K&T Electric Motor Rotor Shaft Inspection

[@semw2019]

I started working in a motor shop for my father in law after high school. Began stripping motors and cleaning parts, then started machining endbells. I worked there for fourteen years and I must say that that was the best line of work for a young man. I began watching your videos a couple of years ago, and some of your techniques are the same ones that I learned from a older machinist.. I rarely use a three jaw chuck, and it is cool to see someone else chucking and indicated a endbell. Keep up the great work man!

[@lazaglider]

I can't say what it is, but there is just something a little extra special about your home shop projects. Really looking forward to the next stage. Ongoing thanks.

[@StreuB1]

Its always amazing watching a person do what they do for a living, on their own projects. If any one of us viewers would have realized that shaft was bent, it would mess our heads up so bad we wouldn't know which way was up. We'd go off and have 5 beers and look on Ebay for a used motor and cry when we can find one or see what they cost. You do this every day for your job so to you it was "Well ok, damn, another hour of work now and press that shaft out, make a new one." There was no second thoughts, no guessing, you didn't even break a sweat or worry one bit. You just went to work doing what you always do, and thats inspirational. I NEVER knew you could do what I just saw. I think we all learned a thing or two in the last 5min of this video today. Thank you Adam, as always. :-)

[@Abom79]

Thanks Brian! Real cool words right there! 👍🏻

[@maird1]

Fun to watch. Did this for a living back in the 70's age 16-19. Worked in a motor shop ended up in the machine shop. Enjoyed the work hated the pay. Left for better money in a different industry. Now retired have my own private for fun machine shop. it just stayed in my blood. Making stuff for fun these days. The memories came flooding back watching this. I would have first tried to straighten the shaft with a torch dial indicator and a wet rag. Cut my machinist teeth making motor shafts, repairing castings, pumps compressors etc... Thanks for the video.

[@bulldozer7656]

Wow Adam, *SERIOUS* weight loss bud. We all can tell, great job! Awesome machining as usual. Thanks for all your hard work!

[@willkern6]

With a press workout like that, I can see how you have been losing all that weight :D Keep up the good work.

[@Dropbear237]

I used to work for my dad's friend years ago, he was a jack of all trades, machinist, boilermaker, engineer, diesel fitter, painter, sand blaster and some other stuff too. I helped him build a press that had three 225 tonne hydraulic rams on it and bottom rail had to be moved by forklift to adjust the height and four 3 inch diameter pins to secure it. He was using it to straighten a part off a cane harvester and it slipped out and landded about 40 meters away from the shop in the neighbors cow paddock. He built a cage for it after that and nobody was allowed in the shop when he was using it.

[@MrMrMeile]

I Never have thought that is possible to press an shaft out of an rotor, first time seeing it on youtube. Very educational thanks.

[@tenaxxband]

watching you do this motor has given me a glimpse into what my grampa used to do every day. he was an electrician/HVAC tech and served in India during the war as an electrician. he rebuilt well pump motors regularly. I inherited his lathe and press after he passed. now i know why he had the 30 ton press!

[@tek4]

Adam, damn man, first 15 seconds and I have to say your looking awesome. I can't believe the change I see in you. And I'm so proud brother. Keep up the good work

[@Ice_Industrial_Auto]

Prior to watching this episode, i have never in my life seen or heard of anyone pressing out a rotor shaft for a repair, except me.. I've done it twice, successfully on two of my motors. The first one i did, i made the new shaft less than half a thou slightly bigger, and it gave me hell pressing back on. Thanks for sharing this Adam.

[@dartrunner4599]

Freeze the shaft and heat the lamination. Makes a huge difference.

[@johnapel2856]

I always jump from "press-bang"! Every time. I never knew the shafts were pressed in. Learning more every video. Thanks.

[@paulkoomen5262]

I always enjoyed enjoyed pressing out the Seaking folding Rotor head sleeve bushing, as they would take a lot of pressure and like you say, go off like a shotgun, and watching everyone in the shop jump, if they didn't know you where at the press. One thing I didn't know that those shaft where replaceable. Man the things You can learn, just watching your video's is priceless, Thanks Adam for the education. And the great Video's.

[@Scart69]

Pro tip..... don't watch videos with your 5.1 surround headphones on of motor rotor shafts being pushed out using a hydraulic press....... nearly shat myself when it popped the first time..... 0_o Awesome video tho, as always.

[@SkylersRants]

That first big crack scared the bejeezus out of me. I'm really impressed. I'd have just bought a new motor a long time ago.

