Yeah I know I think o didn’t film it because I was thinking it wouldn’t be saveable but when it was I was surprised. And it’s also a little messy to film but yeah I agree would have been satisfying
Be careful when cleaning stators. They're usually varnished to keep the winding from shorting. A high pressure stream can strip the coating, especially if it's embrittled due to age.
@@VanoverMachineAndRepair Must have lost around 30lb in mass just from removing all the crud there. If the bearings have grease holes, would suggest putting a bit of grease in every year, putting the grease nipples in place of the screws in the casing. Will make them last a lot longer.
Kyle I’m a retired power plant engineer so I must share a tip. When pressing bearings on a motor shaft never use the cooling fins as the press supports. They will crack and cause an imbalance.
The best way to test and guarantee the windings are good is a megger test. This way you test the insulation with DC load and not just basic resistance. If there is a small fault the megger will make it show up.
@@VanoverMachineAndRepair MEGA Ohm tester = Millions of ohms can be resolved/measured. Also other testing called Hi-Pot testing, applying a few thousand volts to the winding and seeing/sensing if a spark jumps through the insulation, (thin or damaged insulation), to the frame or ground.
Thank God for the right tool at the right time! That bearing/pulley puller pulled that thing off in seconds flat and I could just see myself standing there with I don't know like screwdrivers and hammers trying to get that thing off for hours
People who never fix anything are missing out. There's nothing more satisfying than fixing or bringing back to life something that no longer works or isn't working correctly. Especially when you can save yourself $6000.00. Nice job.
Easy mnemonic: the rotor ROTates, the stator is STAtionary. Also be careful when you're pressing the bearings onto the rotor shaft, as it's possible to push the shaft out of the rotor entirely, or knock it out of position. Usually they're stuck in there pretty good, but a little precaution can save you hours of headache for that one time where it isn't. Anyway, great restoration!
I’m probably sad (new subscriber by the way👍), but I’d have loved to see the cleaning of the motor. It must have been very satisfying to see all that grime come away. Thanks for the vid 👍🇬🇧
Dude, I'm getting caught up after a couple of months. Your ad-lib narration is still some of the best on YT. Real shop work and gettin' things done. Love how you take care of your old machines. Keep being awesome, best wishes from NYC!
Kyle, firstly this is just my 2 cents! I personally would like to see more of the process filmed and if that means hour long sobeit, I prefer longer videos. Secondly you clead up everything else except for under the lathe where the motor is located. There is no better time to do it than when you have it apart! Love your content
@@VanoverMachineAndRepair I would definitely take the hour or hour and a half for sure. I definitely prefer the longer format. Snowball engineering puts out long format and I love it!
@@clintonhanson yeah true. I also do a fair bit of editing so the longer the content the less most people watch it and the more hours it takes to edit. I like snowballs videos as well but we have different shooting styles. I probably have 100-300 different camera angles per video which he has significantly less. It makes it a chore to take 2-3 hours of footage with all those cuts and watch it through 3-4 times during the edit. It’s compromise I want to do edits a certain way but also it needs to be sustainable so I can maintain a weekly or biweekly basis. Right now it’s only me doing everything so balance and compromise keeps me away from perfection.
@@VanoverMachineAndRepair I totally get that I am just putting it out there that cutting some of the things out that you do and making the content significantly shorter means I’ll watch it but I’d like to see it all! I know you got to do what’s right for you! Besides that why didn’t you clean out that motor compartment when you had it apart? lol again I am not knocking your content at all I would just like to see more of your process which would mean longer content!
Nice job on the motor. One funny error though when you first said touching the non rotational part of the motor, and said 'stator' but then you sort of changed you mind and said 'rotor' You had it right the first time! Easy way to remember what the rotor is: it's the part that is physically turning. ~~ Cris H BSEE
Hi Kyle, Maintenance can be funny like that. There has been many multiple occasions for me that the "Fix" was nothing more than a good cleaning! You brought that motor back to "Fresh out of the Box" condition, and hopefully you figured out where all that gunk originated from and took care of that! BTW, a little of the steam cleaning action would have been OK to include!! LOL
NEMA standards allow +- 10% on voltage. A 480 volt motor can work on 440 and the reverse is true as well. Motor shops steam clean the stators and then bake in a oven at 350 to dry them back out. Looks like a good repair.
Awesome work. The motor looked brand new. Did you eliminate the transformer? Did you replace the drive belts? I love your little crane: ‘SkyHook’ great idea, I will have to watch that build video. Be well
I dont know how you dried the stator after pressure washing what we did when I worked on motors 60 years ago was put into a giant oven for a few hours then when it was cool to use a 500V Megger to test the windings to earth to make sure there were no shorts. I think you may have been lucky but you didnt show any testing. This is the formula for motor speed (Hz x 60 x 2) / number of poles = no-load RPM (60 x 60 x 2) / 4 7,200 / 4 = 1,800 RPM which would be 1725 rpm under load. In the UK the same motor would run at 1500 (no load) as our mains electrcity runs at 50Hz. I would think you have a 4 pole mtor so it would be 1725rpm.
