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Old 06-22-2012, 10:01 AM
barb barb is offline
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Question sheldon lathes

I purchased an old sheldon lathe model EM-56p and my husband and I want to know if anyone knows if these are 3 phase 1 hp motors or what. we thought it looked like a 3 phase but when I printed a manual from online it doesn't say anything about being 3 phase. WE need to know if we need a converter for it or what, so we can hook it up to single phase plugin. can anyone help me out?
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Old 06-22-2012, 11:56 AM
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moe1942 moe1942 is offline
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First Ibll say howdy..Welcome..

The motor should have a data plate somewhere. The wiring is also a good clue to voltage requirement. If no data plate pictures will be required.

Did you ask the seller??
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Old 06-22-2012, 12:31 PM
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Hi Barb,
While you can find a lot of general information on your lathe by searching the model number at sites such as lathes.uk there is no way to know much about the specific motor that's on your lathe other than the specifications listed on the data plate on your motor.

Most manufacturers offered then and still offer a variety of options to meet the needs of individual buyers. Then there is always the possibility that various owners over the decades may have swapped motors to suit their preferences.

In other words, descriptons of the brand, model #, pictures of the motor and data plate, details of the wiring diagram, etc will be necessary for anyone to help you.
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Old 06-22-2012, 09:47 PM
atwatterkent atwatterkent is offline
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Most Sheldon lathes came with a 3 phase motors. I believe that only the 10" model had the option of single or 3 phase motors. Your EM56p model number says E=E style drive, M=13 1/8" swing, 56=bed length, and P=pedestal stand. My catalog does not show a single phase motor as an option. I run my 11" on a rotary phase converter. Before I built the RPC I temporarly replaced the original motoe with a single phase 110V motor and it ran fine. You can find a lot more info on the Sheldon Yahoo Group site where the monitor was if I remember right, a design engineer for the Sheldon Corp. His name is John Knox. I've met him and can say that he's a great guy and very helpful. There is always a chance that the motor was already replaced though so as others have said, only the motor info plate will give you the correct answer.
Bob

Last edited by atwatterkent; 06-22-2012 at 09:50 PM. Reason: Additional info
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Old 06-23-2012, 08:29 AM
1-800miner 1-800miner is offline
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First thing I would do is open the motor cover and see how many wires feed the motor.
Every three phase motor I have seen has nine wires going into the guts of the motor.These nine are adapted in varying configurations down to three lines(and hopefully a fourth ground wire)
Also look at the power cord,how many conductors? What type of plug(if any)
Just because the lathe is a Sheldon does not mean the motor is.
It could have been swapped out years ago for a new motor that was still full of its magic smoke.
I know of a few Ford trucks with Chevy engines in them.
If you still are unsure,ask an electrician.
Don't guess
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Old 06-23-2012, 12:28 PM
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Quote:
Originally Posted by 1-800miner View Post
Don't guess
Sage advice. It is significantly harder--and more expensive--to put the smoke back into an electric motor once you let it out...
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Old 06-23-2012, 01:22 PM
barb barb is offline
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Default sheldon lathes

thank you to all the responses i recieved about my lathe
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Old 06-23-2012, 02:04 PM
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Quote:
Originally Posted by 1-800miner View Post
First thing I would do is open the motor cover and see how many wires feed the motor.
Every three phase motor I have seen has nine wires going into the guts of the motor.These nine are adapted in varying configurations down to three lines(and hopefully a fourth ground wire)
Also look at the power cord,how many conductors? What type of plug(if any)
Just because the lathe is a Sheldon does not mean the motor is.
It could have been swapped out years ago for a new motor that was still full of its magic smoke.
I know of a few Ford trucks with Chevy engines in them.
If you still are unsure,ask an electrician.
Don't guess




If they have to ask all that wiring info is greek. They just need someone familiar with motors to take a look if the data plate is missing..
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Old 06-28-2012, 01:11 PM
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The motor plate will tell you if it is 1 phase or 3 phase. Whichever it is, it is worthwhile to bring it to a motor repair place and have them check it out.


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Old 06-28-2012, 04:00 PM
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Welcome aboard. I was going to suggest counting the wires to. but just seeing the cord cap and whats inside will be a give away.
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