12 volt dc motors for sale!!

brianna187

brianna187

BRIANNA SINCE 1988
Silver Member
I have 9 of these in stock. I bought them new surplus, and they are taking up space in my shop. They have a 3 hole mount. They are 12 v DC motors. I am asking $20.00 ea. and free shipping USA.

Anyone interested let me know.

also my paypal is hmalakoff@chartermi.net
 

Attachments

  • DSC_0008-1.jpg
    DSC_0008-1.jpg
    41 KB · Views: 821
  • DSC_0009-1.jpg
    DSC_0009-1.jpg
    49.4 KB · Views: 825
  • DSC_0010-1.jpg
    DSC_0010-1.jpg
    54.4 KB · Views: 837
Lee,

What's the amperage draw from those motors?

RPM?

Thanks,

Gary
 
GEBrown said:
Lee,

What's the amperage draw from those motors?

RPM?

Thanks,

Gary
Click to expand...

I am not sure...they were a surplus deal. We did fire one up and they seemed to turn fairly fast. I believe they would be just a good general motor.
 
GEBrown said:
Lee,

What's the amperage draw from those motors?

RPM?

Thanks,

Gary
Click to expand...

Gary, I have tested these motors with a motor controller from: http://www.bakatronics.com/shop/item.aspx?itemid=444
I used a 24v power supply rated at 12.5A. The motor at start up drew about 10A but dropps down to between 2.5 and 3A quickly. I would if it where me use a power supply no less than say 5 or 7.5 amps. I was able to drive a taig spindle head stock with chuck on it very easily. I think these motors will run up to 5 or 6K rpm. I have not confirmed this however they are way faster than any cue builder will need. These motors are a steel at this price.

Jim.
 
Jim,

So they could be rated roughly 1/3 HP - not bad.

Thanks for the info.

Gary
 
GEBrown said:
Jim,

So they could be rated roughly 1/3 HP - not bad.

Thanks for the info.

Gary
Click to expand...

Gary, I am not sure of the conversion and the motor does not have that information. However that sound correct.

Jim.
 
Mc2 said:
Gary, I am not sure of the conversion and the motor does not have that information. However that sound correct.

Jim.
Click to expand...

Jim,

DC watts are real easy to calculate: Power (watts) = volts x amps.

So it looks to me like this motor peaks at around 10 amps, which give 240 watts.

1 horsepower is 745.699872 watts (like we need that kind of precision!!:))

So 240 divided by 745.xxxx gives .32 HP.

Thanks again.

Gary
 
GEBrown said:
Jim,

DC watts are real easy to calculate: Power (watts) = volts x amps.

So it looks to me like this motor peaks at around 10 amps, which give 240 watts.

1 horsepower is 745.699872 watts (like we need that kind of precision!!:))

So 240 divided by 745.xxxx gives .32 HP.

Thanks again.

Gary
Click to expand...

Gary, sounds easy. My question would be, would you use start up current or running current in your equestion?

thanks, Jim.
 
Mc2 said:
Gary, sounds easy. My question would be, would you use start up current or running current in your equestion?

thanks, Jim.
Click to expand...

Hey Jim,

I think you want to use peak current to measure the HP of the motor. When it was spinning up, it was overcoming the inertia of the motor windings and that of the headstock spindle. It could probably pull more than that if you stalled it, but then you'd likely burn up the windings.

While you had some load on it - the headstock spindle - it didn't sound like you were turning anything, which would put more load on the motor. The more load, the more amps it's going to pull until it stalls or the drive belt slips. That motor can probably pull some more current than 10 amps before it melts down, but 10 amps seemed like a useable number.

I tried to Google a more definitive answer/technique, but didn't come up with anything better.

There's probably some mechanical or electrical engineer on this forum sitting back giggling at my logic, but "That's my story and I'm sticking to it":):)

Gary
 
Mc2 said:
Gary, I have tested these motors with a motor controller from: http://www.bakatronics.com/shop/item.aspx?itemid=444
I used a 24v power supply rated at 12.5A. The motor at start up drew about 10A but dropps down to between 2.5 and 3A quickly. I would if it where me use a power supply no less than say 5 or 7.5 amps. I was able to drive a taig spindle head stock with chuck on it very easily. I think these motors will run up to 5 or 6K rpm. I have not confirmed this however they are way faster than any cue builder will need. These motors are a steel at this price.

Jim.
Click to expand...

Jim,

Is there a "how to" on setting up these controllers and motors? Is there a set you can buy or anything? Thanks for any information provided.

William
 
GEBrown said:
Hey Jim,

I think you want to use peak current to measure the HP of the motor. When it was spinning up, it was overcoming the inertia of the motor windings and that of the headstock spindle. It could probably pull more than that if you stalled it, but then you'd likely burn up the windings.

While you had some load on it - the headstock spindle - it didn't sound like you were turning anything, which would put more load on the motor. The more load, the more amps it's going to pull until it stalls or the drive belt slips. That motor can probably pull some more current than 10 amps before it melts down, but 10 amps seemed like a useable number.

I tried to Google a more definitive answer/technique, but didn't come up with anything better.

There's probably some mechanical or electrical engineer on this forum sitting back giggling at my logic, but "That's my story and I'm sticking to it":):)

Gary
Click to expand...


Good attitude I think Gary. Actually I am headed out to Vegas in the morning. One of the guys I will be out there with will know the answer to this. If I get a chance I will ask.

Jim .
 
GEBrown said:
Hey Jim,

I think you want to use peak current to measure the HP of the motor. When it was spinning up, it was overcoming the inertia of the motor windings and that of the headstock spindle. It could probably pull more than that if you stalled it, but then you'd likely burn up the windings.

While you had some load on it - the headstock spindle - it didn't sound like you were turning anything, which would put more load on the motor. The more load, the more amps it's going to pull until it stalls or the drive belt slips. That motor can probably pull some more current than 10 amps before it melts down, but 10 amps seemed like a useable number.

I tried to Google a more definitive answer/technique, but didn't come up with anything better.

There's probably some mechanical or electrical engineer on this forum sitting back giggling at my logic, but "That's my story and I'm sticking to it":):)

Gary
Click to expand...

I think your logic will prevail and I wholeheartedly agree with you. An electric motor only uses as much current, and only develops as much H/P as is needed for the task it is performing. At start up 10 amps were needed and used. A free wheeling 10 H/P motor uses very little energy as those who use a rotary phase converter can attest to. Since I'm certainly no electrical engineer I can't say for certain that this motor can run at the 10 amp level for sustained periods of time without harming some windings, I'm sure it would be much higher than the amps used while free wheeling.

Dick
 
Last edited:
jg cues clear your pm box i tryed sending the following info on tracking

we ship those thru the us mail there tracking is no where near as advanced as ups ill have one of the girls give you info on monday if you call the the office around 10 am est 517 639 3190 ask for nicole
thanks lee
 
You must log in or register to reply here.
Back
Top