71904 ACE/P4AH SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 71904 ACE/P4AH SKF:

d – 120 mm

D – 165 mm

B – 22 mm

d₁ – 133.9 mm

d₂ – 133.9 mm

D₂ – 154.05 mm

r_1,2 – min. – 1.1 mm

r_3,4 – min. – 0.6 mm

a – 30.2 mm

d_a – min. – 126 mm

d_a – max. – 133.3 mm

d_b – min. – 126 mm

d_b – max. – 133.3 mm

D_a – max. – 159 mm

D_b – max. – 161 mm

r_a – max. – 1 mm

r_b – max. – 0.6 mm

Basic dynamic load rating – C – 78 kN

Basic static load rating – C₀ – 91.5 kN

Fatigue load limit – P_u – 3.2 kN

Limiting speed for grease lubrication – 7500 r/min

Ball – D_w – 14.288 mm

Ball – z – 28

Calculation factor – f₀ – 16.5

Preload class A – G_A – 290 N

Preload class B – G_B – 580 N

Preload class C – G_C – 1160 N

Preload class D – G_D – 2320 N

Calculation factor – f – 1.26

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 – 127 N/micron

Preload class B – 174 N/micron

Preload class C – 246 N/micron

Preload class D – 361 N/micron

Mass bearing – 1.21 kg

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