71924 ACD/P4AL SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 71924 ACD/P4AL SKF:

d – 30 mm

D – 47 mm

B – 9 mm

d₁ – 35.8 mm

d₂ – 34.4 mm

D₁ – 41.39 mm

b – 1.5 mm

C₁ – 4.6 mm

C₂ – 1.4 mm

C₃ – 0.9 mm

r_1,2 – min. – 0.3 mm

r_3,4 – min. – 0.15 mm

a – 14.3 mm

d_a – min. – 32 mm

d_b – min. – 32 mm

D_a – max. – 45 mm

D_b – max. – 46.2 mm

r_a – max. – 0.3 mm

r_b – max. – 0.15 mm

d_n – 36.8 mm

Basic dynamic load rating – C – 5.3 kN

Basic static load rating – C₀ – 3.1 kN

Fatigue load limit – P_u – 0.132 kN

Limiting speed for grease lubrication – 44000 r/min

Limiting speed for oil lubrication – 70000 mm/min

Ball – D_w – 4.762 mm

Ball – z – 18

G_ref – 0.6 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 – 48 N

Preload class B – G_B – 145 N

Preload class C – G_C – 290 N

Calculation factor – f – 1.08

Calculation factor – f₁ – 0.98

Calculation factor – f_2A – 1

Calculation factor – f_2B – 1.04

Calculation factor – f_2C – 1.08

Calculation factor – f_HC – 1.01

Preload class A – 61 N/micron

Preload class B – 94 N/micron

Preload class C – 123 N/micron

Mass bearing – 0.045 kg

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