SKF 71930ACD/P4A Angular contact ball bearings,SKF 71930 ACD/P4A 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/P4A

71930 ACD/P4A

Dimensions
d 150mm
D 210mm
B 28mm
d1 168.5mm
d2 168.5mm
D1 191.5mm
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  5600r/min
Attainable speed for oil-air lubrication  8500r/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  340N/µm
Preload class BGB 1480N
Static axial stiffness, preload class B  447N/µm
Preload class CGC 2960N
Static axial stiffness, preload class C  596N/µm
Preload class DGD 5920N
Static axial stiffness, preload class D  814N/µm
Calculation factors
Calculation factorf 1.24 
Calculation factorf1 0.98 
Calculation factorf2A 1 
Calculation factorf2B 1.04 
Calculation factorf2C 1.08 
Calculation factorf2D 1.14 
Calculation factorfHC 1 
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  2.5kg
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Hot number: 17x32x7 HMS5 V 31152 315-2Z 315526 32930 6002/HR11QN 7015 CB/P4AL 90851 99376 C 2316 K NN 3092 K/SPW33 SAF 1622 x 4 SAF 22517 x 2.7/8 TLC SHT 38 SSAFS 22640

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