71918 ACD/HCP4AL SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 71918 ACD/HCP4AL SKF:

d – 7 mm

D – 19 mm

B – 6 mm

d₁ – 10.4 mm

d₂ – 9.9 mm

D₁ – 15.7 mm

K – 0.5 mm

C₁ – 3.65 mm

r_1,2 – min. – 0.3 mm

r_3,4 – min. – 0.15 mm

a – 4.8 mm

d_a – min. – 9 mm

d_b – min. – 9 mm

D_a – max. – 17 mm

D_b – max. – 17.6 mm

r_a – max. – 0.3 mm

r_b – max. – 0.15 mm

d_n – 11.4 mm

Basic dynamic load rating – C – 2 kN

Basic static load rating – C₀ – 0.64 kN

Fatigue load limit – P_u – 0.027 kN

Limiting speed for grease lubrication – 150000 r/min

Limiting speed for oil lubrication – 230000 mm/min

Ball – D_w – 3.572 mm

Ball – z – 8

G_ref – 0.11 cm3

Calculation factor – f₀ – 6.5

Preload class A – G_A – 10 N

Preload class B – G_B – 30 N

Preload class C – G_C – 60 N

Calculation factor – f – 1.02

Calculation factor – f₁ – 1

Calculation factor – f_2A – 1

Calculation factor – f_2B – 1.03

Calculation factor – f_2C – 1.05

Calculation factor – f_HC – 1.01

Preload class A – 9 N/micron

Preload class B – 14 N/micron

Preload class C – 20 N/micron

Mass bearing – 0.006 kg

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