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Tagged With "Alignment"

Topic

180 Degree Phase shift in Horizontal

JoelR ·
Good morning everyone, I'm currently monitoring a motor-coupling-flywheel-coupling-pump and have picked up near 180 degree phase shift in the horizontal direction between the motor-flywheel and between the flywheel-pump about 170 degrees in the vertical direction. The machine was only recently aligned to below .05mm so I'm a bit stumped as to why I'm seeing this. my thoughts are thermal expansion but wanted to see what everybody else's thoughts are. Thanks
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alignment of NTM modules in Long product Mills

sany ·
Hi, Any1 having idea of doing LASER alignment of NTM(No twist Mill) line shaft in LP Mills?
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Balancing of fan

vishal sharma ·
Dear all i am dealing with a RAW mill simple supported system fan 2500 kw motor with 990 r.p.m . The spectrum in DE bearing showing 1X with an amplitude 3.8mm/s overall vibration is 4mm/s in DE bearing in horizontal direction. vertical: 1.2 mm/s Axial: 1.4 mm/s but at NON DE side bearing we are having 5mm/s overall vibration in horizontal direction. the spectrum in NDE bearing showing 1X with an amplitude 3.9mm/s . vertical vibration is :1.8mm/s Axial: 2.4 mm/s by doing time wave form...
Topic

Bolt bound, Alignment in horizontal position

CharlieRB ·
All; What methods or techniques do you use to resolve a horizontal bolt bound condition when performing a routine alignment task? Do you ever slot the foot bolt holes? Do you beg for more time from the powers-that-be to allow you to attempt to reposition the driven component? We have encountered what we believe to be situations where the OEM has not adequately aligned the component and modifications to the mounting base is required. Does slotting the holes of the feet have an adverse long or...
Topic

Causes of unbalance in rotating machinery

Maintenance Training ·
WHEN SPINNING EQUIPMENT IS OUT OF BALANCE When spinning equipment is out of balance. Vibration from out-of -balance rotating equipment can be frightening. The ground shakes, machines jump about, hold down bolts come loose and parts break. An unbalanced rotating body will produce forces on its bearings and transmit them throughout its structure and into the foundations. The drawings below provide examples of some of the problems listed in the table above. CAUSES OF OUT-OF-BALANCE Below lists...
Topic

Cold alignment values in preheater fan to kiln

vishal sharma ·
Dear expert Can u suggest me what is the permissible radial alignment in preheater ID fan to kiln. As the temperature in the fan during running condition is almost 300 degree . Because three months before we have a call from the customer from cement plant they were facing high axial vibration in there fan.so we checked the fan vibration reading it's showing 3.6mm/s in radial but axial was 6.3mm/s .so now after three months they call us again because the customer is in shut down they call us...
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Re: Laser Shaft Alignment - Recommendations

Walt Strong ·
If you have several different brands already, why can't you make a list of pros and cons and choose amongst them? Why would you even consider choosing a brand that you don't even have it all? Do you even know what features are important to you? Have you personally used each of these brands your company has, or are you relying on the user experience from others in your company? What upgrade features do you think are really important for the types of equipment and personnel skill levels you...
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Re: Laser Shaft Alignment - Recommendations

Bassnjunky ·
Walt, Regarding listing pros and cons for our existing units is irrelevant due to the age of the units. Why would we choose a brand we do not have? - It only seems practical to way all options with all units - new and old. Yes, I do understand what features would add value for my team - I did not want to lead/restrict opinions. Yes I am an experienced user in my past but also open to "constructive" feedback from those that utilize these tools on a daily basis. I appreciate your time in...
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Re: Laser Shaft Alignment - Recommendations

IrishMark ·
Well ask yourself this 1. whats the maximum span between measurement points you need? 2.do you have a vertical alignment requirement? 3. Do you need to align a multiple train e.g motor gearbox Pump/fan/etc? or is it simpler machines? Motor coupling Pump/fan etc? 4.Do you require the ability to generate conformance reports from the aligned equipment?
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Re: Laser Shaft Alignment - Recommendations

