Electric Motor Rebuild

Fixing up a junk yard motor.

[@atpedro1345]

Thanx Blunosr. Appreciate the reply. Im building a lathe and am searching around for a motor. Hawaii is not a place where motors appear magically. Well maybe its because I'm new at this. It was just awesome watching your labor come to life! Thanx again.

[@virginiastage9678]

Excellent, Thank you for sharing this. My old Packard motor on an old compressor began to seize up last night so I started watching these to know what I need to do next. Much appreciated.

[@johnvandyk2592]

Thanks for the demonstration. I'm rebuilding my spa pump and had to pull the centrifugal switch to get the rotor out. Thanks to your video, I remembered how it all goes back together. I'm not looking to teach a college course; I just want to get back into hot water. Regards from another Blunoser over in the Rockies...

[@blaqshiep4920]

Idk how i ended up here. I barely understood anything you said, but i watched the whole video and loved it. Definitely want to learn more. Humbling to all of sudden know nothing

[@simonbaker9909]

Really like the video, I like to see old stuff brought back to life. Good explanations and suggestions. Seems those bearing pullers are pretty important tools for that kind of work.

[@jimsjacob]

Excellent! Exactly what I was looking for. My Baldor single phase 3hp motor suddenly quit on me. Your comment of, "it's almost always bearings" was very encouraging. I hope to find that to be the issue. I replaced both the Run and Start capacitors to no effect, so I'm really hoping it's not the windings. Again, excellent presentation! Thank you

[@Justicejamesb]

Cash is really tight. I've been out of work for along time and plus I like rebuilding things, a lot like what you do.

[@sangbonsynat4226]

Thank you for taking your time to record and share your expertise. I love it and learned a lot from you. Keep sharing what you like to do. Thank you!!!

[@raymondchurch1960]

Excellent therapy! Especially as you get older and tend to find yourself just sitting around pondering random thoughts, lol.

[@charleswilson4598]

You stated that you don't like Chinese bearings but prefer American or Japanese bearings. My Dad grew up during the great depression and didn't like anything that wasn't American made. I guess Canadian was OK too. I remember when he was replacing the front brakes on his 1992 Ford F150. He pulled the front wheel bearings to grease them. He found that they were Japanese bearings. He wasn't going to put those Japanese bearings back in his truck so he went to the parts store and got some Timken, made in USA bearings to put back in his truck. I found out later that Timkens were being built in several foreign countries. he just got lucky. Later on when he quit driving I bought the truck. A couple of years ago I replaced the front rotors and pads and decided to replace front bearings. I did find Timkens made in the USA online but it took some searching to find them. I had to smile when I pulled the old bearings out and they were stamped USA.

[@jasonuttleyaces8]

thanks SO MUCH!!! I'm in need of this knowledge & so thankful to see & now know this. I got a large motor used & want to use it as I have many uses for it; building a vice, drill press & jigs to sharpen my drill bits as they turn & burn instead of cut & work. Have 20+ ideas to new products & a limited cash resource; thanks again!!!

[@tobin989]

I found this video because I have an old Marathon Electric motor that seized up and I'm looking to rebuild if possible as opposed to purchasing a replacement. I really liked your video. Thank you for sharing this and best of luck in the future. PS those special pliers are called snap-ring pliers

[@billybonewhacker]

great video, it's very relaxing to rebuild, or just fix electronic things . even if for the moment you have no use for them. I totally understand. I've got numerous old radios around here that I'll probably just give away lol.

[@timhoran7676]

Great informative video. I'll be sure to check out the junkyard for some gems.

[@NMranchhand]

First: Great vid. I am anxious to give it a try and your video gave me some confidence. Second: Even Shakespeare asked, "What's in a name?" I can name those parts but I've never done it. You are getting it done by just doing it (the American/Canadian way after all). I admire your talent, and thanks for sharing it. I'm off to the junkyard.

[@neatpleats11]

I took my motor apart and couldn't figure out where the wavy washer went. Thanks for clearing that up for me.

[@anaya51]

Very clear and informative. Thank you for the upload. Do you have more videos of you restoring old motors? If not, I'm sure I'm not the only one that would love to watch them!

[@elchuco00]

Great video! Not going to read the comments, but I can only imagine all the flack you're going to get for the lack of actual names of things. Specially the bearing "oil" lol. Pay no attention to the haters! I just learned a few things from you, great job!!!

[@rodneyholthaus4622]

Perfect just what I was searching for replacing bearing in a explosion proof motor, I wasn't sure what that collar was next to the bearing. To help other people take a look at the manufacture website of the motor that is how I found the bearing size.

[@maheshkumarmatadeen2515]

a very informative video indeed. Thanks for the endeavour to make the knowledge public.

