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Gear driven power feed motor

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Dynahoe Dave

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Hi,
does anyone have the old gear driven power feed? It has a Master 1/8HP 203 / 230 V single phase motor.
Mine is drawing around 4 amps @ 240V running with no load, which seems really high for such a low power motor. Almost 1000Watts!
The starting winding gets a pulse initially, and drops to zero, so it's not stuck on. The starting cap also only has current during the spin up.
I have had no luck searching for anything related to the motor, even the frame number 5217 seems to be so old school nothing comes up.

It seems to run ok, but it does get pretty hot after a short while, - which I would expect with close to 1KW going into it...

The nameplate has a current rating, but it is damaged right near the number, so I am not certain what it is. It could be anything - X.7 amps.

Can anyone read their nameplate and or measure the current?
 

mksj

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If you calculate that an ideal motor is 750W/Hp, you come up with ~100W or 0.42A at 240VAC, given an efficiency for a single phase motor of around 60% you would end up with 0.7A. If you have a local motor shop, probably worth having them take a look at it.
 

Dynahoe Dave

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That makes sense. I'll have to remove it and look it over. I was trying to figure how to confirm my suspicion that something is way wrong, but just wasn't getting to the basic 750w/ hp thing.
 

Dynahoe Dave

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Oooh! It's possible the start and run windings are swapped . The wiring on this machine was pretty sketchy.
 

markba633csi

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Yeah, way too much current for a 1/8 hp motor- something is squanked
 

Dynahoe Dave

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So far , so weird.... Took the end off, nothing looks burned up or damaged. Bearings nice and free, no binding.
Run winding seems happy with much less than 240V The start winding is the start winding, they don't seem to have been swapped.
 

Dynahoe Dave

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Did a bunch more testing and experiments, it doesn't seem like I have the wiring wrong. It just draws way too much current. Bearings are good, and most of the testing today was with it removed from the gearbox, so there was absolutely no mechanical load on the motor.
For now, I wired it up with a transformer to drop the voltage to 180V. It draws around 2 amps that way, so won't go up in smoke... I'm thinking that it's going to be difficult to find a good one of these motors, since even H&W doesn't support them.
I'm sure I could get it rewound, but $. I also have seen aftermarket power feed drives...
 
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