71918 CD/P4AH1 SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 71918 CD/P4AH1 SKF:

d – 80 mm

D – 125 mm

B – 22 mm

d₁ – 93.9 mm

d₂ – 93.9 mm

D₁ – 111.1 mm

K – 0.5 mm

C₁ – 5.89 mm

r_1,2 – min. – 1.1 mm

r_3,4 – min. – 0.6 mm

a – 35 mm

d_a – min. – 86 mm

d_b – min. – 86 mm

D_a – max. – 119 mm

D_b – max. – 121 mm

r_a – max. – 1 mm

r_b – max. – 0.6 mm

d_n – 96.9 mm

Basic dynamic load rating – C – 62.4 kN

Basic static load rating – C₀ – 58.5 kN

Fatigue load limit – P_u – 2.4 kN

Limiting speed for grease lubrication – 9500 r/min

Limiting speed for oil lubrication – 15000 mm/min

Ball – D_w – 14.288 mm

Ball – z – 20

G_ref – 11.1 cm3

Calculation factor – e – 0.68

Calculation factor – Y₂ – 0.87

Calculation factor – Y₀ – 0.38

Calculation factor – X₂ – 0.41

Calculation factor – Y₁ – 0.92

Calculation factor – Y₂ – 1.41

Calculation factor – Y₀ – 0.76

Calculation factor – X₂ – 0.67

Preload class A – G_A – 390 N

Preload class B – G_B – 780 N

Preload class C – G_C – 1560 N

Preload class D – G_D – 3120 N

Calculation factor – f – 1.13

Calculation factor – f₁ – 0.99

Calculation factor – f_2A – 1

Calculation factor – f_2B – 1.02

Calculation factor – f_2C – 1.05

Calculation factor – f_2D – 1.08

Calculation factor – f_HC – 1

Preload class A – 223 N/micron

Preload class B – 291 N/micron

Preload class C – 386 N/micron

Preload class D – 523 N/micron

Mass bearing – 0.854 kg

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