Mysterious Motor - Who Made It?

Got a picture of the name plate or specs tag?

Given the external appearances its a TEFC type with a standard frame style which could mean it was made by any one of about 20+ companies or sub contracted off brand names.

My guess would be its a GE, Wagner, Westinghouse, Magnetek, Leeson, Doerr, or Lincoln or it is a off brand name possibly based on one of their older standard frame designs.

Does the fan shroud or fan have a P/N you could trace?

I'm with tcmtech, there's not much to go on. The motor frame may have a P/N, but who knows?

I just went and inspected it again and the only other thing I could come up with is a logo... It is a backwards R with a U connected to the back of the R. I hope that makes sense to someone.. Let me know and thanks again..

Not much help. It's a Underwriters Lab mark.

UL Recognized Component Mark

The reversed RU is the UL logo for a recognized (but not listed) component.

This is a shot in the dark, but I seem to recall Siemens-Allis making motors with this large but thin style of junction box.

If the windings have continuity and Megger^® well, the motor should be good. It may be a bit of a guess as to the correct voltage, unless you already know that from the system the motor came from.

The nameplate on the junction box most likely has the information you require, so the question should be, how to read the nameplate? You could try putting a very thin piece off tissue paper over the plate and very gently rub this with a child's crayon- this might bring the motor number out sufficiently to decipher it. From that, you would be able to trace the manufacturer...There are other ways to read obscured tags as well, but the cost goes up with the age of the tag...

thanks guys... back to the motor tomorrow with a new update.. cu then

Is it possible to measure

1) the diameter of the shaft

2) the height of the shaft, this means the distance from the middle of the shaft to the surface the motor is placed on (first remove the two steel plate mounting supports)

3) the distance of the four mounting holes in the motors feets. ( parallel with the shaft and perpendicular to the shaft)

4) the speed the motor or the application is turning

Actually, the dimensions will only identify if this is a standard or non-standard frame size...most manufacturers will build motors to standard frame sizes (except the Chinese). The color, if it is original, may give a clue- motor manufacturers tend to prefer a specific color for their motors. To determine if this is the original motor color, try popping the fan shroud off and look for signs of overspray, or different coloring...

ric; looks like a single phase 120/240 volt with a very small power cord. call surge. pc

I notice that the v-belt pulley is secured to the shaft with a flanged taper bushing, so the motor would not be much older than some 30-40 years max. Probably less. Also, try shining a ultra-violet light onto the faded name plate. Most amazing things often show up in this light.

Although I can not assist with identification I do recall having done machine work to these type casings and to the shafting in effect updating the sheave attachments.

An old electrican once asked me what was the most important part of a motor.

"Bearings?Winding?Rotor?" I said.

No he replied.The data plate.With tha tinfo you can get an exact replacement if needed.

Sometimes a little oil on the name plate, and viewing at various angles will allow the faded text to be read.I have done this successfully on old tractor data plates, most recently with a 1948 Ferguson TE-20.

Wipe most of the oil off of the plate, leaving just a thin film.

If you can lay hands on an old military flashlight, the kind with the right angle head, they have a polarizing output lens in the bottom end. Also red lens.Try these lenses in a dark room.

May work for you.

Do you have any electric motor rebuilders in your area? In Canton/Louisville, OH, we have the Hannon Electric Co. If you have such, perhaps their experience will help.

Reading old nameplates: Several years ago I put in SPAAMFAA's Silver Trumpet a method that was suggested for reading debossed lettering on radio chassis. The technique should work for other stuff too. Coat the label with white out or typewriter correction fluid. When it dries, rub it off. Hopefully it will remain in any depressions and you will be able to read them.

The fan shroud design is pretty standard for an old motor. Sometimes the companies would place their logo inside the small circle at the center. My guess would be an old U.S. motors design by the casings, but could be anyones. Match the HP, voltage and phases. Mount and style along with RPMs. With new motors it will probably be more efficient and have lower AMP ratings. Should be much prettier too!

I have nothing to base this on, except intuition, but when I first looked at the fan shroud, U.S. Motors popped into my mind, too. The color doesn't look like any standard motor color I've see.

The color of this motor is likely from the OEM.Knowing the brand/model/equipment numbers this came from could be a big help.

This looks to be an unusual configuration in that the starting componants look to be housed/attached directly to the motor with the control circuit simply plugged in (?).

For old name plates I have good results cleaning the plate (just wiping w/ a clean rag) then smearing it all over with a Sharpie pen followed by another wipe down.

This does have a 'Doerr' feel about it though.

Interestingly awaiting an update.

AB-1 out.

I went out and got all of the infor off of the spec plate.. and some of the requested dimensions.. as follows.. thanks again for the assistance..

LR6153 10 1725

6K885E 215T 1 230 43.0

60 1.15 F H

MAN

G743A/G94F TMO

6208 6205

GOOD LUCK! EVERYTIME I EDIT IT TAKES ALL OF THE SPACES OUT....

The LR6153 number appears to be a CSA certification number.

"6K885E" may be (MAY be) a Dayton motor model number...

I'm wondering if this is actually a 10 HP motor....

1725 RPM

215 frame

1 = ??

230 V

43.0 A (??--seems high)

60 Hz

1.15 SF (service factor)

Normally a 230 V, 10 HP, 3 Ph motor should be about 28 FLA. That's why I wonder about the 43.0 (if it's supposed to be amps in the first place).

Now for a weird idea: Is the junction box just a junction box? Or could this be an unusually large single-phase motor with a capacitor in the box? If so, that might explain the 43.0 A and the 1 between the 10 and the 1725. I've never seen such an animal, but once upon a time there might have been a rural dairy where 3-phase was not available.

For your sake, I hope this is wrong, because you may have trouble selling such a rare beast, even though it may be a perfectly good motor!

It's a "high torque" motor, translate: high slip. The current version is still 40A FLC

The current version still has that big ass connection box.

The links for Grainger often default as a time out. If so, do an internal search at their website for part # 1TMV6

Interesting game of leapfrog here. I thought my guess about single-phase might just be a wild idea. Your post hadn't shown up yet, and when I looked again, I was chagrined to sound like an echo chamber! You beat me to it by 4 minutes. [Darn--but obvious GA anyway.] I was sorta surprised when my guess turned out! I still don't know if there is a capacitor in that oversized box. I hope we hear from Ric.

There are four capacitors in that junction box. And after checking with my brother in law he said that in the pile out there is a magnetic switch and a fairly large disconnect that goes with it.. It is in fact single phase as most farms do not have three phase.. I really appreciate everyone's assistance it is great to know that some people actually care out there..

Legitimate questions such as yours are a welcome diversion from the typical "what's a transmitter" and do my job/homework for me questions that often come along.

Don't be a stranger.

U must be a pilot also from the statement about the twin engines. My father was a WW2 pilot and he had me started when I was 10 years old. Again thanks for the assistance..

Bingo!!! It is a Dayton Motor the numbers matched up. Thanks everyone for the help and I look forward to the next time...