Baldor 110 volt, 3 phase?

[FMC1959]

Just got this 8" Baldor for $100, was happy as heck till I saw it is 110volt 3 phase. There is no plug, it was hard wired, do I just wire it with with a NEMA 15 and let her rip or do I need something special due to it being 3 phase?

If there are any issues running the 3 phase, the guy also has a 10" Robbins & Myers I can exchange for an extra $50, anyone familiar with these?

The Baldor is already heavy and a brute, the 10 is humungus and wheels would be pricey, so keeping the Baldor would be my first choice.

 

[Bobcat753]

No you are wrong on the voltage. It is 575V 3-Phase. The only way to run it is with a VFD.

 

[Doug Arthurs]

x2 it is 575 3 phase. Not sure where you got the 110v part.

 

[DocsMachine]

Sorry, that's 575 volt 3-phase. There's (almost) no such thing as "110v 3-phase".

The only way you'd be able to run that is with... 575 volt 3-phase power. You can, theoretically, run a VFD through a step-up transformer to power it, but that means you'd have to buy a VFD and transformer.

If the R&M is single-phase, or 220V 3-phase, that would be by far your better choice.

Doc.

 

[tool_scrounge]

Err... That is 575V 3 phase if I am reading the label correctly. Al a minimum you would need 3 phase power (utility, RPC, or VFD - use google if these acronyms do not make sense) and possibly a 3 phase step up transformer to get to 575V. Plugging it into 110V 1 phase will not work.

 

[exmaxima1]

Trade and pay $50 for the Robbins & Meyers option. They make great motors, so I'd imagine their grinders would be excellent. Way cheaper than adding a transformer and VFD

 

[FMC1959]

****, I never noticed the 575 I only saw it was 3 ph.

This is the plate on the Robbins, if I see it correct, I can wire it for 110 or 220?

 

[md21722]

****, I never noticed the 575 I only saw it was 3 ph.

This is the plate on the Robbins, if I see it correct, I can wire it for 110 or 220?

Yes its single phase & can be wired as either 115V or 230V. This will be much easier than trying to run the 575V Baldor.

 

[FMC1959]

Yes its single phase & can be wired as either 115V or 230V. This will be much easier than trying to run the 575V Baldor.

Thanks

 

[tombell572]

If you've got a 220v circuit, use that-will half the amp draw.

Tom B.

 

[DHCrocks]

575v-3ph damn that is serious grinder.

 

[oldtools]

575v-3ph damn that is serious grinder.

Not in term of power. It draw just a little more power than the Robin (1.1 vs 1). The higher voltage mean it draw less current. The 3 phase make it smoother than the Robin single phase.

 

[exmaxima1]

Not in term of power. It draw just a little more power than the Robin (1.1 vs 1). The higher voltage mean it draw less current. The 3 phase make it smoother than the Robin single phase.

Not sure what you're saying. The Baldor draws 1.1 amps at 575 (about 650 watts?), vs 13 amps at 120 (1500 watts?).

 

[exmaxima1]

I think it is noteworthy that the surface speed on both grinders is less than that of a typical 6-inch grinder, so they are inefficient at grinding most ferrous metals. The R&M grinder is more powerful and has more speed.

 

[oldtools]

Not sure what you're saying. The Baldor draws 1.1 amps at 575 (about 650 watts?), vs 13 amps at 120 (1500 watts?).

You are correct. I look at the wrong section of the label. I saw 1.1 and though that was the power. The power is actually 1.5. Regardless, for a given power, the higher the voltage, the lower the current draw.

 

[FMC1959]

I got this from a scrap collector, he got these from a tech school. When I saw his ad, I called him and he said he had two 120v, the rest were 220v...I never looked at the 575 voltage on the plate....my [super] bad.

I'll go back tomorrow and probably get the 10". Just looking around and anything for a 10 is less choice and quite expensive.

This 8 must be about 120 lbs, I tried moving the 10 and it must be 150+ lbs. I don't find many deals in my area, wondering if the 10 is just too much. It definitely cannot go on the bench I originally planned. I will definitely need to put it on a pedestal, and one that I can move around.