Holy crap, that's one big Moe Foe motor! You're lucky to have 440V. You can often find odd voltage motors allot cheaper, as most people can't use them. I just swapped a C face motor onto my Bridgeport Mills OEM motor, they wanted 900$ to rewind it. The new motor (Marathon 230V 3PH) was 200$. I just had to make an adapter plate...
Crane on the toolpost was a bold move. Do you tighten down the gibs on the compound before hanging that much off it? I wondered who painted it lime green until I saw your pink press :)
Made me reminisce about my Navy Days, back when I threw wrenches at SH-60B Seahawks. Occasionally we had to disassemble Sonobouy Launcher Stepper Motors. Much like the Lathe Motor, just a standard electric motor, with the biggest difference being a few hundred pounds. My motor only weighed 3 pounds and taking it apart to clean or replace bearings could be done with hand tools.
Bet you never thought you would be using the sky hook for THAT job! And does your wife know you stole her nail polish? 😂 Can't wait to see your shop next month.
Yes it’s a bad transformer. Like 5 or 6k to replace and I wouldn’t get to keep it if I move. It’s part of the building infrastructure. Believe me I am annoyed by it every time I edit a video. No real way around it. Spending that kind of money is a hard sell right now especially if I got to move spaces it will pretty much be wasted money.
@@VanoverMachineAndRepair Yes, I agree with you completely! If I may suggest, some fire proof sound dampener? As it seems towards mid to high frequencies some soundproof panels used in drywall may work and it's not expensive. But you are very very correct in saving the money.
@@TechZF yeah I thought of building a cabinet around it but I need access to it. Also heat is a factor and fire code. I’ll have some solutions but that haven’t come to fruition yet. I am o.c.d so believe me I am aware of the issue lol
@Vanover Machine & Repair , Can the pacemaker's top slide , tool post & tool holder take that kind of torque load ? thats 300 pounds X Length of sky hook arm X 1.5 ( compensating for dynamics when the load bounces as you swing it out) . That looks sketchy to me ....
Yeah, I mean I’ve been doing all kinds of weight on the top slide for a while and it takes it just fine. That compound is also super beefy. It’s bigger than a lot of lathes I’ve seen in that size by a fair margin.
Please sir, can I also ask for a video on the tools that you used, never saw then, the ones that you use for extracting the pulley and the bearings Thanks again!
If it weren’t for the tapeworm that you have, you would be able to bulk up and lift that motor no problem! Just kidding! Awesome video and I love the fact that you are self sufficient!
They were probably standard. Sometimes I use metric sockets/wrenches. I used that wrench because it was long and low profile. There is a crossover sometimes either that or whoever rebuilt it lost the original bolts.
Couple of questions: you pressure washed the windings, but did you do anything to get the moisture out afterwards? Lots of people use DC on the windings to create heat but this takes a few hours. Also, you mentioned 440 VAC motor rating and a possible wiring change; did you change anything? BTW, nice work. Are you going to dust-protect the motor?
I know that you built that "Sky Hook" for such occasions, However I don't think you anticipated this particular occasion. You may never have to move as heavy a weight again. Would a bearing help should you have to move heavier items in the future making the movement easier?
At 2:40, "Move the table off camera...", There is no need to do the move "OFF CAMERA", that is what 'Time Lapse Photography' is for. Just keep the camera running and edit the frame rate/dropped frame counting, in post production editing.
Good job, that motor is what I call "mid-range nasty" only because I have seen worse. I one that was packed solid with 50 years of grease over flow, what a joy to clean.
Man, I would think twice before using the carrage mounted Sky Hook to hoist a 300 pound load. You run the risk of cracking the compound T slot casting.
interesting project. btw, you mentioned that you didn't want to use solvents to clean the motor so you used water. fyi- water is a solvent! also, i didn't see you grease the bearings before installation. most electric motors use greased bearings.
They start making noises, normally due to grease going dry or from being over greased, if they have a greasing point. The rumbling gets worse and worse and eventually they will fail. Almost always plenty of warning before they go completely. Bearings should make little or no noise at all. Trouble with something like a lathe is the rumbling can be covered up with the other general noises of the lathe. I used to use an ultrasonic measuring technique at one company I worked at, it was very good at picking up the clicks and ticks of a failing bearing a long time before any real damage is done and was far cheaper to use that vibration analysis. The company I used, based here in the UK was I think bought out by UE Systems.
Most ac motors are synchronous. The supply frequency (and the number of poles on the motor) dictates the motor rpm. In the uk, a 50hz supply gives a 1440rpm motor or thereabouts. 60hz typically gives about 1700rpm.
