S71920 ACD/HCP4A SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao S71920 ACD/HCP4A SKF:

d – 80 mm

D – 110 mm

B – 16 mm

d₁ – 89.2 mm

d₂ – 89.2 mm

D₁ – 100.8 mm

r_1,2 – min. – 1 mm

r_3,4 – min. – 0.3 mm

a – 20.8 mm

d_a – min. – 84.6 mm

d_b – min. – 84.6 mm

D_a – max. – 105 mm

D_b – max. – 108 mm

r_a – max. – 1 mm

r_b – max. – 0.3 mm

d_n – 91.7 mm

Basic dynamic load rating – C – 36.4 kN

Basic static load rating – C₀ – 39 kN

Fatigue load limit – P_u – 1.7 kN

Limiting speed for grease lubrication – 11000 r/min

Limiting speed for oil lubrication – 18000 mm/min

Ball – D_w – 9.525 mm

Ball – z – 27

G_ref – 5.1 cm3

Calculation factor – f₀ – 16.5

Preload class A – G_A – 140 N

Preload class B – G_B – 280 N

Preload class C – G_C – 560 N

Preload class D – G_D – 1120 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 – 85 N/micron

Preload class B – 117 N/micron

Preload class C – 167 N/micron

Preload class D – 246 N/micron

Mass bearing – 0.37 kg

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