71911 CB/HCP4A SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 71911 CB/HCP4A SKF:

d – 45 mm

D – 75 mm

B – 16 mm

d₁ – 54.2 mm

d₂ – 54.2 mm

D₂ – 68.3 mm

r_1,2 – min. – 1 mm

r_3,4 – min. – 0.3 mm

a – 22.1 mm

d_a – min. – 49.6 mm

d_a – max. – 53.7 mm

d_b – min. – 49.6 mm

d_b – max. – 53.7 mm

D_a – max. – 70.4 mm

D_b – max. – 73 mm

r_a – max. – 1 mm

r_b – max. – 0.3 mm

Basic dynamic load rating – C – 27.6 kN

Basic static load rating – C₀ – 21.6 kN

Fatigue load limit – P_u – 0.9 kN

Limiting speed for grease lubrication – 20000 r/min

Ball – D_w – 9.525 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 – 170 N

Preload class B – G_B – 340 N

Preload class C – G_C – 680 N

Preload class D – G_D – 1360 N

Calculation factor – f – 1.09

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 – 1.02

Preload class A – 146 N/micron

Preload class B – 192 N/micron

Preload class C – 254 N/micron

Preload class D – 343 N/micron

Mass bearing – 0.201 kg

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