Yessir, bearings can make all the difference! I wish I had such a nice lathe (or any lathe, for that matter). To me a quiet machine is very relaxing and reassuring. Keep the maintance up and all Your stuff will run smooth. We have different power (380/50Hz) but everything else applys. When I buy something used I always open it up, clean it and put in new bearings so I am safe with that. But You hanging that on the tailstock got the pucker going for me. Okay, 317 pounds are around 150kg but still. Seems a lot, hanging on a lever and try bending all else... Enjoy the goodness, Kind Regards
18:08 I use McMaster Carr from up here in Canada at least monthly! You are fortunate to have a major location very close by, you can probably get same day delivery !! :) Even up here in northern Canada I can get delivery next day on almost everything! :) My understanding is they do not sell t the general public in Canada, but anyone with a business address can order and pay online, that's what i do! :) AND?? They have better prices than Amazon on virtually everything they sell!
Never figured it out but since it went back there was no messing around needed because I reinstalled it from where it once was. The transformer powers up the entire machine, but the motor is powered through the electronics on the equipment through a motor starter, etc..
@@VanoverMachineAndRepair Yes, but you seemed to indicate the stater was the part that rotated. You corrected your self and looked at the rotor when to said stater.
Reassemble vertical to prevent angular damage to the bearings letting the stator hang on the front bearing had me cringing. Hammering on the sheeve just brinelled both bearings. Options. Front br
Yeah maybe true it’s a lot easier to assemble horizontal. It’s much better than before but I am sure bearings will last the longest with more delicate care
Also how is the stators weight a factor in bearing damage. The full stator weight (50lbs) is always being hug on the bearings when at rest anyways. I can defiantly see the tapping on the bearings causing damage thus why press is best if possible but static weight I have a hard time believing. Especially when those bearings are probably rated at 100 times the static weight load of the stator.
At 7:00, lifting the motor with a long lever attached to the tool post just seems wrong. Soooo much extra leverage to break the tool post or carriage. I don't think maximal cutting forces even come close to the twisting forces exerted at this moment, lifting the motor..... At 7:38, you can see the bouncing in the yellow arm, WHAT PART IS ACTUALLY FLEXING RIGHT NOW. All of that weight (315lbs) on a 2ft lever arm, plus you are pulling and tugging as well for 50-100 extra, (650-750 effective ... bouncing even), all held by the toolpost center bolt and the threaded hole it is screwed into ... bouncing 650++lbs on just 1---> 1/2" or 5/8" bolt. Thanks for making this video!
Would have been worth paying $50 for a UNI-T insulation resistance tester. It can push 100/250/500/1000V through the windings (500v for your 440v Motor) and it’ll find if any of the varnish has decayed from overheating where a simple ohm resistance test with a multimeter wouldn’t. Rarely will these heavy duty overbuilt vintage behemoths ever have a problem as their shear mass (larger enamel wire compared to modern HP alternatives and general huge mass) is their best defense against overheating and general insulation breakdown. Despite the low chance of an issue, the packed in debris might have nicked an area hard to see even when cleaned and if it was a problem the tester would most likely hint at it. To me, given the massive time investment to clean and move it back into its position, spending $50 to make sure I don’t have to pull it back out anytime soon would be money well spent.
Come to a machining channel and watch a restoration video. 🤔 Hmmm. Interesting. I wonder if I go to a restoration channel, will there be a machining video? Is it opposite day? Or opposite channel? Glad you didn't have to replace that monster. It just needed a bath. Like we all do. I shower once a month whether I need to or not. 👍
Only use the SKF Explorer Bearings with "JEM" siffix designator. These muvs use the Mobil Polyrex EM (EM = electric motor) grease which consists of a polyurea thickener and mineral oil base lube , C3 internal clearance, ABEC 3 tolerance, QE6 noise specifications, low noise, low vibes, all all specifically formulated for kickass industrial electric motors...so SICK need Robitussin homie! Get some!
There is no 1150 RPM motor. 60hz *60sec=3500 -theoretical maximum for any mains powered AC motor. 1750 is exactly half of that, because the winding pattern is set up for half the speed. There is no winding pattern possible for 1150 RPM. A winding pattern for 1167 RPM can lead to 1150 measured speed when you slightly load the motor, but this is not a useful parameter.
Yeah agreed in theory. I got a tefc for the lion but on this I’ll run it for 10-15 years and rebuild it again or replace it. Maybe then I’ll have more money 🤣
@@dundasjunctionmodelr.r-jam8267 well since you the expert let me learn from you. What is best way to replace bearings on a motor. My thought is pull them off. (Doesn’t matter how) press bearing onto stator shaft on both ends. Avoid using a hammer and press on center of bearing. Then lightly tap the end bells on with a mallet. Some people freeze or warm bearings or shafts. What is the preferred method for not damaging the bearings?
@@VanoverMachineAndRepair we used a induction bearing heater or a press, inner race only, in smaller motors I used a torch 6205 bearings or smaller, on the bigger bearing we used induction bearing heater’s
@@VanoverMachineAndRepair the biggest challenge in repairing industrial motors AC and DC is finding a good machine shop, we were very fussy on bearing fits resleeve to our specs as indicated by ASEA , journals etc
I have a transformer that is super loud. I also switched mics. I want to up my quality. I will. But the camera I want is 6k. When I do it will be a big jump for sure
13:34 NEVER EVER lift with your back like that again! You are gonna ruin your spine in no time like that. Lift with your legs and with straightened back.
