7021 CD/HCP4A SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 7021 CD/HCP4A SKF:

d – 30 mm

D – 47 mm

B – 9 mm

d₁ – 35.6 mm

d₂ – 35.6 mm

D₁ – 41.4 mm

r_1,2 – min. – 0.3 mm

r_3,4 – min. – 0.2 mm

a – 13.6 mm

d_a – min. – 32 mm

d_b – min. – 32 mm

D_a – max. – 45 mm

D_b – max. – 45.6 mm

r_a – max. – 0.3 mm

r_b – max. – 0.2 mm

d_n – 36.8 mm

Basic dynamic load rating – C – 6.8 kN

Basic static load rating – C₀ – 4.3 kN

Fatigue load limit – P_u – 0.183 kN

Limiting speed for grease lubrication – 32000 r/min

Limiting speed for oil lubrication – 48000 mm/min

Ball – D_w – 4.762 mm

Ball – z – 20

G_ref – 0.63 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 – 40 N

Preload class B – G_B – 80 N

Preload class C – G_C – 160 N

Preload class D – G_D – 320 N

Calculation factor – f – 1.08

Calculation factor – f₁ – 0.98

Calculation factor – f_2A – 1

Calculation factor – f_2B – 1.07

Calculation factor – f_2C – 1.12

Calculation factor – f_2D – 1.17

Calculation factor – f_HC – 1.04

Preload class A – 72 N/micron

Preload class B – 93 N/micron

Preload class C – 121 N/micron

Preload class D – 161 N/micron

Mass bearing – 0.045 kg

BẠN MUA VÒNG BI 7021 CD/HCP4A SKF Ở ĐÂU?

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