[@johnemery3933]

Hi Adam Love your video's I have done many repairs to rotor sharfts over the years, when I encounted a bent sharft I took a drffereht approach I would cut off the bent end behind the bearing I would then drill and ream a hole into remaining sharft in the rotor and do a weld prep. I would then turn up a new piece (oversize ) to replace the cut off piece press it into the rotor and weld in place.. Then would completely turn the whole end, because the weld is behind the bearing the loading on the motor is OK. I am 68 year old semi retired machinist still working . Keep the video's coming

[@Abom79]

I have done that before in the past on some jobs, but only when we needed to or the customer requested it. I prefer to make a new shaft when I can. I've shown stubbing shafts in other videos on my channel.

[@arnomaas6452]

Adam , congratulations for handling that very hard workout so well ! The heavy loss of weight of yours isn't just visual but also functional too !

[@TyphoonVstrom]

Would've been easier for him when he was bigger- all the extra mass really helps in situations like this. I say this from experience!

[@arnomaas6452]

would your heart hold up with so much cranking and so much oil pressure , I highly doubt you have had that particular experience before !

[@jerrysilcox6937]

Adam, I really enjoy your channel. I'm a retired USAF aircraft mechanic and I find the work that you do quite interesting. I hope you stay safe during the hurricane and that your shop doesn't get any damage.

[@rjvandermark7642]

Great Slomo Action...! Truly shows how violent the reaction of pressing energy being released. Great Video. You never disappoint.

[@bradhayworth2926]

Bummer on the bent shaft. I was hoping for a straightening job a la Keith Fenner... But I guess that shaft is a little short for straightening. Looking good on the weight loss, by the way. I just dropped 40 myself. Keep it up! I really enjoy the videos, keep them coming. Thanks for taking the time to make them.

[@rodneywroten2994]

when i was a kid i worked for a elect motor rebuild place for offshore. and when the hooked up that hyd. press the whole shop would shake. it was powerful. great video Adam

[@SilverWrinkly]

Another great video Adam. I'm also looking forward to part 2. When the shaft came 'unstuck' from the rotor, it reminded me when as a very green 17 year old, me and a mate used a hydraulic puller to remove the front hub on his car. Neither of us had seen a hydraulic puller before, we attached it to the hub, and very cautiously wound up the very small knob in the centre and of course, felt no resistance. We gave it a couple more turns, then some more, then sat back and wondered if we had a duff puller. Then BANG. The puller and hub passed between us (luckily), skidded across the road, and knocked a chunk out of the kerb on the opposite side. It travelled about 40 feet in total, very quickly. That was 52 years ago and I'm still sweating.

[@benhammer7782]

Six years later, glad I found this video. I have a 3/4 hp motor that needs a new shaft. Now I know what needs to be done. Thanks.

[@tek4]

I'm a electrician who likes to play with machines, but I've never seen this happen on any size motor. Thank you again Adam. Fantastic job from a fan in Rhode Island.

[@StangspringDK]

Wow! Didn’tthink it would budge, but there’s still a lot of Abom torque left in the tank, despite your weightloss (looking good). Looking forward to next episode on this.

[@JRD77VET]

Good to see the press took care of it. The slow motion is a real eye opener on how violent the released energy is when it broke free. That is why safety glasses and ear protection are a must. Jeff

[@fasteddie4107]

Good stuff. It was really cool hearing the low frequency harmonics reverberate through the machine when the shots go off in slow motion. Thanks for sharing this.

[@Marcywm42]

That was exciting. The new shaft will restore the motor to almost as good as new. As always, thanks Adam.

[@chichcnc]

Quick tip.... For a 6207 bearing, multiply the last 2 numbers by 5mm gives you the bore diameter 35mm Another great vid Adam. Wow the weight is falling off you man. Keep up the good work.

[@agdtec]

Florida has been hit hard. Hope you and your family are safe.

[@normjacques6853]

Watching this storm on TV, and praying for your safety. Don't hesitate to reach out if you need anything. Will happily do whatever I can....just keep yourself, and Abby, safe. We're very worried about y'all.

[@jamesmorris3175]

I had an old motor rewound and refurbished recently and really hadn’t given thought to the work that went in to checking and redoing the bearings, shaft and endbells so this series is super interesting for me personally, so cheers for that. Keep her going on the healthy lifestyle too dude- really starting to notice the difference even just in the definition of your forearms and hands. Great work!

[@throttlebottle5906]

most likely something along the lines of "cross knurled the shaft" if diameter was too small for bearing and assembled with some loctite product, possibly the same for end bells.. assuming it was a bearing motor and not far off spec.

