Greetings from The Netherlands. At the age of 13 (1966) my neighbor asked me if I was interested to do some work during the summer holidays. I had trouble at my previous school and was interested in electrotechnical stuff. He was rewinding electro motors. I started taking ball bearings of broken down electro motors. Legally I was not allowed to work at that age, but I did very well and learned a lot about these things. After that summer holidays I went to a technical school and learned other things. Next year I went back to the electro company and learned a lot more. The year after the 3rd summer vacation in that company it entered the electrotechnical classroom in that school and recognized all the types of electro motors. I started talking about it to my new electro teacher ;-) . He made a remark that it was special I recognized those different motors. I told him I could even explain to him how they worked and even how the windings were calculated and replaced. I saw him getting white around his nose... What am I going to do with you? You know more at this moment than I will ever teach your classmates in the next two years! I became a measurement- and control engineer. You brought back lots of memories. Thanks
Hello, I'm living in France and I'm 23 years old. I'm an electrical engineering student and now I'm doing me thesis about electric machine. But I do struggle to understand practical model of them, there are much different types. I really respect for your experience
Brings back memories of my days in the navy. interesting to see what has changed and what has not changed in 50 years. My ship was deployed as flagship for 6th fleet and we were all alone. No facilities for support and no tender, so the ship's electricians were always rewinding motors. As I recall the largest was a fire-pump motor, 400hp. Those guys were great.
Thank you for sharing the rewind. As a kid I was always fascinated with motors and how to rewind them. There were some books I learned from and as a hobby would get these motors that were smoked and rewind them. From what I have learned by reading, was able to take the bare stators and calculate the turns and CM to fill the slots. To calculate the CM, I'd just fill the slot with a hank of say 17ga wire and had the volumn. I could wind 3 phase motors to single phase and had to start from scratch. I used 5 coils per pole in a four pole 36 slot stator. The coil pattern I copied from a Westinghouse motor, span slots 1and 7. The poles would overlap on the outside coil. I think this was to help reduce harmonics ? ? Well, That was many years ago and don't remember how to do that math anymore. Now I have a new, ! ! ! well getting older hobby that bacically doing nothing (retired) as very soon will hit 78 years. Your well done video brings back memories and I'm impressed with the task you have done. To me that is beautiful the way you done up the inside that motor. Too bad it has to be covered up but, yes the protection . I do appreciate the old open motors which you could see the formed coils. Take care ........... Gary
Gary that is one heck of a story and I would like to thank you for sharing and your kind words. We are very pleased you enjoyed the video and hope that we can keep providing content you find interesting. Feel free to subscribe to our channel so you get notified when we come out with a new video. We have a couple new videos that are in process of being edited and will be published soon. Thanks again Gary!
This video has helped me understand why when i tell my customer his replacement motor is going to cost $7300... These are completely hand built and tested by experts using expensive materials... Thanks guys for keeping our industrial world humming...!! ⚡️⚡️💪
@@MrMaxyield you're probably correct about the cost. Seemed like 125hp vertical sells for $14k new online... This shop had a lot of people working on rewinding this motor if they're only charging lets say $7k .
I remember tagging along with my grandfather who was an electrician when we would casually just drop of a few 1/2 -3/4 HP motors for an overhaul and refurbishing. I had no idea about the work until I saw this video! Great job and skill!
I was a winder for 20 yrs in Youngstown Ohio. retired from that profession due to carpel tunnel.. I only used that kind of manual winding machine for small coils or very odd custom ones. we had a German cnc machine that made very precise coils that made it easier to install and also allowed you to wind as the machine was producing. stay fresh my friends!
Thanks for the tutorial on motor rewinding. I always wanted to see how it was done. I must say that I'm amazed by the way you applied your skills and abilities to get the job done. Absolutely amazing. Thanks guys
My dad did this and i was lucky enough to work with him for a short time. I struggled learning the connections, but all the winders would work with me. Spring was always job security with the storms. It never failed, an OT rush job would come through about 4:15.pm on Fridays. Nobody would be able to take it, so dad and i would. Always seemed to be a form coil job. Loved doing those, but hated the fiberglass tape at first 😂. A big part of me wishes i would've stayed with it. Heck if i had the tools, ovens, coil machine, dip tank, etc i would do it again. Thank you for sharing this.