I can most definitely assure you , that you can find a 15hp baldor for $2500.00 or under All day long. If your paying $6000.00 Your definitely being ripped off or asking to be ripped off
Im here for scraping out the nasty shit, next time get that close up! Good stuff otherwise. Some guys i watch would have made that a multipart series, thanks for not doing that as well.
Awww, pressurewashing the dirty greasy motor was the best part and we didnt get to see it 😂😂. Great job!!
Yeah I know I think o didn’t film it because I was thinking it wouldn’t be saveable but when it was I was surprised. And it’s also a little messy to film but yeah I agree would have been satisfying
Be careful when cleaning stators. They're usually varnished to keep the winding from shorting. A high pressure stream can strip the coating, especially if it's embrittled due to age.
@@bobweiram6321 yeah very true
@@VanoverMachineAndRepair Must have lost around 30lb in mass just from removing all the crud there. If the bearings have grease holes, would suggest putting a bit of grease in every year, putting the grease nipples in place of the screws in the casing. Will make them last a lot longer.
Kyle I’m a retired power plant engineer so I must share a tip. When pressing bearings on a motor shaft never use the cooling fins as the press supports. They will crack and cause an imbalance.
Ok good to know
I would suggest that any time you are lifting anything above the ways of a lathe, a piece of protective plywood over the ways is good insurance
Yeah not a bad practice
14:52 You had it right first :) .. The "Rotor" on a motor always rotates, the "Stator" is stationary :)
Yeah I did
Hahah when he did that and continued on I said to myself, "did he just switch that from right to wrong or did I hear it wrong".
He knew what he meant. It's not easy trying to do your job, narrate, and film all at the same time. We have faith in you Kyle, lol.
@@Chromevulcan I appreciate it man.
The best way to test and guarantee the windings are good is a megger test. This way you test the insulation with DC load and not just basic resistance. If there is a small fault the megger will make it show up.
Never heard of that before
@@VanoverMachineAndRepair MEGA Ohm tester = Millions of ohms can be resolved/measured. Also other testing called Hi-Pot testing, applying a few thousand volts to the winding and seeing/sensing if a spark jumps through the insulation, (thin or damaged insulation), to the frame or ground.
The best way to test the windings is to Megger them. The best way to guarantee the windings is to re-insulate them and then Megger test them again.
Job well done Kyle. Should last for many more years.
I hope so.
Thank God for the right tool at the right time! That bearing/pulley puller pulled that thing off in seconds flat and I could just see myself standing there with I don't know like screwdrivers and hammers trying to get that thing off for hours
Yeah I have not always had the right tools. Glad I did this time.
reminds me of Abom with the Skyhook and noticed the Fireball vice too
Yeah some similarities
People who never fix anything are missing out. There's nothing more satisfying than fixing or bringing back to life something that no longer works or isn't working correctly. Especially when you can save yourself $6000.00.
Nice job.
100% agree
Easy mnemonic: the rotor ROTates, the stator is STAtionary. Also be careful when you're pressing the bearings onto the rotor shaft, as it's possible to push the shaft out of the rotor entirely, or knock it out of position. Usually they're stuck in there pretty good, but a little precaution can save you hours of headache for that one time where it isn't. Anyway, great restoration!
Thanks
I’m probably sad (new subscriber by the way👍), but I’d have loved to see the cleaning of the motor. It must have been very satisfying to see all that grime come away. Thanks for the vid 👍🇬🇧
Next time!
@@VanoverMachineAndRepair 20 years from now? Who will remember? Who will still be alive?
@@johnrussell6620 true hopefully me
Dude, I'm getting caught up after a couple of months. Your ad-lib narration is still some of the best on YT. Real shop work and gettin' things done. Love how you take care of your old machines. Keep being awesome, best wishes from NYC!
Appreciate that. Love old iron too
Kyle, firstly this is just my 2 cents! I personally would like to see more of the process filmed and if that means hour long sobeit, I prefer longer videos. Secondly you clead up everything else except for under the lathe where the motor is located. There is no better time to do it than when you have it apart! Love your content
I appreciate the feedback I am definitely cutting down 1.5-4 hours of footage into 20-40 min usually.
@@VanoverMachineAndRepair I would definitely take the hour or hour and a half for sure. I definitely prefer the longer format. Snowball engineering puts out long format and I love it!
@@clintonhanson yeah true. I also do a fair bit of editing so the longer the content the less most people watch it and the more hours it takes to edit. I like snowballs videos as well but we have different shooting styles. I probably have 100-300 different camera angles per video which he has significantly less. It makes it a chore to take 2-3 hours of footage with all those cuts and watch it through 3-4 times during the edit. It’s compromise I want to do edits a certain way but also it needs to be sustainable so I can maintain a weekly or biweekly basis. Right now it’s only me doing everything so balance and compromise keeps me away from perfection.
