71911 CE/HCP4AL SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 71911 CE/HCP4AL SKF:

d – 220 mm

D – 340 mm

B – 56 mm

d₁ – 257 mm

d₂ – 257 mm

D₁ – 303 mm

r_1,2 – min. – 3 mm

r_3,4 – min. – 1.5 mm

a – 93.6 mm

d_a – min. – 233 mm

d_b – min. – 233 mm

D_a – max. – 327 mm

D_b – max. – 334 mm

r_a – max. – 2.5 mm

r_b – max. – 1.5 mm

d_n – 267.1 mm

Basic dynamic load rating – C – 319 kN

Basic static load rating – C₀ – 440 kN

Fatigue load limit – P_u – 11 kN

Limiting speed for grease lubrication – 4500 r/min

Limiting speed for oil lubrication – 6700 mm/min

Ball – D_w – 38.1 mm

Ball – z – 21

G_ref – 201 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 – 2000 N

Preload class B – G_B – 4000 N

Preload class C – G_C – 8000 N

Preload class D – G_D – 16000 N

Calculation factor – f – 1.13

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 – 607 N/micron

Preload class B – 789 N/micron

Preload class C – 1037 N/micron

Preload class D – 1392 N/micron

Mass bearing – 13.21 kg

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