Back in High School (early 70s), I was in a motor repair shop class .. people would donate small motors (fan/shaded pole, 1/4 or 1/2 single phase induction motors, etc), to repair/return or repair/keep. We were taught how to measure and count the wires, and make a “skein” winding former. We’d wind the coils by hand, counting the turns. Sometimes, it was only the starting winding and centrifugal switch needing replacement .. sometimes bearings too. We even converted a couple 25 Hz motors to 60 Hz by increasing the AWG, and reducing the turns (via formula). I’ve repaired some motors since .. it was a very memorable shop experience .. seems just like yesterday. Thx for sharing.
As a 15 year old apprentice in Sydney Australia I wound the coils for motors to convert 240 volt to 110 for the computers IBM and for hotels .This was in 1965. Is put a tap in each coil so that they could be adjusted for voltage fluctuations.This was before any switch gear became digitised.
I hear stories from my Paa that back in 1980s he used to rewind and repair 125, 150, 200, 500 hp motors with bare hands. It's amazing to see these giants.
Very few times when I have the opportunity of see a video so well explained an detailed. My sincere admiration and respect to this guy. If you compare to chinese or pakistani process, a world of difference. Greets from Venezuela. Keep up the good work.
I have worked as an industrial electrician for over 40 years and that motor winding has completely lost me 🤷♂️. Looks a very complicated setup I have no idea how you work it out great work
We do some early hi-pots on the windings, before the final wrapping, at lower voltages. That way the bad winding can be repaired. Saved several high cost motors for oil industry.
It really is nice to see your videos. I was a motor winder in high school for a couple of years and absolutely loved that work. We rewound motors from 5hp to 500 hp., 1800rpm to 3600rpm, irrigation pump motors to power generation fan motors. [edit] After looking your company up, I worked at Bakersfield Electric Motor Repair in Bakersfield CA. Now retired, working a BEMR was the most honest, satisfying, rewarding work.
Great video, I worked in the power industry for 40 years and have never seen an induction motor rewinding process carried out. Lengthy time consuming process meticulously carried out stage by stage. Our biggest motor was 11Kva🔌🔌
Excellent job, Thanks for making such a detailed video of the rewinding. A lot of work but needed when a not of the shelf available motor needs to be made ready for service. This is a special skill which is slowly disappearing in our current throw away society.
Good video that brings back memories of a good bunch of guys to work with years ago. You guys need to get into the habit of using the protective guides when inserting the wire into every slot, not just some. Don’t want that wire damaged 😂👍
My experience with electric motors was replacing ones that failed and smelled really bad and in later years scrapping them for the copper . Dirty jobs either way . I've always wondered how the motors were built or rebuilt . Great video , thanks for sharing .
Great video. I rewound every type of AC and some dc motors during my work years . Shop never had vacuum tank but we used same materials and methods. Thanks for this video- brings back lots memories.
This is really cool! I worked around some larger-ish motors on corrugate press machines years ago. I doubt any of them were more than 100hp though. And I know none of them were drawing more than 480AC. It's so interesting to see the craftsmanship and knowledge that goes into these these things that are very lives depend on every second of every day.
Im a retired industrial electrician from a large integrated steel mill. we have our own rewind shop. the threshold of wither to scrap or rewind goes up .Use to be 25 HP and now I think its 40 or 50HP AC. But depends also if its a special frame or other factors. Also all DC motors got rewound regardless of HP
When a job is done as you can see in the video,... there are no words that can be used to congratulate or highlight the level with which it was done... No words...👍👍👍👍👍👍👍
In my younger days I worked in a technical college where motor winding was taught. (These days for small motors its cheaper to buy a new one.) Not as big as this beauty but small basic motors. Who would have thought your video could be so interesting, just winding a motor. But I have been spoilt, videos of Indian guys rewinding motors on the roadside, yours is basically the same but not done on the dirt outside, yours is a much cleaner environment, same principle though. But I digress, a very interesting video my friends, fascinating really, great to watch professionals at work. Well done.
Very interesting vid. Thank you. It looks very labour intensive! I suppose repair is still cheaper than a new motor especially if a new motor is unavailable or obsolete.
