SKF 71912ACB/HCP4A Angular contact ball bearings,SKF 71912 ACB/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 71912 ACB/HCP4A

71912 ACB/HCP4A

Dimensions
d 60mm
D 85mm
B 13mm
d1 68.94mm
d2 67.73mm
D2 78.36mm
r1,2min.1mm
r3,4min.0.3mm
a 27.2mm
Abutment dimensions
damin.64.6mm
dbmin.64.6mm
Damax.80.4mm
Dbmax.83mm
ramax.1mm
rbmax.0.3mm
dn 69.8mm
Calculation data
Basic dynamic load ratingC 13.3kN
Basic static load ratingC0 13.4kN
Fatigue load limitPu 0.355kN
Attainable speed for grease lubrication  22000r/min
Attainable speed for oil-air lubrication  36000r/min
Ball diameterDw 5.556mm
Number of ballsz 30 
Reference grease quantityGref 2.77cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 57N
Static axial stiffness, preload class A  104N/µm
Preload class BGB 115N
Static axial stiffness, preload class B  135N/µm
Preload class CGC 340N
Static axial stiffness, preload class C  204N/µm
Calculation factors
Calculation factorf 1.11 
Calculation factorf1 0.99 
Calculation factorf2A 1 
Calculation factorf2B 1.02 
Calculation factorf2C 1.08 
Calculation factorfHC 1.01 
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  0.18kg
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Hot number: 140x160x12 HMSA10 RG 215-2ZNR 28x47x7 HMSA10 V 35x48x8 HMSA10 V 400130 6336/HC5C3PS0VA970 7018 ACD/HCP4AL 7311 BECBM 7829 89307 TN FY 5/8 TF GEC 800 FBAS GEZ 012 ES SNP 3276x14 SYK 40 TR

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