SKF 71920CB/P4AL Angular contact ball bearings,SKF 71920 CB/P4AL Super-precision bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71920 CB/P4AL

71920 CB/P4AL

Dimensions
d 100mm
D 140mm
B 20mm
d1 114.92mm
d2 113.16mm
D2 128.7mm
b 2.2mm
C1 10.9mm
C2 4.5mm
C3 2.9mm
r1,2min.1.1mm
r3,4min.0.6mm
a 28.9mm
Abutment dimensions
damin.106mm
dbmin.106mm
Damax.134mm
Dbmax.136.8mm
ramax.1mm
rbmax.0.6mm
dn 116.1mm
Calculation data
Basic dynamic load ratingC 29.1kN
Basic static load ratingC0 36kN
Fatigue load limitPu 0.865kN
Attainable speed for grease lubrication  12000r/min
Attainable speed for oil-air lubrication  19000r/min
Ball diameterDw 7.938mm
Number of ballsz 37 
Reference grease quantityGref 9.96cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 72N
Static axial stiffness, preload class A  60N/µm
Preload class BGB 145N
Static axial stiffness, preload class B  79N/µm
Preload class CGC 430N
Static axial stiffness, preload class C  125N/µm
Calculation factors
Calculation factorf 1.11 
Calculation factorf1 1 
Calculation factorf2A 1 
Calculation factorf2B 1.02 
Calculation factorf2C 1.07 
Calculation factorfHC 1 
Calculation factorf0 10 
Mass
Mass bearing  0.85kg
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Hot number: 1800240 18264 331445 480 VE R 6219 M/C3VL0241 90890 GS 81208 OKC 250 NJ 2334 ECML NU 2222 ECML OKCX 430 OKF 250 RLS 6-2Z S7019 ACB/P4A SI 35 TXE-2LS

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