71920 ACD/HCP4AL SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 71920 ACD/HCP4AL SKF:

d – 150 mm

D – 210 mm

B – 28 mm

d₁ – 168.5 mm

d₂ – 168.5 mm

D₁ – 191.5 mm

r_1,2 – min. – 2 mm

r_3,4 – min. – 1 mm

a – 38.2 mm

d_a – min. – 159 mm

d_b – min. – 159 mm

D_a – max. – 201 mm

D_b – max. – 205 mm

r_a – max. – 2 mm

r_b – max. – 1 mm

d_n – 173.5 mm

Basic dynamic load rating – C – 125 kN

Basic static load rating – C₀ – 146 kN

Fatigue load limit – P_u – 4.8 kN

Limiting speed for grease lubrication – 6300 r/min

Limiting speed for oil lubrication – 9500 mm/min

Ball – D_w – 19.05 mm

Ball – z – 26

G_ref – 33 cm3

Calculation factor – f₀ – 16.2

Preload class A – G_A – 470 N

Preload class B – G_B – 940 N

Preload class C – G_C – 1880 N

Preload class D – G_D – 3760 N

Calculation factor – f – 1.24

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 – 154 N/micron

Preload class B – 211 N/micron

Preload class C – 297 N/micron

Preload class D – 435 N/micron

Mass bearing – 2.55 kg

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