SKF 71909ACB/P4AL Angular contact ball bearings,SKF 71909 ACB/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 71909 ACB/P4AL

71909 ACB/P4AL

Dimensions
d 45mm
D 68mm
B 12mm
d1 53.45mm
d2 52.4mm
D2 61.8mm
b 2mm
C1 5.9mm
C2 2.8mm
C3 1.7mm
r1,2min.0.6mm
r3,4min.0.3mm
a 22.1mm
Abutment dimensions
damin.48.2mm
dbmin.48.2mm
Damax.64.8mm
Dbmax.66mm
ramax.0.6mm
rbmax.0.3mm
dn 54.2mm
Calculation data
Basic dynamic load ratingC 9.56kN
Basic static load ratingC0 9kN
Fatigue load limitPu 0.232kN
Attainable speed for grease lubrication  24000r/min
Attainable speed for oil-air lubrication  38000r/min
Ball diameterDw 4.762mm
Number of ballsz 27 
Reference grease quantityGref 1.75cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 41N
Static axial stiffness, preload class A  74N/µm
Preload class BGB 82N
Static axial stiffness, preload class B  95N/µm
Preload class CGC 245N
Static axial stiffness, preload class C  143N/µm
Calculation factors
Calculation factorf 1.08 
Calculation factorf1 0.99 
Calculation factorf2A 1 
Calculation factorf2B 1.02 
Calculation factorf2C 1.07 
Calculation factorfHC 1 
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  0.13kg
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Hot number: 13661 525031 6213-RS1 87461 BT4-8126 E1/C575 FSAF 22515 x 2.1/2 TLC HE 319 K 35x40x25 NNCF 4916 CV NNU 4932 BK/SPW33 PFT 1.1/2 TR S71914 ACD/HCP4A SAF 22511 x 2 T SAL 60 ES-2RS Z 213 F

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