SKF 71809ACD/P4 Angular contact ball bearings,SKF 71809 ACD/P4 Super-precision bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71809 ACD/P4

71809 ACD/P4

Dimensions
d 45mm
D 58mm
B 7mm
d1 49.6mm
d2 49.6mm
D1 53.6mm
r1,2min.0.3mm
r3,4min.0.15mm
a 15.5mm
Abutment dimensions
damin.47mm
dbmin.47mm
Damax.56mm
Dbmax.57.2mm
ramax.0.3mm
rbmax.0.15mm
dn 50mm
Calculation data
Basic dynamic load ratingC 4.62kN
Basic static load ratingC0 5kN
Fatigue load limitPu 0.212kN
Attainable speed for grease lubrication  20000r/min
Attainable speed for oil-air lubrication  30000r/min
Ball diameterDw 3.175mm
Number of ballsz 31 
Reference grease quantityGref 0.36cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 41N
Static axial stiffness, preload class A  87N/µm
Preload class BGB 125N
Static axial stiffness, preload class B  139N/µm
Preload class CGC 250N
Static axial stiffness, preload class C  189N/µm
Calculation factors
Calculation factorf 1.24 
Calculation factorf1 0.97 
Calculation factorf2A 1 
Calculation factorf2B 1.08 
Calculation factorf2C 1.15 
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  0.039kg
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Hot number： 1181560 23040 CC/W33 294/900 EF 585 VRME R 6418 FSAF 22313 TLC FYTJ 30 TF GE 45 CJ2 GS 89309 MB 3 N 2207 ECM NCF 2916 CV NK 19/16 NU 3192 ECMA/HB1 SY 20 TDW

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