I have no idea what's happening in this video. I'm ignorant as shit as to what's going on in this. However, I do enjoy watching nerds craft things with love & knowledge making something incredible. And this is awesome. I do play music, and when this thing levels out around 34:52 & that "wobble" sounds like it go straight into tune. so fucking satisfying. good job boys! I dont know what this motor runs but I bet this handles it with ease!
When you think about it, the Honda Fit Hybrid motor is rated at about 30hp but it delivers 118 lb/ft of torque, which is about the same this motor makes at 725 rpm. Only the hybrid motor weighs maybe 30lbs and this weighs the better part of 1000lbs. Progress is real
After the high-pot test, we would put the motor on its side, hook it up, put a steel ball (large ball bearing, maybe 1/2" dia), and bet a quarter all the guys in the shop what direction it will roll inside the iron-stack.
Very satisfying video. At 23:00, if you find a short, do you have to rewind the whole thing, or is some other fix possible? At 33:26, was the rotor installed just prior? Is any special alignment check needed after installation of the rotor? Thanks.
Very interesting video, especially in the first part, thank you very much. If you can trust the vacuum gauge, it is a rough vacuum. Is that enough to remove the bubbles? What is the vapor pressure (20°C) of the polyurethane paint?
it was blowing my mind you could do that so easily but i suppose you have already done it a few thousand times. Even so you need to be able to have some committment and believe you can do such a complex task to completion.
Greetings from The Netherlands. At the age of 13 (1966) my neighbor asked me if I was interested to do some work during the summer holidays. I had trouble at my previous school and was interested in electrotechnical stuff. He was rewinding electro motors. I started taking ball bearings of broken down electro motors. Legally I was not allowed to work at that age, but I did very well and learned a lot about these things. After that summer holidays I went to a technical school and learned other things. Next year I went back to the electro company and learned a lot more. The year after the 3rd summer vacation in that company it entered the electrotechnical classroom in that school and recognized all the types of electro motors. I started talking about it to my new electro teacher ;-) . He made a remark that it was special I recognized those different motors. I told him I could even explain to him how they worked and even how the windings were calculated and replaced. I saw him getting white around his nose... What am I going to do with you? You know more at this moment than I will ever teach your classmates in the next two years! I became a measurement- and control engineer.
You brought back lots of memories. Thanks
Hello, I'm living in France and I'm 23 years old. I'm an electrical engineering student and now I'm doing me thesis about electric machine. But I do struggle to understand practical model of them, there are much different types. I really respect for your experience
Nice story
I'm just amazed how ppl figured this out to begin with!
Right? The engineering mind is something else.
thank NIKOLA TESLA.
@@johnkana7866Exactly, was just about to write that John! Thx
Yeah not people, person. Out entire modern world is pretty much thanks to Nikola Tesla.
Exactly
I have no idea why I wanted to watch a video about some chads putting together an industrial electric motor, but I'm glad I did. This was so cool.
Thank you for watching!
Brings back memories of my days in the navy. interesting to see what has changed and what has not changed in 50 years. My ship was deployed as flagship for 6th fleet and we were all alone. No facilities for support and no tender, so the ship's electricians were always rewinding motors. As I recall the largest was a fire-pump motor, 400hp. Those guys were great.
Wow
Mitsubish elevator Malaysian and export
37@38
Akademi binaan malaysia
Old school Navy guys had to be the best maintenance men. Like you said they were all alone and had to make it work one way or another.
this is so beautiful. watching copper wire being wound around a massively intricate series of carefully engineered grooves makes me very happy .
My dad started as a motor winder, a good gig. You can tell a motor winder by the size of their forearms- like Popeye.
This is such an in depth and detailed process to wind one of these motors. No wonder the industrial ones get so expensive.
