7004 ACE/P4AL SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 7004 ACE/P4AL SKF:

d – 40 mm

D – 62 mm

B – 12 mm

d₁ – 47.1 mm

d₂ – 47.1 mm

D₂ – 57.12 mm

r_1,2 – min. – 0.6 mm

r_3,4 – min. – 0.3 mm

a – 18 mm

d_a – min. – 43.2 mm

d_a – max. – 46.6 mm

d_b – min. – 43.2 mm

d_b – max. – 46.6 mm

D_a – max. – 58.8 mm

D_b – max. – 60.6 mm

r_a – max. – 0.6 mm

r_b – max. – 0.3 mm

Basic dynamic load rating – C – 11.7 kN

Basic static load rating – C₀ – 8 kN

Fatigue load limit – P_u – 0.34 kN

Limiting speed for grease lubrication – 22000 r/min

Ball – D_w – 6.35 mm

Ball – z – 21

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 – 70 N

Preload class B – G_B – 140 N

Preload class C – G_C – 280 N

Preload class D – G_D – 560 N

Calculation factor – f – 1.09

Calculation factor – f₁ – 0.98

Calculation factor – f_2A – 1

Calculation factor – f_2B – 1.07

Calculation factor – f_2C – 1.12

Calculation factor – f_2D – 1.17

Calculation factor – f_HC – 1.04

Preload class A – 98 N/micron

Preload class B – 127 N/micron

Preload class C – 167 N/micron

Preload class D – 221 N/micron

Mass bearing – 0.1 kg

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