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Had this old critter from the 40's offered to me today for 500 bux, needs a real good cleaning but seems pretty good otherwise, no tooling except what's in the pic. I just have to figure out how to run the 440v 3 ph motor in my shop with 230 single phase. Maybe just change the motor. I dunno, talking to an electrician buddy tomorrow.
Reply:Phase converter...https://www.amazon.com/dp/B00FF1S5IS...0XCSFZN1QC1P7ZSent from my SM-G960U using TapatalkI haven't built anything I can't throw away. Perfection is the journey. Mac
Reply:
Originally Posted by Mac's Crew
Phase converter...https://www.amazon.com/dp/B00FF1S5IS...0XCSFZN1QC1P7ZSent from my SM-G960U using Tapatalk
Reply:Can the wiring on the motor be switched to 220v 3 phase. I run my 1960 or so SB 13 on a phase-o-matic converter. You do lose about 1/3 of your horse power but it's sufficient for my needs.
Reply:That's a good deal for that lathe. Good for you! It almost looks like it has the camlock spindle instead of the threaded spindle. One of my lathes is a 13 inch Southbend and it has the threaded spindle, which isn't as new as the one pictured. Every time I use mine I'm pleasantly surprised at how smoothly everything operates. Sent from my E6810 using http://tiny.cc/Forums_reader
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Originally Posted by M J D
Can the wiring on the motor be switched to 220v 3 phase. I run my 1960 or so SB 13 on a phase-o-matic converter. You do lose about 1/3 of your horse power but it's sufficient for my needs.
Reply:Rotary phase converter plus a step up transformer, or perhaps a vid rated for 230 in and 460 out,Miller Trailblazer Pro 350DMiller Suitcase MIGMiller Spectrum 2050Miller Syncrowave 250DXLincoln 210MP
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Originally Posted by villageblacksmith
That's a good deal for that lathe. Good for you! It almost looks like it has the camlock spindle instead of the threaded spindle. One of my lathes is a 13 inch Southbend and it has the threaded spindle, which isn't as new as the one pictured. Every time I use mine I'm pleasantly surprised at how smoothly everything operates. Sent from my E6810 using http://tiny.cc/Forums_reader
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Originally Posted by scsmith42
Rotary phase converter plus a step up transformer, or perhaps a vid rated for 230 in and 460 out,
Reply:Put a bar under the spindle & check the bushings for play.IMPEACH BIDEN!NRA LIFE MEMBERUNITWELD 175 AMP 3 IN1 DCMIDSTATES 300 AMP AC MACHINEGOD HELP AMERICA!Freedom is never more than one generation away from extinction.We didnt pass it to our children in the bloodstream".RONALD REAGAN
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Originally Posted by CAVEMANN
Put a bar under the spindle & check the bushings for play.
Reply:Give ya 600 for it lol
Reply:You a single phase motor will great for over 40 years.If a manual see https://groups.io/g/Southbendmanual/messagesI have a 9A today I have own 16" too.Dave
Originally Posted by 12V71
Had this old critter from the 40's offered to me today for 500 bux, needs a real good cleaning but seems pretty good otherwise, no tooling except what's in the pic. I just have to figure out how to run the 440v 3 ph motor in my shop with 230 single phase. Maybe just change the motor. I dunno, talking to an electrician buddy tomorrow.
Reply:Single phase motor for sure, then it more valuable if you sell it too.If its less than 7 horse and doesnt change direction fast single phase is the way to goDo not argue with an idiot. He will drag you down to his level and beat you with experience.
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Originally Posted by idacal
Single phase motor for sure, then it more valuable if you sell it too.If its less than 7 horse and doesnt change direction fast single phase is the way to go
Reply:Lucky dog.Lincoln, ESAB, Thermal Dynamics, Victor, Miller, Dewalt, Makita, Kalamzoo. Hand tools, power tools, welding and cutting tools.
Reply:Dang, looks like the mate to my 16" machine.
Nice score
Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
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Originally Posted by MinnesotaDave
Dang, looks like the mate to my 16" machine.
Nice score
Reply:
Originally Posted by MinnesotaDave
Dang, looks like the mate to my 16" machine.
Nice score
Reply:It does look like a 16.The S/N is at front way right side witch tell year and size. A tape from center to bed was will also till size too.Dave
Originally Posted by metalman21
It looks a lot like my 1948 13" also. Is it a 16"?
