SKF 7220CD/P4A Angular contact ball bearings,SKF 7220 CD/P4A Super-precision bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7220 CD/P4A

7220 CD/P4A

Dimensions
d 100mm
D 180mm
B 34mm
d1 124.7mm
d2 124.7mm
D1 155.3mm
r1,2min.2.1mm
r3,4min.1.1mm
a 35.9mm
Abutment dimensions
damin.112mm
dbmin.112mm
Damax.168mm
Dbmax.173mm
ramax.2mm
rbmax.1mm
dn 131.4mm
Calculation data
Basic dynamic load ratingC 156kN
Basic static load ratingC0 137kN
Fatigue load limitPu 4.9kN
Attainable speed for grease lubrication  7500r/min
Attainable speed for oil-air lubrication  12000r/min
Ball diameterDw 25.4mm
Number of ballsz 15 
Reference grease quantityGref 40.899cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 590N
Static axial stiffness, preload class A  122N/µm
Preload class BGB 1180N
Static axial stiffness, preload class B  165N/µm
Preload class CGC 2360N
Static axial stiffness, preload class C  230N/µm
Preload class DGD 4720N
Static axial stiffness, preload class D  331N/µm
Calculation factors
Calculation factorf 1.09 
Calculation factorf1 1 
Calculation factorf2A 1 
Calculation factorf2B 1.01 
Calculation factorf2C 1.03 
Calculation factorf2D 1.05 
Calculation factorfHC 1 
Calculation factorf0 14.5 
Mass
Mass bearing  3.24kg
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Hot number: 11081 20109 22344-2CS5/VT143 25x45x10 HMSA10 RG 26x47x7 HMSA10 V 619/560 MA 63796 87924 FSYE 3 15/16 NNCF 5048 CV OKC 060 PCMS 2005002.5 E SAKAC 20 M W 61908-2RZ SYWK 505 Y

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