S71904 CD/HCP4A SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao S71904 CD/HCP4A SKF:

d – 75 mm

D – 115 mm

B – 20 mm

d₁ – 87.3 mm

d₂ – 87.3 mm

D₁ – 102.7 mm

r_1,2 – min. – 1.1 mm

r_3,4 – min. – 0.6 mm

a – 32.3 mm

d_a – min. – 81 mm

d_b – min. – 81 mm

D_a – max. – 109 mm

D_b – max. – 111 mm

r_a – max. – 1 mm

r_b – max. – 0.6 mm

d_n – 90 mm

Basic dynamic load rating – C – 49.4 kN

Basic static load rating – C₀ – 46.5 kN

Fatigue load limit – P_u – 2 kN

Limiting speed for grease lubrication – 13000 r/min

Limiting speed for oil lubrication – 20000 mm/min

Ball – D_w – 12.7 mm

Ball – z – 20

G_ref – 8.4 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 – 310 N

Preload class B – G_B – 620 N

Preload class C – G_C – 1240 N

Preload class D – G_D – 2480 N

Calculation factor – f – 1.14

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 – 222 N/micron

Preload class B – 290 N/micron

Preload class C – 386 N/micron

Preload class D – 522 N/micron

Mass bearing – 0.527 kg

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