SKF 71972ACDMA/HCP4A Angular contact ball bearings,SKF 71972 ACDMA/HCP4A Super-precision bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71972 ACDMA/HCP4A

71972 ACDMA/HCP4A

Dimensions
d 360mm
D 480mm
B 56mm
d1 397mm
d2 397mm
D1 443mm
r1,2min.3mm
r3,4min.1.1mm
a 126.3mm
Abutment dimensions
damin.373mm
dbmin.373mm
Damax.465mm
Dbmax.474mm
ramax.2.5mm
rbmax.1mm
dn 407mm
Calculation data
Basic dynamic load ratingC 371kN
Basic static load ratingC0 670kN
Fatigue load limitPu 13.7kN
Attainable speed for grease lubrication  2200r/min
Attainable speed for oil-air lubrication  3600r/min
Ball diameterDw 38.1mm
Number of ballsz 30 
Reference grease quantityGref 313cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 2300N
Static axial stiffness, preload class A  837N/µm
Preload class BGB 4600N
Static axial stiffness, preload class B  1096N/µm
Preload class CGC 9200N
Static axial stiffness, preload class C  1455N/µm
Preload class DGD 18400N
Static axial stiffness, preload class D  1975N/µm
Calculation factors
Calculation factorf 1.29 
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  22.6kg
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Hot number: 542726 405502 470781 53771 80009 90017 EE 982051/982900 FYE 3 N N 324 ECP PFT 25 FM SAF 1507 T SAL 10 E SSAFS 23038 KATLC x 6.7/8 W 628-2RZ YAR 213-208-2F

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