belt grinder wheels

Willie71 said:
Probably because of where the power is. ?????
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This shouldn't really matter either as far as 1ph vs 3ph is concerned. You can find up to a 1.5hp VFD that will run off of 110VAC or 2hp to 3hp that will run off 220vac.
 
Don't think I said anything about variable speed. My bench is the only space I have for the grinder that is close to a wall plug. So I'm limited to 15 amps or less. Trying to do this on a budget I was thinking of trying to find a cheap used table saw. What rpm motor would be the best to use ? I know mine is 4500 rpm, maybe that's to much.
kuraki said:
What does your workbench location have to do with whether you want variable speed on your grinder or not?
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KodyL said:
Don't think I said anything about variable speed. My bench is the only space I have for the grinder that is close to a wall plug. So I'm limited to 15 amps or less. Trying to do this on a budget I was thinking of trying to find a cheap used table saw. What rpm motor would be the best to use ? I know mine is 4500 rpm, maybe that's to much.
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You said you couldn't run 3 phase due to your work bench location. 3 phase motors are powered by a vfd for variable speed. 1 phase in, 3 out.
You can run up to a 1.5 hp motor on 110VAC with a 15 amp breaker, no problem. It's going to likely cost a bit more, but it's worth it.

1.5hp AC motors (1 or 3 phase) will come in either 1725-1800 RPM, or somewhere around 3600 RPM. If you're going with a single speed set up, 3600 is way too fast IMO, at least for finish work. 1750 with a 3-4 step pulley is much more manageable.


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I have a 4" wheel mounted direct on the motor. I just tried relocating the .5 hp motor that I have and got it going but not that great. The Ironhorse motors that you mentioned sounds great. Who do you buy them from ?
knife to a gunfight said:
You said you couldn't run 3 phase due to your work bench location. 3 phase motors are powered by a vfd for variable speed. 1 phase in, 3 out.
You can run up to a 1.5 hp motor on 110VAC with a 15 amp breaker, no problem. It's going to likely cost a bit more, but it's worth it.

1.5hp AC motors (1 or 3 phase) will come in either 1725-1800 RPM, or somewhere around 3600 RPM. If you're going with a single speed set up, 3600 is way too fast IMO, at least for finish work. 1750 with a 3-4 step pulley is much more manageable.


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KodyL said:
I have a 4" wheel mounted direct on the motor. I just tried relocating the .5 hp motor that I have and got it going but not that great. The Ironhorse motors that you mentioned sounds great. Who do you buy them from ?
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The Iron Horse brand of motors come from AutomationDirect.com. As far as I can find, they seem to be the most reasonably priced 3 phase motors, brand new. You could probably find one of a different brand cheaper used, such as craigslist, or if you're lucky, on eBay.
 
Thanks, Ironhorse looks like a good deal, especially with free shipping. There is a shop I need to check out when I go to town on Thursday. Hopefully I'll have something figured out by the weekend.
knife to a gunfight said:
The Iron Horse brand of motors come from AutomationDirect.com. As far as I can find, they seem to be the most reasonably priced 3 phase motors, brand new. You could probably find one of a different brand cheaper used, such as craigslist, or if you're lucky, on eBay.
Click to expand...
 
Found out advertised hp means nothing. I picked up a used Canadian made 3/4 hp for $60. My 1/2 hp Chinese motor was 3.6 amps this New to me motor is 10 amps and 1750 rpm and looks like a torque monster compared to the Chinese model . Photos to follow when I get a chance.
 
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