Reply:Full disclosure....I have two lathes right now. One is 3-phase being run off a rotary phase converter. The other I converted to single-phase because it had a bad motor...I thought that was a great idea, and I think it will make it easier to sell, but it's really not an ideal solution.Single-phase motors can cause surface finish issues that mimic tool chatter. The more stout the machine is the less of a problem it is, but it's always a possibility.Similarly, a 3-phase motor being run on a static converter can lead to vibrations similar to the above, and you lose 1/3 of your available HP.VFDs are great for many things, but a 230V single-phase in to 460V 3-phase out is going to be expensive, and VFDs have torque loss both above and below 60Hz....and you can't use the machine switches.One safety thing that comes up is that if you run a single-phase motor on a rotary drum switch you give up the ability to rapidly revers the spindle direction like you can with a 3-phase motor....so if your clothing gets caught in the chuck there is no chance to just smash the drum switch in the other direction and unwind it. No, that's not terribly likely, but something to be aware of.I bought a nice rotary converter recently and I'm now completely sold on that solution....my bigger lathe, mill and surface grinder are all set up for 3-phase. I'm actually considering re powering my smaller lathe with a 3-phase motor...I think I have a spare 2hp that will work. I can repurpose the 2hp Baldor I have on it, or sell it and make a few bucks on the deal.Check out my bench vise website: http://mivise.comMiller Syncrowave 250DXMillermatic 350P with XR AlumaProMiller Regency 200 with 22A feeder and Spoolmatic 3Hobart Champion EliteEverlast PowerTig 210EXT
Reply:
Originally Posted by G-ManBart
Full disclosure....I have two lathes right now. One is 3-phase being run off a rotary phase converter. The other I converted to single-phase because it had a bad motor...I thought that was a great idea, and I think it will make it easier to sell, but it's really not an ideal solution.Single-phase motors can cause surface finish issues that mimic tool chatter. The more stout the machine is the less of a problem it is, but it's always a possibility.Similarly, a 3-phase motor being run on a static converter can lead to vibrations similar to the above, and you lose 1/3 of your available HP.VFDs are great for many things, but a 230V single-phase in to 460V 3-phase out is going to be expensive, and VFDs have torque loss both above and below 60Hz....and you can't use the machine switches.One safety thing that comes up is that if you run a single-phase motor on a rotary drum switch you give up the ability to rapidly revers the spindle direction like you can with a 3-phase motor....so if your clothing gets caught in the chuck there is no chance to just smash the drum switch in the other direction and unwind it. No, that's not terribly likely, but something to be aware of.I bought a nice rotary converter recently and I'm now completely sold on that solution....my bigger lathe, mill and surface grinder are all set up for 3-phase. I'm actually considering re powering my smaller lathe with a 3-phase motor...I think I have a spare 2hp that will work. I can repurpose the 2hp Baldor I have on it, or sell it and make a few bucks on the deal.
Reply:
Originally Posted by smithdoor
It does look like a 16.The S/N is at front way right side witch tell year and size. A tape from center to bed was will also till size too.Dave
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Originally Posted by M J D
Rapidly reversing a south bend like the one in question ( or any other threaded spindle lathe) isn't a very good idea. I've used mine in reverse a time or two but light cuts and and slow speed are the way to go, and even then you can't be sure it won't loosen up giving you a nice heavy surprise.
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Originally Posted by 12V71
The tag on the gear cover says it is a 16, of course I forgot to measure the bed but there is about 10" of bed behind the tailstock in the picture. 36" between centers? Thanks for the South Bend link above.
Originally Posted by G-ManBart
I think the short bed 16 was 34" and the next size up was 46" followed by 58". Assuming you're not going to be turning bit truck axles that's a great combination...heavy frame, thicker bed, etc, etc, but a shorter length so it should be stiffer than a longer bed and it won't take up a ton of space.
Reply:curious as to how close it can maintain. old iron unless it's been babied is usually worn.
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Originally Posted by filetobeef
curious as to how close it can maintain. old iron unless it's been babied is usually worn.
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Originally Posted by 12V71
34" sounds about right. This will just be used for making tools like seal/bushing drivers, custom pins and bushings, etc. I've sent out out a lot of equipment parts for that sort of thing over the years to salvage otherwise junk that could be saved with a bit of ingenuity.
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Originally Posted by Fnord5
No form 1's?
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Originally Posted by G-ManBart
If the spindle bearings are reasonably decent it probably isn't going to be an issue for the type of work he's doing and even if it needs some work the parts are generally available. Other than being grimy it doesn't look bad at all...heck, the left front corner of the compound doesn't even look nibbled on! If I saw that machine for $500 anywhere within about a three hour drive I'd be hooking up the trailer to go get it! Hopefully we get to see pics after it's cleaned up...other than the yellow highlights I suspect it's going to look great.
Reply:California doesn't allow cans, so I totally don't want a lathe to experiment. But I have a few designs in mind. Lol.Maybe I can make it a business and sell out of state (I think sparrow was/is a california company that has to actually go out of state to test their products)
Reply:I know a guy that bought a kit (for a .22) jumped through all the ATF hoops and paid his $200. when he got his stamp he bored and assembled it. It didn't quiet the .22 much so he tried it on a .223... the pressure pulse destroyed it. No refund from the ATF.
