Good morning. Looking for some input on Shaft interlinkage via vibration. HP seems to have had the most, and to have caused secondary vibrations. This is not a tri Shaft Isolate machine, Shafts share a common airspace, and at extremely close quarters. What caused the damage to the Stub pipe? Again, the bore/align may have been off, but the wear evident in the pipe's interior bore shows excessive amounts of bore expansion, vibration??
Is vibration the source of damage to the HPIP structure?? Is it also due to insufficient strength causing flex in the diaphragm's field?What about the extra RPM's and Contra rotation?? Is there fatigue here? Are the bearings susceptible to damage and axial drift due wear from vibration and vibration instigated lack of oiling??