Thank you for sharing the rewind. As a kid I was always fascinated with motors and how to rewind them. There were some books I learned from and as a hobby would get these motors that were smoked and rewind them. From what I have learned by reading, was able to take the bare stators and calculate the turns and CM to fill the slots. To calculate the CM, I'd just fill the slot with a hank of say 17ga wire and had the volumn. I could wind 3 phase motors to single phase and had to start from scratch. I used 5 coils per pole in a four pole 36 slot stator. The coil pattern I copied from a Westinghouse motor, span slots 1and 7. The poles would overlap on the outside coil. I think this was to help reduce harmonics ? ? Well, That was many years ago and don't remember how to do that math anymore. Now I have a new, ! ! ! well getting older hobby that bacically doing nothing (retired) as very soon will hit 78 years. Your well done video brings back memories and I'm impressed with the task you have done. To me that is beautiful the way you done up the inside that motor. Too bad it has to be covered up but, yes the protection . I do appreciate the old open motors which you could see the formed coils. Take care ........... Gary
Gary that is one heck of a story and I would like to thank you for sharing and your kind words. We are very pleased you enjoyed the video and hope that we can keep providing content you find interesting. Feel free to subscribe to our channel so you get notified when we come out with a new video. We have a couple new videos that are in process of being edited and will be published soon.
Thanks again Gary!
That is so cool! They certainly seem to take pride in their work.
Winding motors is like knitting for men. 🤣
The work that goes into it is very impressive.
This video has helped me understand why when i tell my customer his replacement motor is going to cost $7300...
These are completely hand built and tested by experts using expensive materials...
Thanks guys for keeping our industrial world humming...!! ⚡️⚡️💪
@xephael3485 the $7300 was arbitrary, and not indicative of this particular motor. Yes I agree this motor would be much more expensive...
@@MrMaxyield you're probably correct about the cost. Seemed like 125hp vertical sells for $14k new online... This shop had a lot of people working on rewinding this motor if they're only charging lets say $7k .
I remember tagging along with my grandfather who was an electrician when we would casually just drop of a few 1/2 -3/4 HP motors for an overhaul and refurbishing. I had no idea about the work until I saw this video! Great job and skill!
I was a winder for 20 yrs in Youngstown Ohio. retired from that profession due to carpel tunnel.. I only used that kind of manual winding machine for small coils or very odd custom ones. we had a German cnc machine that made very precise coils that made it easier to install and also allowed you to wind as the machine was producing. stay fresh my friends!
Thanks for the tutorial on motor rewinding. I always wanted to see how it was done. I must say that I'm amazed by the way you applied your skills and abilities to get the job done. Absolutely amazing. Thanks guys
You all are like artists!
My dad did this and i was lucky enough to work with him for a short time. I struggled learning the connections, but all the winders would work with me. Spring was always job security with the storms. It never failed, an OT rush job would come through about 4:15.pm on Fridays. Nobody would be able to take it, so dad and i would. Always seemed to be a form coil job. Loved doing those, but hated the fiberglass tape at first 😂.
A big part of me wishes i would've stayed with it. Heck if i had the tools, ovens, coil machine, dip tank, etc i would do it again. Thank you for sharing this.
Back in High School (early 70s), I was in a motor repair shop class .. people would donate small motors (fan/shaded pole, 1/4 or 1/2 single phase induction motors, etc), to repair/return or repair/keep. We were taught how to measure and count the wires, and make a “skein” winding former. We’d wind the coils by hand, counting the turns. Sometimes, it was only the starting winding and centrifugal switch needing replacement .. sometimes bearings too. We even converted a couple 25 Hz motors to 60 Hz by increasing the AWG, and reducing the turns (via formula). I’ve repaired some motors since .. it was a very memorable shop experience .. seems just like yesterday. Thx for sharing.
As a 15 year old apprentice in Sydney Australia I wound the coils for motors to convert 240 volt to 110 for the computers IBM and for hotels .This was in 1965. Is put a tap in each coil so that they could be adjusted for voltage fluctuations.This was before any switch gear became digitised.
I hear stories from my Paa that back in 1980s he used to rewind and repair 125, 150, 200, 500 hp motors with bare hands. It's amazing to see these giants.
Excellently presented but do wish you had talked more as you obviously know so much! Best of luck!
As a machinist I thank you!
Thank you for watching!
I’m amazed that the thin layer of insulation on that copper wire is so effective!
I like the style of this tech video combined with what you guys are doing. Engaging for sure.
Very few times when I have the opportunity of see a video so well explained an detailed. My sincere admiration and respect to this guy. If you compare to chinese or pakistani process, a world of difference. Greets from Venezuela. Keep up the good work.
I have worked as an industrial electrician for over 40 years and that motor winding has completely lost me 🤷♂️. Looks a very complicated setup I have no idea how you work it out great work
Boy did this bring back memories. Haven't wound a motor in years. Can't decide if I actually miss it or not lol.