@@VanoverMachineAndRepair I totally get that I am just putting it out there that cutting some of the things out that you do and making the content significantly shorter means I’ll watch it but I’d like to see it all! I know you got to do what’s right for you! Besides that why didn’t you clean out that motor compartment when you had it apart? lol again I am not knocking your content at all I would just like to see more of your process which would mean longer content!
@@clintonhanson noted! Appreciate feedback
Great repair, thanks for sharing
Thanks for watching!
Great video Kyle, you are so impressive to get right into it and fix it.
Glad you enjoyed it
Nice job on the motor. One funny error though when you first said touching the non rotational part of the motor, and said 'stator' but then you sort of changed you mind and said 'rotor' You had it right the first time! Easy way to remember what the rotor is: it's the part that is physically turning. ~~ Cris H BSEE
Yeah others have said similar comments
Just found your channel. Very well done video. You have a really engaging style. Keep up the good work.
Thanks I appreciate it
Nice job Kyle. That was certainly worth doing, and a lot cheaper than a new 440v 15 HP motor!
Indeed
Hi Kyle, Maintenance can be funny like that. There has been many multiple occasions for me that the "Fix" was nothing more than a good cleaning! You brought that motor back to "Fresh out of the Box" condition, and hopefully you figured out where all that gunk originated from and took care of that! BTW, a little of the steam cleaning action would have been OK to include!! LOL
Very true! Next time
NEMA standards allow +- 10% on voltage. A 480 volt motor can work on 440 and the reverse is true as well. Motor shops steam clean the stators and then bake in a oven at 350 to dry them back out. Looks like a good repair.
Good to know thanks
well done. newbee to your channel, really enjoy.
loving the arbor press..pink makes it work
Really appreciate it
Awesome work. The motor looked brand new. Did you eliminate the transformer? Did you replace the drive belts?
I love your little crane: ‘SkyHook’ great idea, I will have to watch that build video.
Be well
I did not eliminate the transformer I put it back together as it was. I would have if I had to replace the motor. I installed new belts last year.
@@VanoverMachineAndRepair just watched the sky hook 2 videos. Looks like it will save your back. Well done.
Be Well
@@davidmosscrop2374 thanks
Well done! Personally, at age 74 I try to work on a much smaller scale like 1 1/2" centre height comes to mind!
Yeah right on
Wow, crazy good. Amazing how silent the motor is. .
I know, right?
Nice video, Kyle! I am always fascinated by the gross-looking machines that end up perfect with a little effort. Thanks!
You bet!
Awe was hoping to see a rewinding repair video. Sad .. still big difference cleaning it. Nice work!
lol yeah I am glad I didn’t have to rewind it
You have such a great attitude. I’m pretty sure I would have chucked that motor. Fantastic job as usual.
I appreciate it
So true about your suffering is our entertainment :)
I'm sorry, but glad you filmed it! Thanks Kyle for all your awesome content.
Yeah glad you enjoyed it
I dont know how you dried the stator after pressure washing what we did when I worked on motors 60 years ago was put into a giant oven for a few hours then when it was cool to use a 500V Megger to test the windings to earth to make sure there were no shorts. I think you may have been lucky but you didnt show any testing.
This is the formula for motor speed
(Hz x 60 x 2) / number of poles = no-load RPM
(60 x 60 x 2) / 4
7,200 / 4 = 1,800 RPM
which would be 1725 rpm under load.
In the UK the same motor would run at 1500 (no load) as our mains electrcity runs at 50Hz.
I would think you have a 4 pole mtor so it would be 1725rpm.
Interesting yeah I air dryed it
Holy crap, that's one big Moe Foe motor! You're lucky to have 440V. You can often find odd voltage motors allot cheaper, as most people can't use them. I just swapped a C face motor onto my Bridgeport Mills OEM motor, they wanted 900$ to rewind it. The new motor (Marathon 230V 3PH) was 200$. I just had to make an adapter plate...
PS - You had it right, the rotor rotates, the stator is stationary, and the one in the outer case with all the copper windings.
Yeah 440v for the win
Crane on the toolpost was a bold move. Do you tighten down the gibs on the compound before hanging that much off it? I wondered who painted it lime green until I saw your pink press :)
Nah no tightening down of gibs. It’s pretty tight though
Made me reminisce about my Navy Days, back when I threw wrenches at SH-60B Seahawks. Occasionally we had to disassemble Sonobouy Launcher Stepper Motors. Much like the Lathe Motor, just a standard electric motor, with the biggest difference being a few hundred pounds. My motor only weighed 3 pounds and taking it apart to clean or replace bearings could be done with hand tools.
Very nice thanks for sharing
Bet you never thought you would be using the sky hook for THAT job! And does your wife know you stole her nail polish? 😂 Can't wait to see your shop next month.
I got my own nail polish in many colors
Great videos !
Thanks!
