71807 ACD/P4 SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 71807 ACD/P4 SKF:

d – 75 mm

D – 130 mm

B – 25 mm

d₁ – 92.9 mm

d₂ – 92.9 mm

D₂ – 115.3 mm

r_1,2 – min. – 1.5 mm

r_3,4 – min. – 0.6 mm

a – 36.5 mm

d_a – min. – 84 mm

d_a – max. – 92.1 mm

d_b – min. – 84 mm

d_b – max. – 92.1 mm

D_a – max. – 121 mm

D_b – max. – 125.8 mm

r_a – max. – 1.5 mm

r_b – max. – 0.6 mm

Basic dynamic load rating – C – 68.9 kN

Basic static load rating – C₀ – 58.5 kN

Fatigue load limit – P_u – 2.5 kN

Limiting speed for grease lubrication – 11000 r/min

Ball – D_w – 15.875 mm

Ball – z – 17

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 – 430 N

Preload class B – G_B – 860 N

Preload class C – G_C – 1720 N

Preload class D – G_D – 3440 N

Calculation factor – f – 1.08

Calculation factor – f₁ – 0.99

Calculation factor – f_2A – 1

Calculation factor – f_2B – 1.01

Calculation factor – f_2C – 1.03

Calculation factor – f_2D – 1.06

Calculation factor – f_HC – 1.01

Preload class A – 234 N/micron

Preload class B – 304 N/micron

Preload class C – 401 N/micron

Preload class D – 540 N/micron

Mass bearing – 1.064 kg

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