I was looking at Facebook marketplace and found a Quincy 325 for sale at a good price. Only rub is it has a 3PH motor on it. Anyone have a good source to get a quality motor for $500 or so?
I found this one:
https://compressor-source.com/produ...tor-184t-frame-1750-rpm-single-phase-weg-new# Look like a good one? My planned use is home use, so shouldn't live a hard life. I don't mind changing to a smaller pulley to get the RPMs down closer to 400 - don't need all the CFM and quieter is nicer.
WEG is a motor made in Brazil. The company literally digs that motor out of the ground. They mine the iron ore and copper, smelt it, cast the iron, make the wire. I haven't seen a new one recently, they originally didn't alloy steel for the shells, so the whole thing was cast and heavy. That motor would serve your purpose, I wouldn't run it at 400 rpm, the compressor is likely splash oiled and needs to run to self oil. As a general rule, 1200 rpm is nominal for a 5 HP compressor. At least 650 rpm. I'd keep the RPMS close to what they were. Put the compressor in a lean-to if you can if the noise bothers you. Also, running a smaller pulley gives less pulley surface area for the belt to grip. Slipping belts get hot, catch fire.
I have a WEG 3 phase on my lathe running on a VFD. I don't know about running a compressor on a VFD, but in general compressors have a large inrush (starting) current, so that needs to be taken into consideration. If you want to keep the 3 phase motor. Does the compressor come with a magnetic starter?? If so, that will be a 3 phase starter. It would be good to use one. It is possible to use that starter on single phase, I'd consult a motor shop about which heaters to use and how to configure it. Hope this helps.
The pressure switch, if there's no mag starter, will not be rated for the ampere draw of a single phase motor. So you'll at the least need to buy a 5 HP rated pressure switch or use the 3 phase switch with a mag starter.
I looked but didn't see a shipping cost, likely expensive cause it's heavy. Jus' sayin'.