Grettings, what causes your background humming? Do you hear it like the mic hear? Doesn't it causes you disconfort? Thanks for the video.
Yes it’s a bad transformer. Like 5 or 6k to replace and I wouldn’t get to keep it if I move. It’s part of the building infrastructure. Believe me I am annoyed by it every time I edit a video. No real way around it. Spending that kind of money is a hard sell right now especially if I got to move spaces it will pretty much be wasted money.
@@VanoverMachineAndRepair Yes, I agree with you completely! If I may suggest, some fire proof sound dampener? As it seems towards mid to high frequencies some soundproof panels used in drywall may work and it's not expensive.
But you are very very correct in saving the money.
@@TechZF yeah I thought of building a cabinet around it but I need access to it. Also heat is a factor and fire code. I’ll have some solutions but that haven’t come to fruition yet. I am o.c.d so believe me I am aware of the issue lol
@Vanover Machine & Repair , Can the pacemaker's top slide , tool post & tool holder take that kind of torque load ? thats 300 pounds X Length of sky hook arm X 1.5 ( compensating for dynamics when the load bounces as you swing it out) . That looks sketchy to me ....
Yeah, I mean I’ve been doing all kinds of weight on the top slide for a while and it takes it just fine. That compound is also super beefy. It’s bigger than a lot of lathes I’ve seen in that size by a fair margin.
great video Kyle.......always great content on your channel...Paul
Yeah thanks for stop pay by Paul
Great video, thanks for sharing.
Thanks for watching!
I never would have thought that the tool post can handle that much weight.
Yes indeed
Please sir, can I also ask for a video on the tools that you used, never saw then, the ones that you use for extracting the pulley and the bearings
Thanks again!
Got call there are so many tools…
Is it ok to put that much leverage on the cross slide, compound and tool holder?
Yep
Nice one Kyle.
Thanks
Who thought the skyhook would come in so handy so quick
I know right
If it weren’t for the tapeworm that you have, you would be able to bulk up and lift that motor no problem! Just kidding! Awesome video and I love the fact that you are self sufficient!
You got that right! I can gain weight to save my life
Have I seen right ? Metric bolts on an ameircan peacemaker ? Or does exsist bolts with imperial threats and metric heads ( 18 mm )
They were probably standard. Sometimes I use metric sockets/wrenches. I used that wrench because it was long and low profile. There is a crossover sometimes either that or whoever rebuilt it lost the original bolts.
Love this rebuild process, ❤should seen some of the washing and cleaning of it to
Next time!
Couple of questions: you pressure washed the windings, but did you do anything to get the moisture out afterwards? Lots of people use DC on the windings to create heat but this takes a few hours. Also, you mentioned 440 VAC motor rating and a possible wiring change; did you change anything? BTW, nice work. Are you going to dust-protect the motor?
No I air dried it and used compressed air as well. I tested the windings as well. No I did not cover the vent holes
I know that you built that "Sky Hook" for such occasions, However I don't think you anticipated this particular occasion. You may never have to move as heavy a weight again. Would a bearing help should you have to move heavier items in the future making the movement easier?
Yeah, I actually bought a tapered needle bearing for the bottom, but I haven’t dropped it in there yet
At 2:40, "Move the table off camera...", There is no need to do the move "OFF CAMERA", that is what 'Time Lapse Photography' is for. Just keep the camera running and edit the frame rate/dropped frame counting, in post production editing.
Thanks for telling me how to film my videos
Nice Work there ... But normaly you never tigthen one Side until the other IS in Place. This can lead To some tension INSIDE the bearing.
Thanks
Good job, that motor is what I call "mid-range nasty" only because I have seen worse. I one that was packed solid with 50 years of grease over flow, what a joy to clean.
Dang
Man, I would think twice before using the carrage mounted Sky Hook to hoist a 300 pound load. You run the risk of cracking the compound T slot casting.
Yeah I thought about that but it’s good.
7:02. Is that chain really rated for that job?
500lbs is what skyhook is rated for so yes
interesting project. btw, you mentioned that you didn't want to use solvents to clean the motor so you used water. fyi- water is a solvent! also, i didn't see you grease the bearings before installation. most electric motors use greased bearings.
Water is not a solvent. You never seen an msds sheet on water. Also lots of motors used sealed bearings. That’s what I used
Did you disconnect the power?
Yes
I had no idea how much the bearings contribute to motor noise. Thanks for sharing.
Yeah they do I wonder though if burning smell was coming from the grime getting between the rotor and stator
They start making noises, normally due to grease going dry or from being over greased, if they have a greasing point. The rumbling gets worse and worse and eventually they will fail. Almost always plenty of warning before they go completely. Bearings should make little or no noise at all. Trouble with something like a lathe is the rumbling can be covered up with the other general noises of the lathe.
I used to use an ultrasonic measuring technique at one company I worked at, it was very good at picking up the clicks and ticks of a failing bearing a long time before any real damage is done and was far cheaper to use that vibration analysis. The company I used, based here in the UK was I think bought out by UE Systems.
