Need new 3 phase compressor

[Smittybert]

Well I can’t seem to find a 208 3phase 7.5hp or would possibly take a 5hp compressor anywhere in stock. Anyone have any leads?

 

[banditbigdog]

Champion 7.5 HP Air Compressor 23 CFM, 175 PSI Two-Stage, 60-Gallon Vertical Air Tank, 208-Volt, 3-Phase | VR7F-6

 

[BarrelRoll]

Well I can’t seem to find a 208 3phase 7.5hp or would possibly take a 5hp compressor anywhere in stock. Anyone have any leads?

Location? Anywhere near Denver, CO?

 

[dr_clyde]

More information would be helpful.

Budget? CFM? PSI? Brand preferences? Screw or piston? Receiver size?

 

[930dreamer]

$500 Yukon, OK. NOT MINE
$700 San Angelo, TX

 

[Smittybert]

Sorry, Youngstown OH
Would like new. Would like 20 CFM
Champion is built to order Saying August - October
Polar air is saying July sometime
Was hoping around $3-4k
125psi min would like Built In USA
Piston type only gets used 2-3 hours a day 4 days a week

 

[stonesfan68]

From experience I can tell you that 200/3/60 is an unusual voltage for an air compressor distributor to keep in stock. I don't know how expensive a VFD is at that size but that would allow you to operate a 230V machine at the lower voltage and give you some other benefits as well. What about a buck-boost transformer?

Whatever you decide to do make it quick and pay for it now prior to the inevitable price increase.

 

[dr_clyde]

From experience I can tell you that 200/3/60 is an unusual voltage for an air compressor distributor to keep in stock. I don't know how expensive a VFD is at that size but that would allow you to operate a 230V machine at the lower voltage and give you some other benefits as well. What about a buck-boost transformer?

Whatever you decide to do make it quick and pay for it now prior to the inevitable price increase.

208v motors run just fine on 240v and vice versa. In fact, most motors just say 208/240v on the windings. Not worth running a buck boost for something as simple as a motor.

 

[dr_clyde]

Sorry, Youngstown OH
Would like new. Would like 20 CFM
Champion is built to order Saying August - October
Polar air is saying July sometime
Was hoping around $3-4k
125psi min would like Built In USA
Piston type only gets used 2-3 hours a day 4 days a week

I would call your nearest air service company and see what they can do, most of them have something on the floor they can get you in a jam.

Built in USA is a bit of a challenge, but I would implore you to call more than Champion and Polar Air. Look at Curtis, Ingersoll Rand, Quincy, Gardner-Denver and Saylor Beal. Someone has to have something.

 

[dr_clyde]

I put your criteria in McMaster, they have one in stock, delivers thursday. Not sure of brand, but it has what you're asking for.

 

[BarrelRoll]

Sorry, Youngstown OH

Bummer, I have a good source in Colorado.

Have you tried calling any of your local compressor service companies to see what they had in stock? When I worked for a compressor shop we would rebuild and sell IR piston machines and usually had a couple in stock. He also had some rental piston and rotary screw machines he would send out till the machine that was ordered got in.

 

[Smittybert]

I put your criteria in McMaster, they have one in stock, delivers thursday. Not sure of brand, but it has what you're asking for.

Crazy as I did this earlier and now, it says 10 weeks now(208), for a 230 they do have them in stock. I was told that they would not be okay at 208V from the manufacturer (seem some motors are 208-230 and some not) and would have to get a booster which is something I rather not do since they do make 208V compressors.

I agree with buying now instead of later, Some said June 1st in a price increase.

I called some local companies not much in stock now, I found single phase but then I will need to pull power from a different service panel etc. (we do have 208 3phase and 120/240 single phase in the building/ separate meters)

Worse case I steal the big air compressor from the farm till one comes in.

I have a lead on a used compressor that might work also (till new one comes in) 200-230 3phase

 

[matt_i]

As mentioned, Mcmaster carr, grainger, air compressors direct.com all have various things in stock.

240/480 machines are very easy to cross from "high voltage" to "low voltage" and the 208/240 equivalence is basically a given with anything new.

 

[dr_clyde]

I’ve never seen a simple 240 motor that couldn’t be run on 208. It’ll just pull a few more amps.

CNCs and things with computers and servo drives are much more sensitive to voltage, but an air compressor you should be able to run a 240v motor on 208v power.

 

[American Locomotive]

Most American-Market 3-phase industrial motors are rated for 208-230/460v, but there are some 230/460 only motors (mainly cheaper ones). A lot of European and Japanese motors are also only rated for 230v/460v. I would not run a 230v-only motor on 208, it will likely run too hot, especially in an air compressor application that will see a sustained high load when being used hard (such as blasting).

 

[cannuck]

Another vote to simply go with 240V 3ph motor. Does not sound as if you are going to do high duty cycle use

 

[stonesfan68]

Most 230/460 motors are rated for the nameplate voltage +/- 10%.

230 x 0.9 = 207
240 x 0.9 = 216

So depending on how "strong" the incoming voltage is the motor might work. The trick is making sure that the voltage stays high enough during the in-rush current to not blow the fuse or damage the motor windings.

The other issue is the motor starter which may or may not have enough adjustment to account for the higher amp requirements at the reduced voltage.

 

[LXCam]

Have you tried Zoro (Grainger).

 

[G-ManBart]

I've had a number of compressors in the past few years. I'm sticking with Saylor-Beall at this point! Made in Michigan and I like being able to call and get a person on the phone in a few minutes. My first S-B was quite old and the tech guy e-mailed me everything they had on it...thought that was pretty nice. I replaced that one with a minty used S-B I stumbled on at a small online auction few people know about. I'd see if they can handle the motor/electrical requirement...really shouldn't be all that hard for any big company really.

 

[Smittybert]

Thanks, I was about to find a market place compress and get it going with a little work. So, talking to everyone I might have been about to make a 240v work and been find but might run hotter and might not live as long. I found this gem for $500 bought new belts, bolts and fitting and will give it a try till I order a new one.

 

[csp]

Bummer, I have a good source in Colorado.

I could possibly use that source if you don't mind sharing.

 

[BarrelRoll]

I could possibly use that source if you don't mind sharing.

Golden Hydraulics in Wheat Ridge. Most of the stuff in stock in 3 phase/ industrial stuff. It's been 5 years since I've worked there so I have no clue what's currently in stock.