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Message
Calling OT maintenance guys
Posted on 11/1/14 at 2:50 pm
Posted on 11/1/14 at 2:50 pm
I'm looking for a decent digital vibration meter. It will be used on a monthly basis. I see some going for a couple hundred up to a couple thousand. Any brands or experiences will help.
TIA
TIA
5
Posted on 11/1/14 at 2:51 pm to Chatagnier
Black & Decker
Posted on 11/1/14 at 3:14 pm to Chatagnier
What are you trying to do with it? Knowing that will help answer the question.
Posted on 11/1/14 at 3:16 pm to Pretzel Logic
Balancing a 300HP motor
Posted on 11/1/14 at 3:22 pm to Chatagnier
Thats not going to be cheap. SKF makes some if the best ones, but to buy one with the accessories to be able to field balance is very expensive.
Posted on 11/1/14 at 4:28 pm to Pretzel Logic
I'll ask my wife. She's the vibrator expert
Posted on 11/1/14 at 4:55 pm to weadjust
Posted on 11/1/14 at 6:56 pm to Chatagnier
quote:
I'm looking for a decent digital vibration meter. It will be used on a monthly basis. I see some going for a couple hundred up to a couple thousand. Any brands or experiences will help. TIA
This. ... is not a thing. If you can't get it at Lowes, don't worry about it.
If it's some sex toy, then, you might have some issues.
If it's for work, then what do you do, and how much do you make?
Posted on 11/1/14 at 7:00 pm to Chatagnier
quote:
Balancing a 300HP motor
Holy crap. What kind of equipment is this motor powering?
Posted on 11/1/14 at 7:37 pm to Neako27blitzz
quote:
quote: Balancing a 300HP motor Holy crap. What kind of equipment is this motor powering?
I think it's a go-cart. A big one.
Posted on 11/1/14 at 9:55 pm to Traffic Circle
Our skf racks went obsolete and are no longer supported.
Our. Our new Bently Nevada systems are nice and very configurable. Easy to use software.
Our. Our new Bently Nevada systems are nice and very configurable. Easy to use software.
Posted on 11/1/14 at 10:46 pm to Chatagnier
Where do you plan on mounting these ?
Posted on 11/2/14 at 8:02 am to djangochained
Its for work. They are electric motors that run an 8 stage Gould's pump.
Posted on 11/2/14 at 8:08 am to Chatagnier
You really can't field balance an electric motor in the field with taking it apart. Its better to just pull the rotor out and bring it to a machine shop.
A electric motor normally doesn't go out of balance in normal operation.
A electric motor normally doesn't go out of balance in normal operation.
This post was edited on 11/2/14 at 8:12 am
Posted on 11/2/14 at 8:31 am to Pretzel Logic
Its not the motor itself I'm trying to balance. Its the couplings if that helps.
Posted on 11/2/14 at 8:38 am to Chatagnier
Just wondering? What makes you think that the couplings are out of balance? That usally doesn't happen either. If the couplings are out, it usually isn't noticeable.
If it is apparent that the vibration is coming from there, it is most probably an alignment problem.
If it is apparent that the vibration is coming from there, it is most probably an alignment problem.
Posted on 11/2/14 at 8:58 am to Pretzel Logic
You are right it most likely is an alignment issue but we line them up old school. We only allow 2 thousandths for our tolerances and balance them out by moving nuts around on the couplings. I'm just looking for something to read the vibration. We keep the vibration under .3 IPS.
Posted on 11/3/14 at 7:48 am to Chatagnier
What is the RPM of this motor? If it's 1800 or 3600 .3 in/sec is pretty high. You'd be better off doing a laser alignment instead of just eye balling it with a straight edge. If it's something that doesn't have to be done too often, call in an outside PdM contractor and have them align it and check vibration. They could do it much cheaper than you can buy a laser and vibration analyzer for.
Posted on 11/3/14 at 8:05 am to Pretzel Logic
That's what I was about to post, just need a dial indicator and shims for that, but I have never aligned a motor and pump that large.Might be different.
Is the Motor mounted vertically on top of the pump, with mated flanges? You wouldn't even use shims on that, that would be for a horizontal type setup.
If you have it within .002 total, that's pretty close, I wouldn't think Vibration would be much of an issue unless the couplings causing a problem.
Is the Motor mounted vertically on top of the pump, with mated flanges? You wouldn't even use shims on that, that would be for a horizontal type setup.
If you have it within .002 total, that's pretty close, I wouldn't think Vibration would be much of an issue unless the couplings causing a problem.
This post was edited on 11/3/14 at 8:32 am
Posted on 11/3/14 at 8:23 am to Chatagnier
quote:you've come o the right place to inquire about a very large,industrial electric motor for a pump.
Calling OT maintenance guys
Do you work for BP by any chance?
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