7018 CE/P4AL1 SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 7018 CE/P4AL1 SKF:

d – 15 mm

D – 35 mm

B – 11 mm

d₁ – 21.4 mm

d₂ – 21.4 mm

D₁ – 29.1 mm

r_1,2 – min. – 0.6 mm

r_3,4 – min. – 0.3 mm

a – 11.5 mm

d_a – min. – 19.2 mm

d_b – min. – 19.2 mm

D_a – max. – 30.8 mm

D_b – max. – 32.6 mm

r_a – max. – 0.6 mm

r_b – max. – 0.3 mm

d_n – 23 mm

Basic dynamic load rating – C – 7.2 kN

Basic static load rating – C₀ – 3.2 kN

Fatigue load limit – P_u – 0.134 kN

Limiting speed for grease lubrication – 43000 r/min

Limiting speed for oil lubrication – 63000 mm/min

Ball – D_w – 6.35 mm

Ball – z – 10

G_ref – 0.729 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 – 45 N

Preload class B – G_B – 90 N

Preload class C – G_C – 180 N

Preload class D – G_D – 360 N

Calculation factor – f – 1.03

Calculation factor – f₁ – 0.99

Calculation factor – f_2A – 1

Calculation factor – f_2B – 1.01

Calculation factor – f_2C – 1.02

Calculation factor – f_2D – 1.05

Calculation factor – f_HC – 1

Preload class A – 46 N/micron

Preload class B – 60 N/micron

Preload class C – 78 N/micron

Preload class D – 102 N/micron

Mass bearing – 0.043 kg

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