7021 ACD/HCP4AH1 SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 7021 ACD/HCP4AH1 SKF:

d – 85 mm

D – 120 mm

B – 18 mm

d₁ – 98.2 mm

d₂ – 96.7 mm

D₂ – 110.2 mm

b – 2.2 mm

C₁ – 9.3 mm

C₂ – 4.5 mm

C₃ – 2.9 mm

r_1,2 – min. – 1.1 mm

r_3,4 – min. – 0.6 mm

a – 36.3 mm

d_a – min. – 91 mm

d_b – min. – 91 mm

D_a – max. – 114 mm

D_b – max. – 116.8 mm

r_a – max. – 1 mm

r_b – max. – 0.6 mm

d_n – 99.2 mm

Basic dynamic load rating – C – 15.3 kN

Basic static load rating – C₀ – 15.3 kN

Fatigue load limit – P_u – 0.64 kN

Limiting speed for grease lubrication – 16000 r/min

Limiting speed for oil lubrication – 24000 mm/min

Ball – D_w – 6.747 mm

Ball – z – 37

G_ref – 6.46 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 – 93 N

Preload class B – G_B – 185 N

Preload class C – G_C – 560 N

Calculation factor – f – 1.11

Calculation factor – f₁ – 0.99

Calculation factor – f_2A – 1

Calculation factor – f_2B – 1.02

Calculation factor – f_2C – 1.08

Calculation factor – f_HC – 1.01

Preload class A – 151 N/micron

Preload class B – 195 N/micron

Preload class C – 296 N/micron

Mass bearing – 0.544 kg

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