We do some early hi-pots on the windings, before the final wrapping, at lower voltages. That way the bad winding can be repaired. Saved several high cost motors for oil industry.
It really is nice to see your videos. I was a motor winder in high school for a couple of years and absolutely loved that work. We rewound motors from 5hp to 500 hp., 1800rpm to 3600rpm, irrigation pump motors to power generation fan motors. [edit] After looking your company up, I worked at Bakersfield Electric Motor Repair in Bakersfield CA. Now retired, working a BEMR was the most honest, satisfying, rewarding work.
I made motors like this. It's still as primitives as I thought it was back then. The one thing that I don't miss about it is the sticky shoes.
This is awesome. I love humanity's ingenuity
Great video, I worked in the power industry for 40 years and have never seen an induction motor rewinding process carried out. Lengthy time consuming process meticulously carried out stage by stage. Our biggest motor was 11Kva🔌🔌
Excellent job, Thanks for making such a detailed video of the rewinding. A lot of work but needed when a not of the shelf available motor needs to be made ready for service. This is a special skill which is slowly disappearing in our current throw away society.
Thank you for watching!
When I started out with Santa Fe Railroad as an electrician apprentice we spent time in the remind shop. Nice video.
Thanks for watching!
Good video that brings back memories of a good bunch of guys to work with years ago.
You guys need to get into the habit of using the protective guides when inserting the wire into every slot, not just some. Don’t want that wire damaged 😂👍
My experience with electric motors was replacing ones that failed and smelled really bad and in later years scrapping them for the copper . Dirty jobs either way . I've always wondered how the motors were built or rebuilt . Great video , thanks for sharing .
Just Fascinating. Always wondered how rewinds were performed. You provided an excellent educational video. Thanks for taking the to to share.
Thank you for watching
" Beautiful Poetry ".
You did it perfectly and I admire it ❤ a rewinder technician from Pakistan
Thank you
Great video. I rewound every type of AC and some dc motors during my work years . Shop never had vacuum tank but we used same materials and methods. Thanks for this video- brings back lots memories.
This is really cool! I worked around some larger-ish motors on corrugate press machines years ago. I doubt any of them were more than 100hp though. And I know none of them were drawing more than 480AC. It's so interesting to see the craftsmanship and knowledge that goes into these these things that are very lives depend on every second of every day.
,,,I love the job,,best in Kenya
What a great professional job. Thanks for the video. ⭐️
Thanks for watching!
This is a disappearing trade, the places I knew that rewound motors are long gone. Thanks for sharing. Cheers
Im a retired industrial electrician from a large integrated steel mill. we have our own rewind shop. the threshold of wither to scrap or rewind goes up .Use to be 25 HP and now I think its 40 or 50HP AC. But depends also if its a special frame or other factors. Also all DC motors got rewound regardless of HP
All I remember from my 1960s electric shop class about motors is wave and lap windings. And have they retired FISH PAPER for the stator slots?
Work of art Sir. The "spindicator" was the coolest thing. Thank you for sharing . God Bless.
Thank you
When a job is done as you can see in the video,... there are no words that can be used to congratulate or highlight the level with which it was done... No words...👍👍👍👍👍👍👍
In my younger days I worked in a technical college where motor winding was taught. (These days for small motors its cheaper to buy a new one.) Not as big as this beauty but small basic motors. Who would have thought your video could be so interesting, just winding a motor. But I have been spoilt, videos of Indian guys rewinding motors on the roadside, yours is basically the same but not done on the dirt outside, yours is a much cleaner environment, same principle though. But I digress, a very interesting video my friends, fascinating really, great to watch professionals at work. Well done.
Thank you very much!
I just learned a bunch of things; I thank you for it!
Absolutely amazing ! Thanks for creating this content 😊
Thank you for watching
Am also a motor rewinder and I would like to learn more experience from you guys... any recruitment please am interested
Very interesting vid. Thank you.
It looks very labour intensive! I suppose repair is still cheaper than a new motor especially if a new motor is unavailable or obsolete.
I find it crazy that the first time you check for shorts is when it's practically finished.
my fingures hurt just watching you guys
Stellar video. Thank you for the great narrative too.