Rotate ·
We use the Pruftechnic Rotalign IS. However, we are an alignment consulting group. We use all the features of the box, shaft alignment, bore alignment, vertical machine alignment, level alignment, etc. It is also NIST traceable which is a requirement for some of our projects.
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Re: Laser Shaft Alignment - Recommendations

Torptorp ·
I also feel like IrishMark. Figure out what you need to accomplish with the alignment goals you need. Write down that list. Then bring in different vendors to demo their products. Prufteknik Rotalign Ultra iS are great machines (we use them here) But not everyone needs everything that it can do. There are many companies selling alignment systems... Some work great for very basic get it in the ballpark alignment. But you get what you pay for. Don't get hung up on cost alone. If the alignment...
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Re: Laser Shaft Alignment - Recommendations

Vendor Disclosure. You could give Stealth Series Alignment products a try (product of Hamar Laser-50 year veterans of the industry and American made)...www.stealthalignment.com or www.erbessdreliability.com Give us a call or shoot us an email we would be happy to help.
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Re: Laser Shaft Alignment - Recommendations

Akhil Rathore ·
give a try to SKF make TKSA 11 & do the alignment using your phone also would suggest you to check the max shaft size length you need to align,
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Re: Laser Shaft Alignment - Recommendations

Big J ·
We have a TKSA 11 as well. Comparing that to a rotoalign is like comparing a Yugo to a Ferrari. They both serve a purpose. The interface on the TKSA 11 is the easiest I have used. I could teach someone with little alignment experience to use it in 5 minutes, however, it is very limited in the span between measurement points....I have begun to appreciate the companies that take a product like an iPad and use it for our purposes. The cost savings and ability to update the products quickly is...
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Re: Laser Shaft Alignment - Recommendations

DBTCMP ·
Big J the TKSA51 will cover up to 5metre centres and has similar user interface. Tksa11 is only for smaller pumps 18cm centres.
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Re: Laser Shaft Alignment - Recommendations

vishal sharma ·
TKSA 41 is best it also cover the distance upto 5m and easiest to use.
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Re: Laser Shaft Alignment - Recommendations

fburgos ·
I have a TKSA 80 and a Hamar Laser Stealth S680 both gets the job done, ive also used the Stealth S650. But i prefer the S680 over the tksa80 Pros. Reporting is easy and clear, pdf format ready to email on site. Windows 10 tablet, if it brakes on site easy to replace with any other pc/tablet/laptop. Bluetooth range is great, bluetooth on TKSA80 you have to keep sensors and tablet close to each other or direct view or else will have conection problem. Complete history of the machine, for a...
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Re: Need Advise Please-alignment tool recommendations-

Onur Gün ·
We use Optilign Smart and I can recommend Prüftechnik. Stability is good and you can get repeatable results by the way. I think it is the most important point at this kind of tools. Otherwise you can go off the rails while alignment.
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Re: Balancing of fan

Ralph Stewart ·
questions: (1) Is it a centerhung or overhung fan? (2) Can you show us the impacting waveform? (3) Have you tried and failed with a single plane balance or are you planning on a single plane first or multi-plane balance first? (4)The 110 degree phase on the DE, what is the 110 referenced to, a refelection "tape" position on the shaft or reference to the NDE bearing? Thanks, Ralph
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Re: Balancing of fan

vipul@cmc ·
Waht is Displacment on DE & NDE brgs. @1x vibration rpm ? What is Phase diffrence on DE brg.between H & V Directions.? Have you properly cleaned the impller of Fan ?
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Re: Balancing of fan

