Activity

Reply by William_C._Foiles

High vibration, angles nearly in phase? These are symptoms consistent with a natural frequency. Mounted on a vibration pad - what type?
William_C._Foiles

Reply by Kishore kumar

Dear Ralph , 1.i am not sure about what they done , but they said we have done all the recommendations like Structural looseness...
Kishore kumar

Reply by Rotating Guy

If i am at your position, i would scrutinize the problem 1st and eliminate other possible forces before i attempt to unbalance.
Rotating Guy

Reply by Rotating Guy

Hi Raul, I don't suspect yet a unbalance, but i would clear all factors, i am suspecting looseness, and i am rooting at HM DE...
Rotating Guy

Reply by Ralph Stewart

Have you previously posted data on this same fan? Question #1: Did you confirm that they had taken care of the corrections as you ask?
Ralph Stewart

Reply by Kishore kumar

Its a Overhung Fan and i insisted for corrections before balancing , they said they have done .Our clients has to take care of that ,...
Kishore kumar

Reply by Shurafa

If I were you I would go back and try to eliminate other possibilities before any further balancing steps.
Shurafa

Reply by Ralph Stewart

Question: Is this an Overhung Fan or Center Hung fan? After looking closer at the data you have posted here, seems like the motor has a...
Ralph Stewart

Reply by John from PA

Alert, OP posted same content at http://www.machineryanalysis.o...57479?pid=1305586545 IMO, you should take corrective actions of the...
John from PA

Reply by Becar

Your phase angles between H and V are very close, so I suspect some bearing/housing increased clearance, untightened bolts or...
Becar

Reply by Jim

Depends on the pressure, type of leak (tear, crack, piping, distance) at the leak site. Typically, ultrasound is rated at finding a leak...

Reply by aziz58

According to the real time graph I think you have pulse vibration by 200hz frequency .as John mentioned it can be hunting frequency

Reply by William_C._Foiles

My intent was not imply that axial position would necessarily purely increase with loading. The position may change directions,...
William_C._Foiles

Reply by John from PA

I've only worked on one of those machines and as best I recall it used a double helical gearbox to reduce the power turbine speed from...
John from PA

Reply by PaulEngr

I see what the real problem is. Ours is the older documentation linked below. The newer documentation clearly states that it's the...
PaulEngr

Reply by aziz58

Thanks, Williams Other turbines work under limit axially movement value .all turbines at the same load and speed. I am suspicious to...

Reply by William_C._Foiles

How does this value compare to the axial float check? This may not be too alarming. Depending upon the design of a gas turbine, the...
William_C._Foiles

Reply by rgf12

PAULENGR-very well stated. I agree that the Mobil Polyrex product is the most universally used motor grease and is suitable for all but...
rgf12

Reply by PaulEngr

I doubt it's the sensor's fault. When you use the electromagnetic type partial discharge measurement devices they go nuts around the...
PaulEngr

Reply by PaulEngr

MOST motor bearings are greased with a high temperature non-EP polyurea grease with a base viscosity right around 95-100, NOT lithium...
PaulEngr

Reply by aziz58

As an fit attachment, 200hz have high amplitude and all harmonics have been low amplitude. What kind of blower? Does it lobe? Maybe...

Reply by Kishore kumar

Dear Sir , yes it is 2X of Gear O.P shaft but what about the Fan readings , is not there provision to take Fan readings , i think fan...
Kishore kumar
×
×
×
×