SKF 71912ACD/HCP4AL Angular contact ball bearings,SKF 71912 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 71912 ACD/HCP4AL

71912 ACD/HCP4AL

Dimensions
d 60mm
D 85mm
B 13mm
d1 67.7mm
d2 67.7mm
D1 77.3mm
b 2.2mm
C1 6.5mm
C2 3.2mm
C3 2mm
r1,2min.1mm
r3,4min.0.3mm
a 23.5mm
Abutment dimensions
damin.64.6mm
dbmin.64.6mm
Damax.80.4mm
Dbmax.83mm
ramax.1mm
rbmax.0.3mm
dn 69.7mm
Calculation data
Basic dynamic load ratingC 18.6kN
Basic static load ratingC0 14.6kN
Fatigue load limitPu 0.62kN
Attainable speed for grease lubrication  16000r/min
Attainable speed for oil-air lubrication  26000r/min
Ball diameterDw 7.938mm
Number of ballsz 24 
Reference grease quantityGref 2.7cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 120N
Static axial stiffness, preload class A  142N/µm
Preload class BGB 240N
Static axial stiffness, preload class B  184N/µm
Preload class CGC 480N
Static axial stiffness, preload class C  242N/µm
Preload class DGD 960N
Static axial stiffness, preload class D  324N/µm
Calculation factors
Calculation factorf 1.17 
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  0.16kg
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Hot number: 6212-2Z/VA228 68x88x8 CRW1 R 7320 BEGAF 750 VL V FSAF 22616 T KR 32 PPA NCF 2932 CV NU 2216 ECJ P 80 R-35 WF SAF 22624 x 4.1/8 T SNP 3260x11 SYFJ 506 XHCE 055/OK 140 YAR 212-204-2F YAT 206-103

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