C - G_C - 1440 N

Preload class D - G_D - 2880 N

Calculation factor - f - 1.15

Calculation factor - f₁ - 1

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.02

Calculation factor - f_2C - 1.05

Calculation factor - f_2D - 1.09

Calculation factor - f_HC - 1

Preload class A - 117 N/micron

Preload class B - 159 N/micron

Preload class C - 223 N/micron

Preload class D - 324 N/micron

Mass bearing - 1.592 kg

Tags :  SKF , 105x160x26