[@Huskiedrive361]

Always fun to watch a newbie react when something is being pushed in a press. They usually crap themselves when things go BANG!

[@johntatro37]

Hoping you and your family fair well through the hurricane. God bless you.

[@red12dirt]

Adam and Abby and all your family hope you are safe and praying for y'all!!

[@WhiteJawz1]

Hello adam, fellow machinest here i repair rotors and end bells all day long, our work practices are pretty much the same. For a reshaft tho ill cut the end of the drive end off then drill out the shaft to release the fit on the rotor. Then it makes pressing out very easy! For this rotor i would had straighted the shaft using the torches then sleeved both ends if possible. I only spray weld if i need to because ive seen it fail if the motor has a belt load.

[@Platyfurmany]

Adam, I know this is out of left field, but pressing that shaft out of the motor is an excellent example of how earthquake fault lines build up pressure and then suddenly release. The pressure builds up and up until there is enough to break the friction holding it in place. With your permission, I'd like to use this video as an example and illustration.

[@stuarthardy4626]

Done plenty of shaft replacements on induction motors but these were high speed jobs that ran on 400hz two pole for grinders , I did total rebuilds on these although I did not make the shafts they were bought in as a Service replacement and were glass hard , I did the rewinds as well not an easy jobs give me 1000hp any day Great work Adam noticed the rotor had a key way but the shaft did not any thoughts but I bet you have it done by now 😀

[@Newfive]

gotta love that pressure release.... sometimes I like customers to sit there and watch... especially the ones who are grumpy...

[@therealstubot]

Love the press bang. I know it's coming, I feel it, it feels me too. Instant relief.

[@imagineaworld]

Those shots of the shaft going was the coolest thing ive ever seen in a shop on the internet.

[@donfinch862]

Nice one Adam. Jumped in my chair when the shaft first moved! When repairing a shaft, possibly a good idea to clock the rotor as well, to ensure an even air gap between it and the stator, improving the efficiency of the motor. Not much, but it all helps. In this case, a new shaft will be good I suppose

[@Ddabig40mac]

I was looking forward to your spray-weld process on this motor. But, Gun Show! Glad that came apart for you.

[@notsofresh8563]

Hey Adam, If you lose any more weight, you will need to put a longer handle on that dake press to continue being able to apply proper ABOM pressure.....Looking good buddy, keep up the progress on losing those pounds..

[@gregorydiguido5078]

I'm really liking these motor refurbish videos. We usually don't get to see your machine work put to use, but with this project we'll see the motor in action when you run the k&t mill.

[@isaacray8530]

Holy cow! That fish eye perspective really makes the shaft on that armature look warped. Had me goin there for a minute.

[@DansKoiPond]

Good job you know someone who can make a shaft!

[@tremolux13]

This was awesome, I love messing with electric motors so you doing all of this is pure enjoyment. Thank you sir for what you do.. Can’t wait for the next part to start.

[@johndehoog5567]

Love the channel. Appreciate very much your camera work, editing and close ups. Makes a fella feel like he's right there in the shop with you. Also appreciate the cleanliness of the shop in particular the machinery..........no chips or streamers or crude on them. Quite a contrast to some of the shops on KZbin. Thanks for SHARING!! Long time viewer from Canada

[@pontoonrob7948]

Praying you all stay dry and safe...

[@MrUltraworld]

I'm pretty sure he lives in Pensacola, that's about 100 miles west of where Michael will land. He should be OK. But rides will be high. I live near Orlando, went through one last year. It's a nerve wracking experience .

[@justkiddin1980]

Man o man Adam, i have so much respect for the way you work and i learn so much just watching you do work the right way! Real craftsman are a dying breed..

[@davidbarauna5453]

That shaft didn't know what it was up against until you applied some of that ABOMB torque to it.

[@donjohnston9554]

Excellent vid once again. 👌🇨🇦 50 T on that pop. NICE. I worked in the early 90s in RR wheel shop popping off wheel/axle sets at 500T. Great at loading up the apprentice's diapers. 😁

[@robertlee9395]

I bet that made a big boom!

[@throttlebottle5906]

man made earthquakes ;)

[@stxrynn]

That worried me a bit. I didn't know if there was a collar on it, and when EVERYTHING went down, I thought that it was toast. Learned something new!! Thanks man!

[@BlindBatG34]

Fantastic video Abom! I can’t wait for the next installment. The slo-mo video on the press was pretty cool.

