71912 ACE/HCP4AL SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 71912 ACE/HCP4AL SKF:

d – 40 mm

D – 68 mm

B – 15 mm

d₁ – 49.7 mm

d₂ – 47.6 mm

D₁ – 58.25 mm

b – 1.7 mm

C₁ – 7.8 mm

C₂ – 2.5 mm

C₃ – 3 mm

r_1,2 – min. – 1 mm

r_3,4 – min. – 0.6 mm

a – 14.8 mm

d_a – min. – 44.6 mm

d_b – min. – 44.6 mm

D_a – max. – 63.4 mm

D_b – max. – 63.8 mm

r_a – max. – 1 mm

r_b – max. – 0.6 mm

d_n – 51.6 mm

Basic dynamic load rating – C – 12.4 kN

Basic static load rating – C₀ – 7.6 kN

Fatigue load limit – P_u – 0.32 kN

Limiting speed for grease lubrication – 30000 r/min

Limiting speed for oil lubrication – 45000 mm/min

Ball – D_w – 7.144 mm

Ball – z – 19

G_ref – 2.8 cm3

Calculation factor – f₀ – 8.1

Preload class A – G_A – 65 N

Preload class B – G_B – 200 N

Preload class C – G_C – 390 N

Calculation factor – f – 1.06

Calculation factor – f₁ – 1

Calculation factor – f_2A – 1

Calculation factor – f_2B – 1.03

Calculation factor – f_2C – 1.05

Calculation factor – f_HC – 1

Preload class A – 34 N/micron

Preload class B – 54 N/micron

Preload class C – 73 N/micron

Mass bearing – 0.187 kg

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