SKF 71930ACD/HCP4AL Angular contact ball bearings,SKF 71930 ACD/HCP4AL Super-precision bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71930 ACD/HCP4AL

71930 ACD/HCP4AL

Dimensions
d 150mm
D 210mm
B 28mm
d1 168.5mm
d2 168.5mm
D1 191.5mm
b 2.6mm
C1 15.6mm
C2 6.6mm
C3 5.6mm
r1,2min.2mm
r3,4min.1mm
a 56.1mm
Abutment dimensions
damin.159mm
dbmin.159mm
Damax.201mm
Dbmax.205mm
ramax.2mm
rbmax.1mm
dn 173.5mm
Calculation data
Basic dynamic load ratingC 108kN
Basic static load ratingC0 125kN
Fatigue load limitPu 3.9kN
Attainable speed for grease lubrication  6700r/min
Attainable speed for oil-air lubrication  10000r/min
Ball diameterDw 19.05mm
Number of ballsz 23 
Reference grease quantityGref 35cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 740N
Static axial stiffness, preload class A  377N/µm
Preload class BGB 1480N
Static axial stiffness, preload class B  496N/µm
Preload class CGC 2960N
Static axial stiffness, preload class C  662N/µm
Preload class DGD 5920N
Static axial stiffness, preload class D  904N/µm
Calculation factors
Calculation factorf 1.24 
Calculation factorf1 0.98 
Calculation factorf2A 1 
Calculation factorf2B 1.07 
Calculation factorf2C 1.12 
Calculation factorf2D 1.17 
Calculation factorfHC 1.04 
Calculation factore 0.68 
Calculation factor (single, tandem)Y2 0.87 
Calculation factor (single, tandem)Y0 0.38 
Calculation factor (single, tandem)X2 0.41 
Calculation factor (back-to-back, face-to-face)Y1 0.92 
Calculation factor (back-to-back, face-to-face)Y2 1.41 
Calculation factor (back-to-back, face-to-face)Y0 0.76 
Calculation factor (back-to-back, face-to-face)X2 0.67 
Mass
Mass bearing  2.08kg
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Hot number: 1450 VL R 17144 32x52x7 HMSA10 V 44x60x10 HMSA10 V 595636 60x85x10 HMSA10 RG 6214-ZNR 7013 CD/P4AL GEZ 400 TXA-2LS NNC 4836 CV OH 30/800 H OH 3260 H OKF 700 PSM 303830 A51 SD 25x35x4

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