The smoke got out. That's always bad...
Yeah got to keep the smoke in
Nice work.🏁😁😉
Thanks! 👍
Most ac motors are synchronous. The supply frequency (and the number of poles on the motor) dictates the motor rpm. In the uk, a 50hz supply gives a 1440rpm motor or thereabouts. 60hz typically gives about 1700rpm.
Yeah 60hz in us 1725ish is a common motor rpm for us
Yessir, bearings can make all the difference! I wish I had such a nice lathe (or any lathe, for that matter). To me a quiet machine is very relaxing and reassuring. Keep the maintance up and all Your stuff will run smooth. We have different power (380/50Hz) but everything else applys. When I buy something used I always open it up, clean it and put in new bearings so I am safe with that.
But You hanging that on the tailstock got the pucker going for me. Okay, 317 pounds are around 150kg but still. Seems a lot, hanging on a lever and try bending all else...
Enjoy the goodness, Kind Regards
Thanks I appreciate it
Tool post at 6:35, not tailstock!
@@johnrussell6620 My bad, it was late, I was stoned.
Great job but at 22:14 you do give the new bearings a hard time.
What would be the better way to do that
@@VanoverMachineAndRepair Shrink it on. Clean the shaft and bore. If you have to press it support the shaft at the rear.
@@who-gives-a-toss_Bear sounds good on the next motor I’ll do that. Might have another coming up
Rotor=rotate, stator=stationary...now you know. Cheers
Yep
Love the video, ,but my eye started twitching when you put that beautiful re-built motor into a pig sty of a motor hole...Arghh! ;-p
Yeah real world stuff
Kudos on getting all those camera sgots of disassembly! That cant have been wasy to work around
Yeah of course
Whew glad it was just bearings!
Yeah and the muck
I didn’t see you pack the bearings with grease? Did you do that off camera? 🤷♂️
They were pre lubed
I actually would have liked seeing it cleaned up.
Yeah I know
18:08 I use McMaster Carr from up here in Canada at least monthly! You are fortunate to have a major location very close by, you can probably get same day delivery !! :)
Even up here in northern Canada I can get delivery next day on almost everything! :) My understanding is they do not sell t the general public in Canada, but anyone with a business address can order and pay online, that's what i do! :)
AND?? They have better prices than Amazon on virtually everything they sell!
Yes most of the time same day if I order before 10am
Could you figure out, if it´s 1150 or 1750 rpm? And have you plugged it directly without the transformer in your 440V outlet now?
Great Job 👍
Never figured it out but since it went back there was no messing around needed because I reinstalled it from where it once was. The transformer powers up the entire machine, but the motor is powered through the electronics on the equipment through a motor starter, etc..
I'm confused, it seems like you're confusing the stater and the rotor, the stater is the fixed winding and the rotor is the part that rotates, Yes?
Rotor rotates
@@VanoverMachineAndRepair Yes, but you seemed to indicate the stater was the part that rotated. You corrected your self and looked at the rotor when to said stater.
Ah, the sweet smell of ozone and burning varnish 👃 ❤️
Indeed
Reassemble vertical to prevent angular damage to the bearings letting the stator hang on the front bearing had me cringing. Hammering on the sheeve just brinelled both bearings. Options. Front br
Yeah maybe true it’s a lot easier to assemble horizontal. It’s much better than before but I am sure bearings will last the longest with more delicate care
Also how is the stators weight a factor in bearing damage. The full stator weight (50lbs) is always being hug on the bearings when at rest anyways. I can defiantly see the tapping on the bearings causing damage thus why press is best if possible but static weight I have a hard time believing. Especially when those bearings are probably rated at 100 times the static weight load of the stator.
At 7:00, lifting the motor with a long lever attached to the tool post just seems wrong. Soooo much extra leverage to break the tool post or carriage. I don't think maximal cutting forces even come close to the twisting forces exerted at this moment, lifting the motor..... At 7:38, you can see the bouncing in the yellow arm, WHAT PART IS ACTUALLY FLEXING RIGHT NOW. All of that weight (315lbs) on a 2ft lever arm, plus you are pulling and tugging as well for 50-100 extra, (650-750 effective ... bouncing even), all held by the toolpost center bolt and the threaded hole it is screwed into ... bouncing 650++lbs on just 1---> 1/2" or 5/8" bolt. Thanks for making this video!
Well it worked great 👍
Would have been worth paying $50 for a UNI-T insulation resistance tester. It can push 100/250/500/1000V through the windings (500v for your 440v Motor) and it’ll find if any of the varnish has decayed from overheating where a simple ohm resistance test with a multimeter wouldn’t.
Rarely will these heavy duty overbuilt vintage behemoths ever have a problem as their shear mass (larger enamel wire compared to modern HP alternatives and general huge mass) is their best defense against overheating and general insulation breakdown.
