SKF 71956CD/P4A Angular contact ball bearings,SKF 71956 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 71956 CD/P4A

71956 CD/P4A

Dimensions
d 280mm
D 380mm
B 46mm
d1 311.8mm
d2 311.8mm
D1 348.2mm
r1,2min.2.1mm
r3,4min.1.1mm
a 67.4mm
Abutment dimensions
damin.291mm
dbmin.291mm
Damax.369mm
Dbmax.374mm
ramax.2mm
rbmax.1mm
dn 319.7mm
Calculation data
Basic dynamic load ratingC 291kN
Basic static load ratingC0 455kN
Fatigue load limitPu 10.6kN
Attainable speed for grease lubrication  3200r/min
Attainable speed for oil-air lubrication  4800r/min
Ball diameterDw 30.162mm
Number of ballsz 31 
Reference grease quantityGref 159cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 1090N
Static axial stiffness, preload class A  266N/µm
Preload class BGB 2180N
Static axial stiffness, preload class B  363N/µm
Preload class CGC 4360N
Static axial stiffness, preload class C  509N/µm
Preload class DGD 8720N
Static axial stiffness, preload class D  741N/µm
Calculation factors
Calculation factorf 1.27 
Calculation factorf1 1 
Calculation factorf2A 1 
Calculation factorf2B 1.04 
Calculation factorf2C 1.09 
Calculation factorf2D 1.15 
Calculation factorfHC 1 
Calculation factorf0 16.7 
Mass
Mass bearing  12.9kg
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Hot number: 20x42x10 HMS5 V 293/500 46x68x8 CRW1 R 58x80x12 HMS5 V 7211 BECBJ 7211 BEGAP 7408 BD-C 2234 K-AH 3134 G K 81226 TN N 1010 KPHA/HC5SP N 217 ECM N 28/1060 MB PBM 160180100 M1G1 SAF 22316 SAF 22632 x 5.3/8 T

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