SKF 71918ACD/HCP4AH1 Angular contact ball bearings,SKF 71918 ACD/HCP4AH1 Super-precision bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71918 ACD/HCP4AH1

71918 ACD/HCP4AH1

Dimensions
d 90mm
D 125mm
B 18mm
d1 100.8mm
d2 100.8mm
D1 114.2mm
K 0.5mm
C1 5.2mm
r1,2min.1.1mm
r3,4min.0.6mm
a 34.2mm
Abutment dimensions
damin.96mm
dbmin.96mm
Damax.119mm
Dbmax.121mm
ramax.1mm
rbmax.0.6mm
dn 103.3mm
Calculation data
Basic dynamic load ratingC 44.2kN
Basic static load ratingC0 48kN
Fatigue load limitPu 1.96kN
Attainable speed for grease lubrication  10000r/min
Attainable speed for oil-air lubrication  17000r/min
Ball diameterDw 11.112mm
Number of ballsz 26 
Reference grease quantityGref 7.5cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 280N
Static axial stiffness, preload class A  249N/µm
Preload class BGB 560N
Static axial stiffness, preload class B  325N/µm
Preload class CGC 1120N
Static axial stiffness, preload class C  435N/µm
Preload class DGD 2240N
Static axial stiffness, preload class D  595N/µm
Calculation factors
Calculation factorf 1.23 
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  0.47kg
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Hot number: 2302 19974 2315 M 314 NR 718/600 AMB 7022 CD/P4AL 71912 ACB/P4AL FSAF 1518 x 3.1/8 GEZM 100 ESX-2LS K 20x26x12 N 313 ECM NU 208 ECKP OKCX 640 PFT 1.1/2 TF SALA 70 TXE-2LS

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