[@ChrisBrown-dy8ts]

You were lucky , yours moved , I did a larger size rotor recently , had it on our 60tonne hydraulic press and it just bent the shaft, so made a drawing , chopped shaft off at brg area then drilled the shaft to a thin wall then it pressed out easy, then new shaft made to the drawing. Good video👍

[@jlucasound]

Yes. I was waiting for the bangs. Just saw the "Slo-Mo". AWESOME!!

[@jamesbrewer3020]

Hope you are OK in the storm. Best wishes.

[@amossnowdaharleyman9179]

Just found your channel this weekend and have been watching it a lot. I'm a bit of a hack: have lathe, mill,good drill press and surface grinder at work for machine maintenance etc and to see a good machinist working gives me "ideas".Who knows: another 20 to 40 years and maybe I can actually make something. Course I'll be close to 100 years old by then..... :)

[@Abom79]

Welcome to my channel! 👍🏻

[@mindaugasvaskevicius1818]

As an electronics design engineer I adminre and envy the skills of professional metal workers.

[@parentevan]

Really glad to see you're doing well on your new journey. Keep it up!

[@davids2928]

I love these videos because you get to see the problem solving of an expert. I would have no idea where to even start lol

[@allthegearnoidea6752]

Wow. I am totally amazed you did a great job Adam. I jumped out my skin when that shaft let go, what a great press. You got quite the work out well done Adam. I’m enjoying this rebuild. Regards Chris.

[@tobyw9573]

Hopes and prayers with you, family, friends, and all in the path of the storm!

[@seafurymike]

This is the stuff you don’t see as a home shop machinist. I would never have tackled pressing a shaft out of a motor like that, but now, sure, I’ll give it a go. Nice one and congrats on getting it out in one piece. Looking forward to the rest of the build.

[@thomasbeck6859]

Great press out of the shaft. Beside the startled look and reaction when shaft broke loose, I saw a quick little tapty, tap, tap as you were setting up the press and placing the pins in, LOL

[@robertmccracken72]

Great video Adam. I love to see when someone uses their skill to repair something rather than just toss it out and buy a new one. I know a motor would have been a lot of money, but I also know that rebuilding motors isn't cheap either. I love old machines, and do whatever I can to keep them as close to original as possible, I love the K&T Mills and hope that someday I might have one in my shop too!!! You are looking great, I am sure you feel a lot better too. Every pound that comes off is an accomplishment, you are doing great!!!

[@jimlondon1]

I was waiting for the BANG when you started pressing and I still jumped. I was always a little bit nervous pressing out tight bearings/ shafts /bushes.

[@jeffjacobs9040]

Everything about this video is fantastic. Excellent camera work and editing, good narration, interesting topic. Also, that 6-jaw chuck is sweet!

[@f.g.hammer6814]

Excellent camera view on the dake press. Thanks for sharing.

[@sparkiekosten5902]

Thank you for making the effort to take us along for the ride. May I use the press to push my heart back down where it belongs? When the press "POPPED" I nearly "POOPED"!

[@markblundell9461]

Adam just showed us why machinists make good millwrights. ( force with finesse) I along with 42 thousand others loved the video. .... Who are these 17 other people who didn't?🤔

[@joshsater4044]

Hope you and yours are holding up in that storm Abom!

[@Goman1244]

Man, that was an Abom size project. Loved it.

[@drummerhammar]

Craftsmen like Adam should be teaching young people!

[@Joemama555]

he is!

[@LabRatJason]

Best Slow-mo ever! Good call wearing safety glasses.

[@mavericksdesign7033]

I was on the edge of my seat with suspense before that thing broke loose! Great job Adam.

[@ShnitzlHaus]

best I had was trying to press a pinion out of a new old stock rear axle, cosmoline filled and the pinion had moisture and rusted to the inner diameter of the outer pinion bearing locking it in. naturally I wanted to keep this new old axle and wrestled it onto the press. at nearly maxed out on tonnage and not wanting to back down I smacked the housing with a sharp blow with a small sledge causing the press and axle to jump off the ground. I like your slow motion shots, wish I was filming.

[@MistrMyke]

Guys like you are a national treasure. I would be very happy if you and Eric O. worked in the neighborhood.

[@3347861]

Looking great, Adam. Keep losing weight and you'll have to convert the Dake to electric over hydraulic to maintain Abom force! Thanks for another great video!

