239/670 CAK/W33 SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu 239/670 CAK/W33 SKF

d – 8 mm

D – 24 mm

B – 8 mm

d₁ – 13,1 mm

d₂ – 13,1 mm

D₁ – 18,9 mm

r_1,2 – min – 0,3 mm

r_3,4 – min – 0,2 mm

a – 7,8 mm

d_a – min – 10,4 mm

d_b – min – 10,4 mm

D_a – max – 21,6 mm

D_b – max – 22,2 mm

r_a – max – 0,3 mm

r_b – max – 0,2 mm

d_n – 14,3 mm

Basic dynamic load rating – C – 3,6 kN

Basic static load rating – C₀ – 1,3 kN

Fatigue load limit – P_u – 0,057 kN

Limiting speed for grease lubrication – 75.000 r/min

Limiting speed for oil lubrication – 120.000 mm/min

Ball – D_w – 4,762 mm

Ball – z – 8

G_ref – 0,228 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 – 22 N

Preload class B – G_B – 44 N

Preload class C – G_C – 88 N

Preload class D – G_D – 176 N

Calculation factor – f – 1,02

Calculation factor – f₁ – 0,99

Calculation factor – f_2A – 1

Calculation factor – f_2B – 1,01

Calculation factor – f_2C – 1,03

Calculation factor – f_2D – 1,06

Calculation factor – f_HC – 1,01

Preload class A – 31 N/micron

Preload class B – 40 N/micron

Preload class C – 53 N/micron

Preload class D – 70 N/micron

Mass bearing – 0,015 kg

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