Bearings Online Catalogue

Home > Bearings Catalogue Online > Angular Contact Ball Bearings

Bearing S71921 CD/P4A (SKF)

Angular contact ball bearings, super-precision S71921 CD/P4A

Bearing number : S71921 CD/P4A

Size (mm) : 105x145x20

Brand : SKF

Bore Diameter (mm) : 105

Outer Diameter (mm) : 145

Width (mm) : 20

Bearing dimensions and specification in SKF catalogue:

d - 105 mm

D - 145 mm

B - 20 mm

d₁ - 117.3 mm

d₂ - 117.3 mm

D₂ - 135.65 mm

r_1,2 - min. - 1.1 mm

r_3,4 - min. - 0.6 mm

a - 26.8 mm

d_a - min. - 111 mm

d_a - max. - 116.7 mm

d_b - min. - 111 mm

d_b - max. - 116.7 mm

D_a - max. - 139 mm

D_b - max. - 141 mm

r_a - max. - 1 mm

r_b - max. - 0.6 mm

Basic dynamic load rating - C - 61.8 kN

Basic static load rating - C₀ - 69.5 kN

Fatigue load limit - P_u - 2.6 kN

Limiting speed for grease lubrication - 8500 r/min

Ball - D_w - 12.7 mm

Ball - z - 27

Calculation factor - f₀ - 16.4

Preload class A - G_A - 230 N

Preload class B - G_B - 460 N

Preload class C - G_C - 920 N

Preload class D - G_D - 1840 N

Calculation factor - f - 1.25

Calculation factor - f₁ - 1

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.04

Calculation factor - f_2C - 1.09

Calculation factor - f_2D - 1.15

Calculation factor - f_HC - 1

Preload class A - 110 N/micron

Preload class B - 151 N/micron

Preload class C - 215 N/micron

Preload class D - 316 N/micron

Mass bearing - 0.847 kg

Tags :  SKF , 105x145x20