[@blunosr]

I think it must be the impeller. There are seals and bushings. I would personally try to fix it myself, but I like a challenge. Good luck with it,

[@gooberrulz]

Very helpful , well done video. I wasn't familiar w/ the Loctite 609 product. I could use some now, matter of fact. Thanks for posting.

[@girliedog]

Excellent instruction, we need to save these resources instead of putting them in the landfill.

[@tracyosborne954]

Thanks for posting - very helpful and well paced.

[@stanleyhahn9486]

thanks for the great video. A+++ you make it so easy. I will attempt to rebuild /repair 1.5 HP motor that I suspect is bad bearing.

[@SteveP-vm1uc]

The thing you called a "HORSE SHOE or C CLIP" is called a SNAP RING and the specific pliers you used to remove and replace it is known as a SNAP RING PLIERS.

[@zerkfn8501]

THE RETRACTING AND CLICKING THING IS REFEREED TO AS ACentrifugal Clutch

[@PepsiManKolt]

I definitely learned a lot through watching your video. I recently purchased a large capacity compressor with a 5hp 220v GE MO-3022-1 motor attached. The motor wasn't working and started researching, which is how I came upon your video. After opening the housing I found that the bearings were in excellent condition but the centrifugal switch had overheated and came apart. Would you (or any responder) know where I could find such a part?

[@CheekyMonkey1776]

Thanks for the video! I wish I would have found this BEFORE I tore my motor apart. Hahaha

[@buildingsupplyco]

Nice find. Great job.

[@Wilted_Brainz]

I have a use for it. Cement mixer. Nice vid.

[@Drafty01]

Hi. The "switch - flippy thing" at 9:30 is the centrifugal starter switch. Also, Swedish bearings by SKF are pretty good, probably quite pricey though.

[@YoeyYutch]

Very helpful. Thanks. I think I'll find an old beater motor to practice on before I try to mess with spindle motor on our mill at work. I think it needs some love. I can see all kinds of greasy mess through the vents. I can't imagine it is supposed to be like that. Grease should only be right at the bearings right?

[@stephensilvea8654]

Flippy switch,is a centrifugal switch,it spins making contact with rotor until it reaches 75 percent of the motor speed and it will cut out,at that point it will operate by induction.

[@jidissafi7413]

Thanks for the video! Wish your motor wasn't so clean though. I've got an antique Robbins & Myers I looked into here and it's filthy. The inside's got a black mixture of dust and dried grease caked on everything and I've been reading up on degreasing them. Also wondering what you guys do when the bearing types aren't conveniently listed on the name plate. I'll look for numbers if I get that far.

[@billk6494]

Just Like Replicating The Bearings on a Rotary Tattoo Machine, Just Yours is obviously Larger Scale. SWISS MAXON, JAPANESE MABUCHI, Brushless Rotary motors. You could make a buffering Wheel out of your 1 HP Electric Motor.

[@montero0987]

flippy switch = centrifugal switch

[@jimshirley7613]

Kicks the start capacitor out of the circuit when the motor starts spinning.

[@dancopeland1968]

The ring is called a snap ring. Atleast that's what its call it on the box my pliers came in lol. Also I call the wrench a Cresent wrench. great video I'm gonna try to rebuild a B&G motor today.

[@johnnylerro8357]

Its not a snap-ring. It's a wave-spring.

[@shawnjohnson2714]

It's called a Circlip.

[@123Nolimits]

Excellent ! How much will you sell it for ? I could swap it out on my band saw.

[@agprince82]

lol "horseshoe clip" "woodruff key" "flippy switch"

[@blunosr]

Sorry, I'm just a putterer, not a business. I do like the idea of a DC lawn mower though. I'd like to see that!

[@allenjester3228]

Decent video. Doesn't go into electrical repairs other than wiring the motor.

[@victorbingo3205]

A woodruff key is half Moon shaped. That key is just common key stock. Horseshoe thingy is. Snap ring. Yer welcome

[@MrGeanfilms]

The WEG brand motors are excellent!

[@marvintomol3565]

VERY NICE VIDEO!!!!!

[@JoeCnNd]

soothing voice.

[@enigma7070]

Bravo! That's a great skill to have.

[@monsterjesse]

hey, this is a great video do u have any more repair videos of diff. types of motors/generators? . thanks

[@michaelfrancis3261]

Very nice video, my question is I have a 30 gallon compressor that not cutting off as it should. It should cut out around 180psi but before it gets to that point there’s smoke coming from it. Is that be of load? It just started doing this (is it on its way out or something?. What can I check to ensure that it wouldn’t die on me? Thanks

[@markmurphy7022]

Interesting video but on a safety note, you could have received a nasty shock had there been a wiring issue on your motor when you turned it on. You should never turn on a large motor when it is unsecured and you should never rest your hand on the metal casing when switching it in or while it is running

[@Justicejamesb]

So it this how pretty much any electric motor works? The reason I'm asking is that I need to replace/rebuild a radiator fan motor on my car, and if I just need to replace the bearings that would be amazing (cash is really tight right now)… Great video, thanks for sharing.

