71944 CD/HCP4A SKF
Kích thước và Thông số kỹ thuật của Vòng bi cầu tiếp xúc có độ chính xác cao 71944 CD/HCP4A SKF:
d – 65 mm
D – 100 mm
B – 18 mm
d1 – 75.8 mm
d2 – 75.8 mm
D1 – 89.2 mm
K – 0.5 mm
C1 – 4.9 mm
r1,2 – min. – 1.1 mm
r3,4 – min. – 0.6 mm
a – 28.3 mm
da – min. – 71 mm
db – min. – 71 mm
Da – max. – 94 mm
Db – max. – 96.8 mm
ra – max. – 1 mm
rb – max. – 0.6 mm
dn – 78.1 mm
Basic dynamic load rating – C – 39 kN
Basic static load rating – C0 – 35.5 kN
Fatigue load limit – Pu – 1.5 kN
Limiting speed for grease lubrication – 15000 r/min
Limiting speed for oil lubrication – 22000 mm/min
Ball – Dw – 11.112 mm
Ball – z – 20
Gref – 5.7 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 – GA – 240 N
Preload class B – GB – 480 N
Preload class C – GC – 960 N
Preload class D – GD – 1920 N
Calculation factor – f – 1.13
Calculation factor – f1 – 0.99
Calculation factor – f2A – 1
Calculation factor – f2B – 1.02
Calculation factor – f2C – 1.05
Calculation factor – f2D – 1.08
Calculation factor – fHC – 1.02
Preload class A – 193 N/micron
Preload class B – 253 N/micron
Preload class C – 335 N/micron
Preload class D – 453 N/micron
Mass bearing – 0.361 kg
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