Can you tell me what this type of motor gets used for?
Nice work! You guys are artists.
Thank you!!
Estupendo trabajo...felicitaciones
Gracias!
Impressive ❤
Much love from 🇰🇪
You know what youtube? You're right, I do want to watch someone wind a motor for 35 minutes
Thanks for watching!
Fascinating. Thank you for the video.
Thanks for watching!
I have no idea what's happening in this video. I'm ignorant as shit as to what's going on in this. However, I do enjoy watching nerds craft things with love & knowledge making something incredible. And this is awesome. I do play music, and when this thing levels out around 34:52 & that "wobble" sounds like it go straight into tune. so fucking satisfying. good job boys! I dont know what this motor runs but I bet this handles it with ease!
Thanks for watching!
Very good professional job
Good video thanks 🤔 😊 👍 ❤❤❤🎉🎉🇵🇰
Thank you!
Incredible work.
I was expecting a more precise machining process, but it seems most of it is done by hand. Cool video 👍
Thank you!
Excelente trabajo amigo gracias por compartir su valioso conocimientos
Gracias!
That's a piece of art!!!
Thank you!
What a nice and neat job.
Thank you!
She's a smooth running motor, sweet.
Serious startup twang
Awesome, great detailed video thanks for sharing.
Glad you liked it!
Great Job thanks for sharing. What voltage did you apply for the spin test? Ac or Dc?
Great work, thanks for sharing! You guys should invite college students studying electromagnetics in to see how motors really work.
Thank you for watching!
Amazing video - thanks for sharing!
Thanks for watching
Winding and Assembly of 125 HP Electric Motor, I look amazed, Pekalongan, Central Java, Indonesia See.....Success for..."Herold ......."
Wow you guys are so smart. I would have given up and became a stylist.
Thanks for watching
Very nice motor video. Some people just try to paint the bad spot and bake a low megohmmeter reading motor. Good luck on that. 😎 Thank you.
Amazing
Thank you!
I like this video .
👍thanks
I am from Srilanka 🇱🇰
Thanks for watching
Nice job and good teamwork. Thanks for sharing.
Thanks for watching!
When you think about it, the Honda Fit Hybrid motor is rated at about 30hp but it delivers 118 lb/ft of torque, which is about the same this motor makes at 725 rpm. Only the hybrid motor weighs maybe 30lbs and this weighs the better part of 1000lbs. Progress is real
Nice Job Guys... Cheers from NJ
Congratulation very good
Did you pick nylon so that the lashing would melt when the motor got hot?
This is so impressive. These giant motors are so complex and require lots of skills to wind. Good job!! And what is this massive motor used for??
Excelente trabajo Felicidades!!!
I think I can figure out my dremel rebuild now, thanks guys
Very informative video, please post more videos like this
Thank you! More to come
If i am not mistaken, that is the winding for the motor that runs Chuck Norris' back massager.
After the high-pot test, we would put the motor on its side, hook it up, put a steel ball (large ball bearing, maybe 1/2" dia), and bet a quarter all the guys in the shop what direction it will roll inside the iron-stack.
Bạn đã hoàn tất động cơ vào bộ dây vành dế rất đep .ban luôn hạnh phúc.
Interesting thank you for sharing
Thanks for watching!
Sir adding winding diagram and connection diagram to the video will be awesome
Good information ℹ️ video
Thank you
Bạn là người thợ giỏi kỹ thuật cao thao tác chính xác
Very satisfying video. At 23:00, if you find a short, do you have to rewind the whole thing, or is some other fix possible? At 33:26, was the rotor installed just prior? Is any special alignment check needed after installation of the rotor? Thanks.
Very interesting video, especially in the first part, thank you very much.
If you can trust the vacuum gauge, it is a rough vacuum. Is that enough to remove the bubbles?
What is the vapor pressure (20°C) of the polyurethane paint?
it was blowing my mind you could do that so easily but i suppose you have already done it a few thousand times. Even so you need to be able to have some committment and believe you can do such a complex task to completion.
I enjoyed your video and learned a lot. What happens if the coils are not tied down and varnished?
I'm a motor winder nice job those joints were super short nice bit of brazing😂
Gotta give it to ya. That's a hell of a hand job
Nice