[@KamiCrit]

Pro tip, instead of hammering on a bearing. Warm it up in a toaster oven and slide it on.

[@Guardian4080]

Great video.

[@geo_YT88]

You should offer an electric motor repair service.

[@skyscraper37]

Where are you collecting these motors...you got a hell of a deal

[@albion2742]

How do you fix a motor that go water in it, the bearings turn and spin fine. I think something shorted out.

[@mitropoulosilias]

i use small skf bearings for small modell airplane brushless motors and i am happy with them! i suggest! greetings!

[@Brandon_Balentine]

Nice video! Do electric motors like this one have brushes? My table saw motor keeps tripping the thermal reset switch even without any load.

[@MRfixitall95]

I have two small electric seat motors from my truck that if I take them apart and put them bs k together they spin for a second then slow down and stop there aren't Any bearings and I have no idea how to fix them any ideas? And are you not supposed to pack the bearing on an electric motor?

[@marcus1845]

Our well pump motor went bad, and we took it to get it fixed. (It seemed to just have seized up) The guy we took it too said it would be cheaper to buy a new motor and pump than to fix the old motor and pump. I am just curious how this could be possible, unless he is charging a lot for labor

[@Kongen342]

Great and informative video! One question, what would you recommend if there are rust on the magnets?

[@blunosr]

Thanks, but it's not really for sale. I'm just a pack rat, and I do eventually use my motors. The other guy lives near me and I did fix him up with a motor, but they're really not worth shipping. You could easily do one yourself. They're quite easy to rebuild.

[@samehdarawshi3537]

thank you sir. learned alot. but i havenot noticed you used a capacitor. how did you manage to have 1 phase motor running without it? or have i missed the capacitor part?

[@kdyche2]

Blunsor, how did you know that it was the bearing that needed to be replaced before you opened it up? Could it have been the brushes, or did this motor not have brushes?

[@alto771]

Do you sell them? The 1/2 horse went out on my belt sander. I would not mind replacing with a full horse.

[@modoc852]

this motor still had a mechanical noise after replacing bearings.the drive end bell bearing housing should have been turned and sleeved to a snug fit of the bearing.center punching or loctiting bearing surface won't last.....fyi the part that turns inside of motor is called a rotor unless it has windings and commutator or slip rings on it than it is called an armature,and the part on the opposite end is called a centrifugal switch, that rides against a set of contacts, the c/s opens at 75% of full load speed taking the start winding and capacitor or capacitors( if any) out of the circuit.testing the motor for shorts,grounds or opens in winding should be performed before any mechanical work is to be done.

[@ozzieksk]

I have electric motors for my electro freeze ice cream machine. They are working but making some buzzing sound they they work. (Both)is it normal? I havent used then machine 3 months.

[@The2012Vacation]

Nice video. I heard you mention in the beginning that the barons are usually what goes out. I'm trying to figure out what on my motor tells me what size barons I need. I see stuff like. SFA,FR,PH and several more which one is it. Thanks

[@blunosr]

Hi Jamey, on high end motors, the label tells you the numbers (like 6203) for the bearings. On others, you won't know until you get it apart. I would suggest that most motors will use 6203 bearings. Big motors will sometimes use 6205.

[@The2012Vacation]

ok, Thanks. I have a Dayton 1/4hrs motor attached to a bubble sander. It got to the point when I cut it on I would have to spin the pulley to get it going, now it just hummes. I can spin the shaft with my hand so does that rule out bearings being an issue ? What could it be? I would like to order parts and try and fix it. Thanks

[@blunosr]

***** I would guess that it's a bad capacitor, or a loose wire on a capacitor.

[@The2012Vacation]

Ok. Good deal. I went to my dads and he has a old coal heater in the basement that has several motors. I'm going to try one of them. Thanks

[@GTImotion]

Very informative video.

[@robviolin1]

Good job. Thanks

[@karthikeyan6333]

I am designing an electric motor. I am facing a lot of difficulty. This video teaches a lot. Thanks. My question is: How the external fan cools the motor? Because the end plates completely seals the internal parts.

[@RCshowmen]

The heat from inside the motor is carried by conduction to the metal case of the motor and that in turn is being cooled by the fan's convection as it pulls cool air across it.

[@karthikeyan6333]

RCshowmen Thanks a lot buddy

[@MrUbiquitousTech]

Good info, thanks for sharing!

[@atpedro1345]

Nice work. How much will you sell that for? I noticed that 123Nolimits asked this same question 5 months ago.