[@peterjones6945]

Damn, that takes me back. First job I had after training(1977) was at a place making flameproof electric motors for gas pumps (Tuscan Electric) we only had 5 micron tolerance on the small bearing end covers (35mm OD bearings) Sucked when they cut time in half then told us we had to do 100% bonus so the 2.25 mins became just over a minute for everything (from one bin 'raw casting' back to next bin 'finished') Motor shafts and field lamination packs were good paying thougheven after taking time to offhand grind carbide tools (no replaceable tips for us back then)

[@arcpc53]

Loved the slow motion replay

[@AvocadoAversion]

Adam, you are really good at making these videos.

[@johndieudonne8029]

Cecil B. DeAbom! Really impressed with your cool special video effects. Where you gonna display your Oscar? Good watching.

[@horseshoe_nc]

Adam, congratulations on your weight loss. I can really see difference. Keep it up. Have a 20 ton press at the shop. I'm not a fan of using it.

[@PhilsProjects]

I try and not learn something new every week, I messed up again,. Thanks Adam

[@mattmanyam]

Ha! Nice.😎😂

[@PorkBarrel.]

I would have bet money that shaft wasn't coming out. I did not know those shafts are pressed in always assumed they were made differently. You sure can tell Adam you are losing weight. That's gotta give you a great feeling!

[@f.hababorbitz]

I tried to press the shaft out of a 1HP motor last year. I was using a 20ton HF press. One of the cast iron bucking plates that comes with it, failed, and the rotor shot out sideways, and embedded itself into a sheet rock wall. The rotor is still stuck. My repair was from a previous modification where I turned the shaft down to fit the pulley on the lathe. I figured out later the pulley was never machined true to the V-belt, and I left a sharp inside corner on the motor shaft diameter reduction. This caused a vibration crack, as one day while running the lathe, the pulley goes rolling at me. That was less then 100 hours of usage time before the shaft cracked and failed from an eccentric running pulley. Seeing how hard this pushed for you, I'll have at it again. My shaft is not simple like yours. Oh, and off ebay, I got a pair of hot rolled bucking plates.

[@throttlebottle5906]

take old or remnant carpet and padding and wrap everything hold it with electrical tape on small items and some ratchet/pull straps overall/larger items. it will take the majority of flying part force and make it nearly null at lower tonnage, plus if to happens to still fall it will have a soft landing, thick rubber floor mats help also.

[@doppler3237]

good show, your production keeps getting better . Don't think we don't notice, we do. On something different I think tubalcain may have been my first, but from there it brought me to AvE, you, old tony etc. I linked from tony to a channel Winergaten, talk about some crazy mechanical contraptions, Jeez!

[@SteveSummers]

That shaft was real tight. I always hate the sudden pop when using the press for those stubborn jobs. I remember as a kid being scared at to pop of tires seating on the rim in my dad's repair shop. Thumbs up

[@duaneboutilier1837]

This motor shaft is very dangerous and could att-ack at any time, so ve must deal vit it. The Hydraulic Press Channel might have competition! Ha ha.

[@TreyCook21]

Watch out for that storm! Hope you're okay. Best wishes from NC.

[@iceinkfxc8595]

Adam, Great to see the process of pressing the shaft out and the effort of what it takes to accomplishing the task. I jumped with the shot gun effect when it went off from the stubborn shafts extraction. Excellent video effect with the slow and fast motion of working the hydraulic pump.

[@hoffmanaeronautics6192]

If abom is grunting and groaning it must be a good press fit. Good stuff!

[@moleklm]

Watching you press that shaft out made me think of the time we pressed gears from a Mack truck trans. When it turned loose it really sounded off with a loud bang.

[@steamfan7147]

Used to do a lot of motor work in years past.I usually cut the shaft off flush with the fins and bore most of the center out to relieve the pressure before pressing.There have been times when the shaft would press out hard and the rotor would delaminate.I will sometimes also chuck the rotor and skim the bore in the lathe to true it to the OD and smooth the lamination ridges. I've owned two K&T horizonal mills,both had the same issues with the main drive motor.IMO the motors are the weak link in the machines.They are not the same quality as the rest of the machine from what I have seen.

[@jeffryblackmon4846]

yep, the pressing was cool. The brightly lit shop addition makes the work area very nice.

[@frankmcgorman962]

Waiting for the BANG....still jumped! Stay safe and dry. Cheers!

[@TomokosEnterprize]

Great call on replacing the shaft. The new 4140 will be better than an existing repair for sure.Everyone jumps at the press eh, LOL. I'm looking forward to the next as always.

[@MrAvjones]

Great work, and also hope you survive the storm.