gunsmith help

Fred Lichtenstein · 12-04-2015, 07:46 AM

Hello everyone,
I do a basic gunsmithig works in my workshop. Yesterday the motor on my lathe stopped. I may only assume that it is burnt, because it had a specific smell. Are here people familiar with the gunsmithing? What motors do power your lathe? I need any recommendations before I buy a new tool. Thanks for your time..

Dean Romig · 12-04-2015, 09:00 AM

There should be a manufacturer's nome and model number on your lathe motor. It should be relatively easy to find a suitable replacement once you find that information.

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B. Dudley · 12-04-2015, 09:34 AM

A question likely better asked on a machinists forum. Nothing specific about the type of motor on a lathe if it is ised for gunsmithing or fo any other type of machining. And, as Dean stated, the type of machine will dictate that.

Looking for a replacement of the one that is on there would be a good place to start.

edgarspencer · 12-04-2015, 09:52 AM

Go to Grainger.com They have any and every motor you can dream up.
I have one lathe that uses a 1 HP motor, and another than has 15hp on the spindle and 3 on the rapid traverse, and 1/2 on the coolant. All types of lathes use all types of motors, Gunsmith or not.

Bill Murphy · 12-04-2015, 10:33 AM

Whatever motor you select, be sure to ventilate the exhaust to the outside of the shop.

Double Lab · 12-04-2015, 11:48 AM

Quote:

Originally Posted by Bill Murphy

Whatever motor you select, be sure to ventilate the exhaust to the outside of the shop.

Just for clarification;
A motor is powered by electric. An engine uses some type of fuel which needs ventilation.

Fred Lichtenstein · 12-07-2015, 04:38 AM

Quote:

Originally Posted by edgarspencer

Go to Grainger.com They have any and every motor you can dream up.
I have one lathe that uses a 1 HP motor, and another than has 15hp on the spindle and 3 on the rapid traverse, and 1/2 on the coolant. All types of lathes use all types of motors, Gunsmith or not.

Well, I started to compare rates for new motors… Unfortunately, I cannot spend much money now. I was browsing the Craigslist and there is a second used motor that has features similar to my electric motor. Here the model
https://www.mrosupply.com/motors/ac-...vm3546_baldor/
Except of the phase. I have single phase and this motor is for 3ph. The seller asks reasonable price. Have you tried to convert with VFD?

edgarspencer · 12-07-2015, 09:58 AM

Quote:

Originally Posted by Fred Lichtenstein

Well, I started to compare rates for new motors… Unfortunately, I cannot spend much money now. I was browsing the Craigslist and there is a second used motor that has features similar to my electric motor. Here the model
https://www.mrosupply.com/motors/ac-...vm3546_baldor/
Except of the phase. I have single phase and this motor is for 3ph. The seller asks reasonable price. Have you tried to convert with VFD?

Fred, That motor shown is a C-mount motor, and if the 3 phase motor bolted up, you would still have to spend money for either a VFD (variable frequency drive) or, at the least a simple capacitor phase changer (and then you're only going to get 2/3 the rated power of the 3 phase motor. Stick with a direct replacement, or get your motor rewound.

Bindlestiff · 12-04-2015, 10:37 AM

Or, take your motor to a repair shop and have it fixed. It can be rewound, new bushings and bearings...... etc. Whatever is wrong can be fixed.

Dean Romig · 12-04-2015, 12:44 PM

Ahem.... It has been my experience that a motor is powered by smoke. Without exception, each and every motor I have observed to fail was because the smoke leaked out.... when they stopped smoking they stopped running.

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