Reply:An update on the lathe power issue, I talked to Russ and he suggested a rotary phase convertor feeding a step up transformer. He has some surplus transformers he's checking on (cheap) so for not much more than a new single phase motor I can probably get this going. As a bonus I will be able to run some other stuff either 230 or 460 3 ph...
Mill next?
Reply:
Originally Posted by G-ManBart
Full disclosure....I have two lathes right now. One is 3-phase being run off a rotary phase converter. The other I converted to single-phase because it had a bad motor...I thought that was a great idea, and I think it will make it easier to sell, but it's really not an ideal solution.Single-phase motors can cause surface finish issues that mimic tool chatter. The more stout the machine is the less of a problem it is, but it's always a possibility.Similarly, a 3-phase motor being run on a static converter can lead to vibrations similar to the above, and you lose 1/3 of your available HP.VFDs are great for many things, but a 230V single-phase in to 460V 3-phase out is going to be expensive, and VFDs have torque loss both above and below 60Hz....and you can't use the machine switches.One safety thing that comes up is that if you run a single-phase motor on a rotary drum switch you give up the ability to rapidly revers the spindle direction like you can with a 3-phase motor....so if your clothing gets caught in the chuck there is no chance to just smash the drum switch in the other direction and unwind it. No, that's not terribly likely, but something to be aware of.I bought a nice rotary converter recently and I'm now completely sold on that solution....my bigger lathe, mill and surface grinder are all set up for 3-phase. I'm actually considering re powering my smaller lathe with a 3-phase motor...I think I have a spare 2hp that will work. I can repurpose the 2hp Baldor I have on it, or sell it and make a few bucks on the deal.
Reply:Yeah the single phase motors like to keep going the direction they're already going... figured that out long ago
had about two hours into machining a part with multiple threads and bores in it... got a little impatient right near the end and flipped it into reverse just a skosh before the motor had completely stopped and off it went
plowed my threading tool right into some other threads and a smaller bore
broke the toolbit, messed the piece up beyond repair
.... won't do that again!!!! (famous last words right
)
Reply:
Originally Posted by William McCormick
If you reverse a three-phase motor it will more than likely take out the breaker or fuse protecting it. The single-phase motor may just keep running in the same direction despite the drum switch. Sincerely, William McCormick
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Originally Posted by 12V71
An update on the lathe power issue, I talked to Russ and he suggested a rotary phase convertor feeding a step up transformer. He has some surplus transformers he's checking on (cheap) so for not much more than a new single phase motor I can probably get this going. As a bonus I will be able to run some other stuff either 230 or 460 3 ph...
Mill next?
Reply:
Originally Posted by William McCormick
If you reverse a three-phase motor it will more than likely take out the breaker or fuse protecting it. The single-phase motor may just keep running in the same direction despite the drum switch.
Reply:My high school shop class has South Bends. I sure miss that, we did some blacksmithing too and tempered a blade. Kids have iPads now, no more shop.Do not believe everything that you think.
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Originally Posted by Xsbank
My high school shop class has South Bends. I sure miss that, we did some blacksmithing too and tempered a blade. Kids have iPads now, no more shop.
Reply:12V, another good resource if you don't know already is: https://www.practicalmachinist.com/v...h-bend-lathes/. Oiling the wicks on these old lathes is really important. There are rebuild kits available and a good rebuild manual available on ebay for reasonable expense, well worth buying. Jim
Reply:I don't see a 1/2 nut for threading.
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Originally Posted by jones6780
I don't see a 1/2 nut for threading.
Reply:Things were slow today from the snow last week, so I got SuperFord out with the flatbed trailer and brought it home. No super big rush to get it going. I would rather research before I jump into things.
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Stupid pics were taking forever to load.
Reply:One odd thing I had noticed today is there is no threading indicator for thread starts. Once I have the power worked out then the hunt for tooling begins. I already have a couple of guys watching for a 4 Jaw independent chuck and a steady rest. The next buy might be a Mill... I can already see that could make some tooling to fit the quick change toolpost, like boring bar holders etc. I knew a guy that built all his own tools, now I see how.
Reply:I see you have a mouse-b-gone plugged in... I put a bunch of those around places years ago.... then one day I was in the garage and saw a mouse sitting right next to one of em
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Originally Posted by 12V71
One odd thing I had noticed today is there is no threading indicator for thread starts. Once I have the power worked out then the hunt for tooling begins. I already have a couple of guys watching for a 4 Jaw independent chuck and a steady rest. The next buy might be a Mill... I can already see that could make some tooling to fit the quick change toolpost, like boring bar holders etc. I knew a guy that built all his own tools, now I see how.
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Originally Posted by G-ManBart
Threading dials go missing pretty regularly. It's such a common thing that there are folks 3D printing them for many popular lathes and selling them on eBay. I just looked and it appears someone is making the one you need for something like $78.Sending you a PM about steady rests... |
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发表于 2021-9-1 23:16:02