Despite the low chance of an issue, the packed in debris might have nicked an area hard to see even when cleaned and if it was a problem the tester would most likely hint at it. To me, given the massive time investment to clean and move it back into its position, spending $50 to make sure I don’t have to pull it back out anytime soon would be money well spent.
Maybe on the next motor rebuild I’ll buy one I did know about them until the comments
Stator=stationary windings rotor=rotating windings
Very impressive Kyle and your mod on the Sky Hook was spot on sir. Thank you for sharing.
Thank you! Worked out well
You were right the first time about Witch is the stator and witch is the rotor. But then you corrected yourself wrong. 😉
Yep I know
Jesus how the heck do they expact a surgeon to find room to fit that thing inside the poor patient
lol true
Come to a machining channel and watch a restoration video.
🤔 Hmmm. Interesting.
I wonder if I go to a restoration channel, will there be a machining video?
Is it opposite day? Or opposite channel?
Glad you didn't have to replace that monster. It just needed a bath. Like we all do. I shower once a month whether I need to or not. 👍
Yes indeed machining and restoration go hand in hand
Only use the SKF Explorer Bearings with "JEM" siffix designator. These muvs use the Mobil Polyrex EM (EM = electric motor) grease which consists of a polyurea thickener and mineral oil base lube , C3 internal clearance, ABEC 3 tolerance, QE6 noise specifications, low noise, low vibes, all all specifically formulated for kickass industrial electric motors...so SICK need Robitussin homie! Get some!
Ok cool got another coming up I’ll try to grab those.
Not sure why but the green and blue paint on the motor is quite a neat look. Too bad it's something out of the way not to be seen.
Yeah true
Nice one Kyle👍👍👍
Glad you enjoyed it
👍👍👍👍👍👍
👍
For the size of your motors, you really need 3 phase service.
I have 3 phase
I understand you are in a rush but hit that mess back there with some love, or at least a shop vac.
👍
You can skip explaining, disassembling, working with metal, anything you want, but never ever skip cleaning scenes! 😅
lol. You must be someone that likes to watch those rug washing videos.
Я думал ты его будешь перематывать, он был в ужасном состоянии на внешний вид.
Yeah luckily didn’t have to
I'm whispering, stators are stationary, rotors rotate. What? l didn't say something.🙄
Yeah I know I always get them mixed up even though it’s obvious
The skyhook has now paid for itself
Good morning
until you lift that item that's just heavy enough you screw up your lathe.
Like a broken compound T slot...
The slot on that compound is super beefy this is not gonna be broken by that
It’s gonna take a lot more force to break the lathe than that
Yes indeed
There is no 1150 RPM motor. 60hz *60sec=3500 -theoretical maximum for any mains powered AC motor. 1750 is exactly half of that, because the winding pattern is set up for half the speed. There is no winding pattern possible for 1150 RPM. A winding pattern for 1167 RPM can lead to 1150 measured speed when you slightly load the motor, but this is not a useful parameter.
👍
Baldor is good quality motor
Indeed
You need a TEFC motor for your lathe application, open Drip-proof motors not the correct motor
Yeah agreed in theory. I got a tefc for the lion but on this I’ll run it for 10-15 years and rebuild it again or replace it. Maybe then I’ll have more money 🤣
@@VanoverMachineAndRepair I am a electric apparatus service tech , now retired, repair electric motors for over 40 years , i am a winder too
@@dundasjunctionmodelr.r-jam8267 well since you the expert let me learn from you. What is best way to replace bearings on a motor. My thought is pull them off. (Doesn’t matter how) press bearing onto stator shaft on both ends. Avoid using a hammer and press on center of bearing. Then lightly tap the end bells on with a mallet. Some people freeze or warm bearings or shafts. What is the preferred method for not damaging the bearings?
@@VanoverMachineAndRepair we used a induction bearing heater or a press, inner race only, in smaller motors I used a torch 6205 bearings or smaller, on the bigger bearing we used induction bearing heater’s
@@VanoverMachineAndRepair the biggest challenge in repairing industrial motors AC and DC is finding a good machine shop, we were very fussy on bearing fits resleeve to our specs as indicated by ASEA , journals etc
It's amazing
Thank you
Great repair. There's some noise distortion in this and a few other of your vids. Vids would be even better if you can get rid of it.
I have a transformer that is super loud. I also switched mics. I want to up my quality. I will. But the camera I want is 6k. When I do it will be a big jump for sure
13:34 NEVER EVER lift with your back like that again! You are gonna ruin your spine in no time like that. Lift with your legs and with straightened back.
👍
I can most definitely assure you , that you can find a 15hp baldor for $2500.00 or under
All day long.
If your paying $6000.00
Your definitely being ripped off or asking to be ripped off
Agreed that’s list price
There a lady on youtube that repairs motor windings with less tools. its super cool to watch how other countries do it.
Yes I seen her
Woah, that sky hook is the bees knees.
It really is
Im here for scraping out the nasty shit, next time get that close up! Good stuff otherwise. Some guys i watch would have made that a multipart series, thanks for not doing that as well.
Yeah agreed will do