Walt Strong ·
"So my question is can we perform Dynamic Balancing ??" Yes, if rotor is accessible to add/remove balance weights. "if yes will we get satisfactory results?" Yes, if rotor is clean and no cracks or looseness and bearings are tight and in good condition. You should also inspect bearing pedestals/housing for loose bolts and foundation (steel, concrete, grout) for significant cracks. Walt
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Re: Balancing of fan

vishal sharma ·
1 it is centrehung fan 2. i am planning for single plane balancing but i have some doubt in fan NDE bearing. 3 phase reference 110 on DE side is w.r.t to reflection tape position on shaft.
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Re: Balancing of fan

vishal sharma ·
phase differnce is 110 degree at fan DE side from H & V FAN IS PROPERLY CLEANED NO DUST IS THERE
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Re: Balancing of fan

vipul@cmc ·
You can do single plane balancing
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Re: Balancing of fan

vishal sharma ·
BUT i see some impacts in time wave form of NDE bearing. i am worry about that and on NDE bearing phase is not stable from H &V .
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Re: Balancing of fan

Ralph Stewart ·
Your waveform looks like there is a modulation (angelfish) pattern associated with 1x. Gs are fairly low, but concern-able. Also might have several (4 or 5) harmonics of 1x in the spectrum. There may be a problem with the inner race. Can you post a few spectrums of both bearings, horizontal and vertical? What is the phase relationship between the Horizontal DE and the Horizontal NDE (for balance reasons)? Is the fan actually centered between the bearings or is the rotor offset more toward...
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Re: Balancing of fan

Walt Strong ·
A center hung rotor with wheel between bearing can be symmetrical with double air inlets or asymmetrical with single air inlet. Single inlet fans can be balanced by single plane method with care. While it would be better to fix the bearing first, it may take less time to trim balance and extend the bearing life to a more convenient outage. Walt
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Re: shaft alignment

Walt Strong ·
Why are you starting a new discussion for the same topic? You did not respond to my comments. Walt
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Re: shaft alignment

shrestha1 ·
Dear Walt, Sorry for the reply.Actually i am waiting for the particular methods once the GE member starts alignment in the field. just wait and watch situation . Once i play around with them for the method ...i will reply you thanks
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Re: Cold alignment values in preheater fan to kiln

Rohit02 ·
Alignment of machines running at high temperatures requires initial offset so the machines aligns when the thermal expansion takes place. Talking about the amount of offset and the direction of offset manual is to be referred for protocol readings.
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Re: alignment of NTM modules in Long product Mills

Walt Strong ·
I have not aligned a NTM. If there are multiple flexible shaft couplings, then there are two procedures to consider: 1) laser measurement at each coupling (like most machines) 2) laser (or optical) transit of each bearing housing to common reference point I did align a 65-ft long machine train with 7-couplings. I measured each coupling with laser-optical system. I then determined the best moves (H and V) of each component by graphical scale drawing and calculated with spreadsheet. It was not...
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Re: 180 Degree Phase shift in Horizontal

fburgos ·
Thermal expansión is one reason, do you have a flywheel sketch? I've only seen flywheel assembly as rigid on both sides, rabbet fit damage or dirt, improper torque can cause improper alignment of the connecting shafts
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Re: 180 Degree Phase shift in Horizontal

Dave Reynolds ·
Possibly a weak machine foundation. You can align the unit at rest, but when it is running the weak base flexes and shows misalignment Dave
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Re: Balancing of fan

vishal sharma ·
the problem has solved. we did two plane balancing now the vibration reduced from 7mm/s to 2 mm/s. fan DE: 1.8mm/s fan NDE: 2.1 mm/s thanks for your suggestions.
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Re: Balancing of fan

Walt Strong ·
Vishal, Thank you for your feedback. Walt
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Re: For Sale - Emerson CSI 2130 Machinery Health Analyzer Balancer Laser Alignment

Kishore kumar ·
What is the cost in I.N.R , Will you ship to india .
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Re: For Sale - Emerson CSI 2130 Machinery Health Analyzer Balancer Laser Alignment

Y.MECH ·
Hello sir, I am interested in your offer of CSI 2130, is this still available. I live in Algeria. My email is : y.mecherak@gmail.com thank you for your return
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Re: For Sale - Emerson CSI 2130 Machinery Health Analyzer Balancer Laser Alignment

