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Bearing S7211 CD/P4A (SKF)

Angular contact ball bearings, super-precision S7211 CD/P4A

Bearing number : S7211 CD/P4A

Size (mm) : 55x100x21

Brand : SKF

Bore Diameter (mm) : 55

Outer Diameter (mm) : 100

Width (mm) : 21

Bearing dimensions and specification in SKF catalogue:

d - 55 mm

D - 100 mm

B - 21 mm

d₁ - 68.9 mm

d₂ - 68.9 mm

D₂ - 89.1 mm

r_1,2 - min. - 1.5 mm

r_3,4 - min. - 0.6 mm

a - 21 mm

d_a - min. - 64 mm

d_a - max. - 68.1 mm

d_b - min. - 64 mm

d_b - max. - 68.1 mm

D_a - max. - 91 mm

D_b - max. - 95.8 mm

r_a - max. - 1.5 mm

r_b - max. - 0.6 mm

Basic dynamic load rating - C - 55.3 kN

Basic static load rating - C₀ - 43 kN

Fatigue load limit - P_u - 1.8 kN

Limiting speed for grease lubrication - 14000 r/min

Ball - D_w - 14.288 mm

Ball - z - 15

Calculation factor - f₀ - 14.5

Preload class A - G_A - 210 N

Preload class B - G_B - 420 N

Preload class C - G_C - 840 N

Preload class D - G_D - 1680 N

Calculation factor - f - 1.08

Calculation factor - f₁ - 1

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.01

Calculation factor - f_2C - 1.03

Calculation factor - f_2D - 1.05

Calculation factor - f_HC - 1

Preload class A - 72 N/micron

Preload class B - 98 N/micron

Preload class C - 137 N/micron

Preload class D - 197 N/micron

Mass bearing - 0.623 kg

Tags :  SKF , 55x100x21