248/1320 CAFA/W20 SKF

Kích thước và Thông số kỹ thuật của Vòng bi cầu 248/1320 CAFA/W20 SKF

d – 95 mm

D – 145 mm

B – 24 mm

d₁ – 113,7 mm

d₂ – 111,15 mm

D₂ – 130 mm

r_1,2 – min – 1,5 mm

r_3,4 – min – 1 mm

a – 40,2 mm

d_a – min – 102 mm

d_a – max – 112,9 mm

d_b – min – 102 mm

d_b – max – 110,4 mm

D_a – max – 138 mm

D_b – max – 140,4 mm

r_a – max – 1,5 mm

r_b – max – 1 mm

Basic dynamic load rating – C – 27,6 kN

Basic static load rating – C₀ – 24,5 kN

Fatigue load limit – P_u – 0,95 kN

Limiting speed for grease lubrication – 13.000 r/min

Ball – D_w – 10,319 mm

Ball – z – 26

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 – 165 N

Preload class B – G_B – 330 N

Preload class C – G_C – 990 N

Calculation factor – f – 1,07

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_HC – 1,01

Preload class A – 165 N/micron

Preload class B – 211 N/micron

Preload class C – 318 N/micron

Mass bearing – 1,23 kg

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