Nagaraja ·
Can I know the price in INR plus postal charges. Can u mail me on diagnosticengineers@gmail.com Madhusudan
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Re: For Sale - Emerson CSI 2130 Machinery Health Analyzer Balancer Laser Alignment

Kishore kumar ·
mail your price details with shipping charges to modiecv@gmail.com
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Re: Need Advise Please-alignment tool recommendations-

John from PA ·
What types of machines are you aligning? Something that is close coupled (motor direct drive to a pump) or at the other extreme a cooling tower drive with a 25 foot composite shaft? It can make a difference and you haven't specified what you are aligning or the industry type.
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Re: Need Advise Please-alignment tool recommendations-

Mark Cloutier ·
Please email and Can send a recent specification for alignment equipment. MCloutier@maconwater.org .
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Re: Need Advise Please-alignment tool recommendations-

Chris184 ·
John, I imagine it would be mostly the standard NEMA frame motors and whatever they are driving. Given the nature of the request, as all encompassing as possible. I have had request for both examples you've given.
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Re: Need Advise Please-alignment tool recommendations-

Dustin Faust ·
I haven't used or seen the Rotalign Ultra IS, but I have been using Pruftechnik Equipment for the last 7 years, and wouldn't recommend anything else. We currently use the Optalign. I like the quick report features, the wireless heads, and the maintenance workers find it simple to use.
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Re: Need Advise Please-alignment tool recommendations-

DBTCMP ·
If you just intend horizontal alignments and don't require atex compliance I would recommend an SKF TKSA41. I have just come off a day training guys in the operation of it and yeah while I am biased....I can say with confidence it's a very user-friendly and capable unit. https://www.youtube.com/watch?v=cQxjYplrsRg
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Re: Need Advise Please-alignment tool recommendations-

czJKr ·
The Rotalign device is regarding to me the best choice at all. If you want, you can use the Rotalign heads technology with Emerson CSI2140 device. Pruftechnik was an inventor of these technology. That is the reason all other uses more-laser/detector technology. The Rotalign system is very precise and can easy reach/meet excellent results. Few times I compare any other system with Rotalign. Results was always very acurate, repetitive and quite easy to take/measure. As you can read on an old...
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Re: Need Advise Please-alignment tool recommendations-

fburgos ·
Hamar laser, their stealth line are great products
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Re: Bolt bound, Alignment in horizontal position

John from PA ·
Your use of "routine alignment task" makes me ask the question is this a first time alignment, or is it a machine that has been in extended service and for some reason is being realigned? If it is a machine that has been in service, one has to ask a few questions: 1. Was it ever aligned properly? 2. Could there be some foundation issues that have caused a shift in machine position? If so perhaps those issues need to be properly addressed first. 3. Is there improper use or maintenance of pipe...
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Re: Bolt bound, Alignment in horizontal position

Big J ·
I prefer to neck down the hold down bolts over slotting the equipment. I worked at a chemical plant that had all of the pump base plates built at a local fab shop and nearly every pump was bolt bound to some extent. We necked down bolts on a ton of motors and never had an issue. On a few of the grossly bolt bound motors we used a tapered ream to oversize the motor holes and use belleville spring washers on the hold down bolts. If pipe stress wasn't an issue on many pumps we could move the...
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Re: Bolt bound, Alignment in horizontal position

Dustin Faust ·
I have found that drilling out, or slotting the mounting base is more effective in the long run. So the same problem does not occur when the motor is replaced. If the mounting bolts are threaded into the base instead of through bolts, then as Big J said. necking down the bolts, or buying shouldered bolts is what I often did. If you modify the motor feet, then this needs to be done every time the motor is replaced.
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Re: Bolt bound, Alignment in horizontal position

CharlieRB ·
All, thank you for your input, it is greatly appreciated. Charlie
 
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