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Ralph Stewart

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Reply with quote  #31 
Danny,

Thanks for your kind words in your reply, in posting #17.

I honestly hope I am wrong in my guess, based on this single 100 Hz Fmax spectrum. The waveform for this spectrum might have helped a little.
Maybe it is just a flaking surface failure developing and can run a while longer.
This is a fairly huge bearing, rather expensive and a little difficult to change.
As an old millwright, I have been down that road.
Time will tell.
[smile]

I just would have liked to been able to see, on my computer, all the data available on the bearing, but seems it's not going to happen. [comp]

May be a company policy not to share. [smile] I can understand that.

I have a lot more questions I could ask, but have not gotten any direct answers to the couple I asked so far, so I will just sit back and watch. Have been accused of talking too much and never saying anything. Am well noted for my many questions. Have learned never to assume anything without supporting facts.[smile]

Thanks again Danny.

Thanks and Have a Great Day,
Ralph




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Ralph Stewart
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Reply with quote  #32 
I'm with Ralph and Danny, really big call so will sit back and watch unless a DB is posted.  We all talk too much Ralph, that is in our diagnostic nature and detail.  Best you and I don't meet because we would talk for many days.  And that is meant in a good way in case the Aussie / American understanding gets in the way. And then add Danny and Rusty and others and we would be really in trouble.  LOL!!
OLi

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Reply with quote  #33 
Pls. look careful on the trending, one or 2of the latest similar cases have increased pretty quick. Normally you could follow a damage at such low speed for months and in a few cases a year but lately it's been cases where they pop up quick and trend is increasing in days and weeks not months. I think it may be related to how hard they run the machines as the bearings have been running for 15-18 years before they have these failures. So start to get a new bearing if you don't have one.....
Yes we could likely have story telling marathon somewhere :-)

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Vibe-Rater

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Reply with quote  #34 
I would love to meet you OLI, I think I did meet your counterpart here in Melbourne but can't remember name. And would love to meet others too. I was in Gothenburg 2006..? and tried to meet your brother Arne but didn't work out time wise. Such a long way to go and then not be successful.  At that time I did meet up with the grandfather of all things SKF in the Netherlands so that was fantastic. Anyway. Just reminiscing. rgds
OLi

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Reply with quote  #35 
Well, we sold our training material once upon a time to SKF to get them started with vibration :-) so they used that for quite some time. That material was made to train turbine mechanics in the before time and we still use it as the basic vibration don't change, only the ways to display graphics.
I once was at some gathering in Montreal where the hotel staff at some point later in the evening asked us to shut up as the laughter kept the whole hotel awake :-) so it would be nice. I also went to some similar in Florida and some oldies said as I passed their table "you'r that guy that writes on the forum huh?" so the world is small and we all have the same problems as the machines obviously misbehave the same allover so that is nice.

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David Eason

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Reply with quote  #36 
Vibe-Rater asked about the lube oil system and I haven't seen any other comments about it. The lube system usually covers the dryer and the gearbox, there's lots of bearings and gears in there.

David
OLi

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Reply with quote  #37 
In best case you have separate returns from main parts or you can drain a sample at the bearing return directly or not and it is the gbx....
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Ralph Stewart

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Reply with quote  #38 
Quote:
I'm with Ralph and Danny, really big call so will sit back and watch unless a DB is posted.  We all talk too much Ralph, that is in our diagnostic nature and detail.  Best you and I don't meet because we would talk for many days.  And that is meant in a good way in case the Aussie / American understanding gets in the way. And then add Danny and Rusty and others and we would be really in trouble.  LOL!!


[smile] LOL.

Thanks Vibe-Rater.

  It would be nice to see some of you guys face to face. [smile]

Have a Great Day,
Ralph

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Ralph Stewart
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