Balancing a Large Impeller
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- เผยแพร่เมื่อ 19 ส.ค. 2012
- www.koffler.com Balancing a large impeller, for de-watering pump from a submarine dry dock located at Pearl Harbor, Hawaii. KOFFLER has the capability to Dynamic Balance rotating equipment such as armatures, rotors, and fans up to 20 Tons.
KOFFLER Electrical Mechanical located in San Leandro, CA. USA
For more information call us at 510-567-0630 - วิทยาศาสตร์และเทคโนโลยี
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0:46 sticking the plasticine on takes me back 53 years to when I was apprentice and making rollers for textile machines and had to balance them by using plasticine and then getting equal weight bit of steel to weld into roller end.
On plain shafts it was just as easy to balance by touch as finger tips are accurate to quarter-thou of bounce.
We were engineers in those days!
Amazing and great craftmanship, thx for sharing!
great work!
I had a roller bearing fail in the balance machine with a 5 ton steam turbine rotor in the saddles. The bearing seized and began to dig into the journal. Despite flooding it with a can of 50/50 STP and lube oil the bearing caught fire as the rotor coasted down. Scared the hell out of me! Cost the company a lot of money to repair that rotor. The saddles were rated for 10 tons but something went wrong.
Great video,
very useful for new professionals
so cool, this video is inspiring for me :D
Nice job
I was doing this with shafts for textile machines about 53 years ago.
Rose I built automatic transmissions for 30 years, I know some of your magic made them better. I am in need of a basic unlimited drive load to a sustained operable speed load(aka harmonic balancers). please help me to free the world.
And I'm currently doing the exact same thing 57 years later with a current job
@@scottwatts4897 describe your project and available equipment?
good job ...
Hurrah for the fellows who have the skill and patience to do such work.
Brian Skinner Know how.
MrShobar --- I just retired after 45 years as a carpenter. My Dad and men like him taught me how to do and how to learn. I really appreciate know how.
Me too. Thanks.
Would of been nice too see a beveled edge on the weights and flush or domed fixings?
I guess those weights don't effect where the cowling meets the edge once installed? Or maybe anything below the brass circle is open space?
Nice work everyone.
Did you use Red lock tight on those bolts lol?
Good vid . High speed pulp and paper roll balancing is much more involved than this. the end hubs and shafts get balanced then the roll shells themselves get balanced with internal weights along the shell at different points , can be 20feet in length this is all done as a assembled unit! When you have paper say 2 thousands thick you can get the picture how critical the roll balance must be and depending on speed certification required this is a arduous process indeed. Years ago before the computer this was all done with dial indicators. (old timers would know) depending on it's application it all really boils down to a balancing act ( pun)
Super interesting video,
I am wondering why they use copper inside the impeller instead of more cheaper material,
And what influence can paper do on the balancing operation.
1 year later, but I’m guessing it’s either bronze or brass. But either way. Bronze, copper, and brass are all extremely good against corrosion. The video said this Impeller was going in a submarine in Pearl Harbor.
Plasticine is great for shop balancing, you do all the trims find the angle and put just one permanent correction
Please, how much was the rotor weight? And the balancing weights? Thanks!
Why is there imbalance? Is it because the material is not uniformly dense?
IRD 246, nice!!!
I would imagine that your test fixture would have to be aligned such that the machine under test has it's shaft oriented in a due north and south direction, to prevent gyroscopic precession caused by the rotation of the earth, since the bearings are free floating...
+realvanman True North or Magnetic North? What about deviation progression during the machines service life?
That would be true north.
I wanna see that pump rotor at say, 3000 RPM
We all know what would happen of course!
You don't run rotors at their actual running speed on these machines.
nice
0:00 The 80's music suggests they haven't innovated since then...
You'll unbalance it by painting the balancing weights! LOL j/k
what is the name of this temp weights?
Good
Coooooool
cool
but on site this impeller will rotate on a higher RPM
hey looks gyroscope for electric dynamo central
👍👍❤
what is that thing they first put it on the rotor that's like some dough?!does it have a special commercial name?
Who knows! Some sticky lead
just ordinary clay. its a way or getting your weight figured out little by little and each location without it being permanent.. some shit head i worked with for twin city fan would balance in the morning would leave it on there rather than putting the fixed weight on it. god he was a lazy piece of shit. who know how many fans in the field went to hell thanks to him.. lol at least i didnt do them or sign off on them.
duct seal
wish i worked in a engineering facility instead of a tradesman.
le mieux c'est d'usiner pour enlever de la matière dans le sens opposé ça va plus vite et plus de sécurité
I thought with those California safety laws there would be a cage around this to prevent anyone getting to close....
I need balancing machine for on site balancing impeller blower / fan
Please contact Sanjay Mahajan at 9831424647, for Electronic Dynamic Balancing Machine.
gool
do it too more times
The workshop is untidy hope it does not reflect on the balancing job!
it reminds me a lot of a shit hole I used to work in
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Without applying the equations (learn in engineering classes) and formula you did it .😊
This whole process zoomed right over your head little buddy.
1 mill?? Better be super slow
If only they had a clown like you to run things...Why they could be as successful and profitable as you....Post a link to you video..You know the one showing how you would do it????
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Hi
how much the machines price pls contact me impeller Balancing Machines size Max Dia 1500 mm.
I have it. If you intrested contact what's apps 00923337638238
Please contact Sanjay Mahajan at 9831424647, for Electronic Dynamic Balancing Machine.
@@sanjaymahajan7668 14 feet length
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Why was it so unbalanced?
Because it wasn't balanced yet...
@@SmeurkeDeKat I thought it was a used propeller
To me this is rather a "weak" video. They could have provided a great deal more information with narration and a well thought out delivery. Uhmm?