Maybe dumb to ask, but is keeping the Baldor, which also big but could work out on my bench, and looking for a vfd and transformer viable ($150 or less)?

i have seen new grinders like 8" Dewalt, Sunnex, and Jet, they aren't even close to this Baldor in size. This Baldor makes them look like a 5 or 6 grinder. The 10 is even more of a monster, it might be sacrilegious to say, it might be too big for my shop!

 

[exmaxima1]

Maybe dumb to ask, but is keeping the Baldor, which also big but could work out on my bench, and looking for a vfd and transformer viable ($150 or less)?

I cannot imagine you could find them for $150. The VFD is easily over $100, while a 3P transformer with the taps you need could be twice that amount. I would first look for the transformer and let that make the decision. That said, a VFD would be useful to get the rpm to around 3000 to make that 8-inch wheel more practical for grinding steel.

 

[md21722]

It is possible to buy low HP VFD's that take 120V single phase and output 230V three phase for not a lot of money. The problem with this Baldor grinder is that its a 575V motor. You would somehow need to step up from 120-240V single phase to 600V to and then get a 575V VFD. 600V is not really something a homeowner should be messing around with unless they are pretty knowledgable. Once you get up to 480V and higher the volts start looking for you.

 

[FMC1959]

I went back today to return the Baldor and check out the 10" Robbins. I originally went to get the one that is all green, because he had said this one and the Baldor were his only 120v.

Because he knows less about electricity than I do, I checked the 3 blue and yellow one, all 3 were Robbins and were 115/230v rather than just 240 as he had told me. Because these had a stand and would give it to me for the same $50 extra ($150 total), I went with the one on the far left in the pic with 3 (pic 1&2 are at his place, the others in my garage).

Heavy as heck, I put it on the scale and it comes in at 236 lbs. Most of it is the grinder, the stand is maybe 25-30 lbs at best.

Picked up 12 feet of 12 gauge stranded wire and a NEMA 15 plug on the way home. Tomorrow I will see about changing the wiring. I am not sure the exact procedure but I will start by opening it up, could have a wiring diagram on the inside of the plate. If not and I am not sure how to proceed, I will be back with pictures asking for assistance

 

[FMC1959]

I forgot the pic with a can of Pepsi

The grinding wheels are pretty used up, about 8 1/4", but will do for now.

 

[pstemari]

I forgot the pic with a can of Pepsi

Gad, that's a monster of a bench grinder.

Sent from my Nexus 6 using Tapatalk

 

[oldtools]

That is a good deal for $150.

 

[Thumper68]

I will be the first to say it. "You ****"

Congrats on the grinder.

 

[exmaxima1]

All I can say is WOW......

And that the maker of that grinder is actually Ford-Smith, while the motor is Robbins & Meyers. Similar to finding a Baldor motor on a Wilton belt grinder. The engineering features in that grinder are awesome, from the massive rests to the machined arbors. Major suckage.

 

[bberger]

Not to make this a for sale message but I have one that works but needs shields that I will sell for 50.00

 

[JohnK007]

Welcome to the 10" grinder club. (Mine's a Jet) You shouldn't have any problems sharpening your lawn mower blade with that beast! 10 inch wheels are a little harder to find but not impossible by any means. You won't find them in the big box stores that's for sure. eBay turned out to be a good source for me when I was hunting for new wheels.

You got a great grinder at a superb price! Enjoy!

 

[FMC1959]

Thanks everyone for the comments. I just need to get the wiring setup for 120v and then life is beautiful.

 

[FMC1959]

Having wiring issues, I started a new thread here
http://www.garagejournal.com/forum/showthread.php?p=6154316#post6154316

 

[zkling]

Interesting for a grinder to have open cooling slots like that on the motor. I'd offer $40 tops on the baldor if the wheels were good and he could proved it runs. He is going to have a VERY hard time selling 575v grinders. Most companies don't even want to mess with them anymore as they are trying to keep 460/480 their max voltage. Most home owners/small shops that could use the 575v grinder, know the market is non almost non-existent for those machines.