SKF 7021CD/HCP4AH1 Angular contact ball bearings,SKF 7021 CD/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 7021 CD/HCP4AH1

7021 CD/HCP4AH1

Dimensions
d 105mm
D 160mm
B 26mm
d1 121.9mm
d2 121.9mm
D1 143.1mm
K 0.5mm
C1 6.92mm
r1,2min.2mm
r3,4min.1mm
a 30.8mm
Abutment dimensions
damin.114mm
dbmin.114mm
Damax.151mm
Dbmax.155mm
ramax.2mm
rbmax.1mm
dn 125.6mm
Calculation data
Basic dynamic load ratingC 95.6kN
Basic static load ratingC0 96.5kN
Fatigue load limitPu 3.6kN
Attainable speed for grease lubrication  10000r/min
Attainable speed for oil-air lubrication  15000r/min
Ball diameterDw 17.462mm
Number of ballsz 21 
Reference grease quantityGref 20.4cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 360N
Static axial stiffness, preload class A  129N/µm
Preload class BGB 720N
Static axial stiffness, preload class B  176N/µm
Preload class CGC 1440N
Static axial stiffness, preload class C  248N/µm
Preload class DGD 2880N
Static axial stiffness, preload class D  359N/µm
Calculation factors
Calculation factorf 1.15 
Calculation factorf1 1 
Calculation factorf2A 1 
Calculation factorf2B 1.02 
Calculation factorf2C 1.05 
Calculation factorf2D 1.09 
Calculation factorfHC 1.02 
Calculation factorf0 15.7 
Mass
Mass bearing  1.32kg
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Hot number: 21100 240/750 ECA/W33 7048 ACD/P4A 709 CE/P4A FSNL 516-613 N 317 ECM NU 2336 ECML NUB 213 ECJ OKC 790 OKF 390 PCM 10010550 M PSM 223230 A51 QJ 313 N2PHAS S71924 ACD/P4A W 6003-2RS1/VP311

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