[@swiftie80]

Hello, great video. Does anyone know anyone that rebuilds similar motors in the Houston area? it's difficult to find a good shop

[@blunosr]

That kind of pressure is very dangerous! Your motor just can't put out the kind of work required to go to that pressure. You need a pressure regulator, and over-pressure switch. Those things can blow, and kill you.

[@DeepWhitePorn]

If you’re still around I have some questions about an electric motor I’m rebuilding for my widowed mother-in-law’s table saw.

[@robviolin1]

Thanks for sharing

[@blunosr]

Hi, yes, this is how most electric motors are. Very small motors might be tough to get the bearings for, but Bearing supply places should have them. Why don't you just go to a junk yard (auto wrecker) and get a replacement? That would be my suggestion.

[@richardtullius6419]

Woodruff keys are half round, that sir is just plain key stock.

[@johnsvetcharnik843]

At 9:40 where you say you don't know what the spring loaded mechanism is, i believe it is a governor hence the flyweights on it.

[@johnnylerro8357]

I agree. Its a governor of some type. It definitely makes a pressure contact to the line side end-bell. This appears to be a brushless motor and the "switchy thing" a commutator.

[@RCshowmen]

It is a centrifugal switch on single phase motors it tells the initiator coil when to shut off.

[@Railroadertwo]

I have a Doerr 2 hp 115/230V Model 58 3450 rpm Motor Reference: 6033187DJ763 Craftsman Air Compressor Motor that I believe needs some new bearings, where Can I get These? Thanks

[@timnicolas1987]

that starter is a stationary switch

[@robviolin1]

Do you have any DC motors for sale. I want to convert my riding lawn mower to all electric, then my car to all electric.

[@sanjayabandara8833]

Thanks

[@73superglide62]

sir pick up big fan that has bent shaft a litle make pretty good vibation how wood u straight it up

[@curtisauger8789]

little part is called a snap ring

[@camerong9175]

i have a 7hp electric motor for a electric start lawnmower it is not working lol can i jkust have you fix it lol

[@davidpaul4484]

can you show us how to repair a dj turntable motor

[@The2012Vacation]

Ok. Thanks some at work told me that it could be the starter winding. I'm not sure what thAt is

[@RCshowmen]

A single phase motor has 2 windings of copper coils one to start it in the right direction the other to maintain it once the armature is up to speed. the switch he keeps referring to as "flippy" is a centrifugal switch that turns the starter off.

[@johnkosheluk1041]

That was cool but what i dont know is y someone would through away a motor that cost 700.00 new if all it neaded way bearings

[@johnnylerro8357]

As the author stated, the tag was worn out. I guarantee that someone scrapped the motor because they could not identify it. Some people have the misconception that small electric motors are not worth rebuilding. In my opinion this is false. Either they did not feel up to rebuilding this motor, or they felt that the motor wasn't worth rebuilding. The bearing numbers were not listed, requiring a trip to the bearing house for bearing guys to i.d. the said bearings. It just isn't worth the hassle for many people. We have to also consider that the author said that a newer model had superseded it which he then wrote on the housing. The box was also missing, leaving a tell-tale sign that the box was carried over and mounted to another motor.

[@mikeguitar9769]

The fan also broke

[@musliminsinsuat5991]

I can't ask f how to research for diagram for motor winding.

[@chargerzrsik]

its called a cir-clip

[@poozandweeez]

wasnt a woodruff key, just saying

[@jimshirley7613]

So... what is it called?

[@poozandweeez]

a wood-ruff key is a semicircular key, that key is just made from standard key-steel stock from the looks of it, i cut a lot of key ways using woodruff cutters which look like slitting saws in the mill, no offense intended

[@jimshirley7613]

Thanks...

[@anhvu-en8cv]

khong hieu tieng

[@szemo420]

the horse shoe thing....SNAP RING ......the pliers are SNAP RING pliers for gods sake, this whole vid gave me brain cancer

[@szemo420]

"wavey washer" ....RETAINING SNAP RING.....FUUUUUUUCK

[@marilynmorgan5200]

I'll buy the wavy washer-but the flippy thing and the key makes my head hurt. If you know what you are doing-you can put a bearing on like he said, but where the endbell was bad, he should have peenied the heck out of it before checking the bearing for fit, then used the retainer. Anyone else notice the UL listing and the fact he said it was explosion proof? If he sells it to someone else, depending on where it is being used, if it should fail and go boom, his butt will be sued because he is a back yard mechanic, not a UL listed shop. PS-I own an electric motor repair shop.

[@TTLLOGIC]

This is probably one of the most ignorant things I've watched....smh

[@FastenDeezNutz]

My 6v starter motor off the 1951 John Deere B may be fried due the 12v Battery I put in. (Didn't know it was 6v) Can I Salvage it? I want to rebuild it myself.