SKF 71944ACD/P4AL Angular contact ball bearings,SKF 71944 ACD/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 71944 ACD/P4AL

71944 ACD/P4AL

Dimensions
d 220mm
D 300mm
B 38mm
d1 244.7mm
d2 244.7mm
D1 275.3mm
b 3.5mm
C1 20.9mm
C2 7.1mm
C3 5.45mm
r1,2min.2.1mm
r3,4min.1mm
a 79.9mm
Abutment dimensions
damin.231mm
dbmin.231mm
Damax.289mm
Dbmax.295mm
ramax.2mm
rbmax.1mm
dn 251.4mm
Calculation data
Basic dynamic load ratingC 208kN
Basic static load ratingC0 285kN
Fatigue load limitPu 7.5kN
Attainable speed for grease lubrication  3800r/min
Attainable speed for oil-air lubrication  5600r/min
Ball diameterDw 25.4mm
Number of ballsz 29 
Reference grease quantityGref 84cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 1300N
Static axial stiffness, preload class A  533N/µm
Preload class BGB 2600N
Static axial stiffness, preload class B  699N/µm
Preload class CGC 5200N
Static axial stiffness, preload class C  934N/µm
Preload class DGD 10400N
Static axial stiffness, preload class D  1275N/µm
Calculation factors
Calculation factorf 1.28 
Calculation factorf1 0.98 
Calculation factorf2A 1 
Calculation factorf2B 1.04 
Calculation factorf2C 1.08 
Calculation factorf2D 1.14 
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  6.6kg
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Hot number: 15041 2211 EKTN9 16680 207-Z 30321 33217T145/DB 51260 M 61852 7012 ACB/HCP4AL 99116 NK 55/35 PCZ 1416 M RPNA 25/42 W 634 R XHCE 055/OK 160

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