What compressor? HELP ---->

[Roospike]

Sup guys ,
Looking for a replacment compress or for the "home shop".

Miller 625 plasma
air tools
paint <very little now>
future sand blaster <maybe >

what compressor and why?

#1 http://www.mytscstore.com/detail.asp?pcID=1&paID=1010&sonID=469&page=1&productID=9181

#2 http://www.mytscstore.com/detail.asp?pcID=1&paID=1010&sonID=469&page=1&productID=1270

#3 http://www.mytscstore.com/detail.asp?pcID=1&paID=1010&sonID=469&page=1&productID=885

#1 and #2 kinda confusing ,

#1 is 135 max. PSI and 80 gal. ASME tank. 18.1 CFM @ 90 PSI. 100% continuous duty ( more CFM but less max PSI ) <single stage compressor><Extended design life - 5,000+ hrs.> $742.88

and/or

#2 is 175 max. PSI and 80 gal. ASME tank. 15.8 CFM @ 90 PSI. 100% continuous duty ( more max PSI but less CFM ) <two-stage compressor><Extended design life - 15,000+ hrs.> $999.99


Replacing a "LOUD almost dead" CRAPSman oilless 5 hp <yeah right>30 gallon 120 PSI that is fixen to be turned into a BBQ cooker.

or maybe this is all i'll ever need :
#4 http://www.mytscstore.com/detail.asp?pcID=1&paID=1010&sonID=469&page=1&productID=2495

[Skipper]

Go big whatever you do if you want to sandblast any at all. The one I bought from tsc Is the the one that you have listed as #1. I have a 40 lb sand blaster and with the 1/8 inch nozzle at 90 psi the compressor will run continuosely but the tank pressure holds steady around 100psi. I have no complaints about it other than its heavy as crap and its been sitting in my shop for about two years:rolleyes: . I have my lean-to built now and need to move it:eek: . Now the number three choice you have there is the man but at the time nor now do I have enough sandblasting going on to justify the extra 1000 bucks. I say #1 minimul if you ever want to sandblast any at all though. It took me awhile ( and a ****pot full of money) to get the grit size, nozzle size, and air presure set to get max performance from my compressor sandblaster combination but I am well pleased w/ it now.

[Ron in SC]

http://www.mytscstore.com/detail.asp?pcID=1&paID=1010&sonID=469&page=1&productID=9181
Low cfm for a 5 hp, maybe because it’s single stage, also motor looks rather small probably not an industrial motor and rpm is probably 3450.

http://www.mytscstore.com/detail.asp?pcID=1&paID=1010&sonID=469&page=1&productID=1270
Same as #1 except 2 stage.

http://www.mytscstore.com/detail.asp?pcID=1&paID=1010&sonID=469&page=1&productID=885
More of a heavy duty compressor, but I think a 7.5 hp motor is to big to be a single phase motor, to many windings, will get rather hot, and expensive to replace.

I have the same compressor as #1 except mine is 3 hp. Actually it's the one that you linked to at the bottom of your post. Not a heavy duty unit. It’s fine for air tools, except die grinder. Fine for painting with hvlp gun and adequate for regular gun on small projects. Don’t know about plasma cutter, as far as sandblasting forget it unless you get #3 or something similar.

I've decided on the compressor I purchase based on a several factors including cfm, horsepower, electric motor speed, and pump rpm. It will be shipped today so I should see it next week.

I decided not to get a 7.5 hp motor since it would have to be single phase and I felt based on my useage the motor would get very hot and not last as long as a 5 hp motor. The windings on a single phase 7.5 motor are very substantial and will most likely cause the motor to run very hot. Since I will only be using this compressor occassionaly for sandblasting and running a die grinder the 5 hp motor makes more sense for me.

I also wanted a cast iron compressor pump that ran at no more than 900 rpm again due to heat which can affect service life.


The stats on the unit I ordered are as follows:

two stage compressor, 5 hp singe phase electric Baldor motor running at about 1700 rpm, with a magnetic starter, tank size: 80, pump rpm: 845, DVLD CFM@175 psi, 17.3, and 18.8 cfm @125 psi

I should be able to sandblast with this unit using a 3/32" nozzle, and maybe an 1/8" nozzle as well. I found someone who has this unit and said he has used it to do open air sandblasting using one of the smaller pressure pots.

Read link below it has good information on air compressors.
http://www.garagejournal.com/forum/showthread.php?t=6405

I should also add I wanted a compressor that had American made pump, motor and tank.

[jamesdart]

i say forget #1, spent the extra 200 and buy the 2 stage.

[Roospike]

The problem with the 2 stage is its only 15.8 CFM @ 90 PSI vs 18.1 CFM @ 90 PSI single stage unit.

[Roospike]

Here is a compressor with the better T 30 V twin 2 stage pump but still it only CFM 14.8 at 175 PSI ................
So does this mean its a higher CFM at 90 psi sense it being shown at 175psi ?

( its only a 60 gallon tank vs the 80 g )

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ih=003&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=130058351085&rd=1&rd=1

Item number: 130058351085

[Hotfoot]

If you have a Tractor Supply Store near you, they may have that one in stock, and their prices are usually VERY good!:)

[jamesdart]

now were talking. go for the t30

[precisionworks]

You may want to eliminate #4 unless you're planning to buy a couple of them, which is not all bad. I use three just like that, which is an inexpensive way to get lots of CFM. Similar comments apply to #1.

Both the 5HP & the 7.5HP two stage models will give good service. Since they're able to fill the tank to about twice the pressure of the single stage, you'll have twice the run time before the pump kicks on.

#2 will draw about 25 amps (running) at 240v. #3 will draw almost 40 amps. Both would need a dedicated service with nothing else running on that circuit.

Nice choice of machines ... many buyers try to get the cheapest unit available & complain when it doesn't perform. Either the 5HP or the 7.5HP would be an excellent choice.

[skidsteer.ca]

I do some sandblasting and find a 27 cfm 2 stage 12.5 hp gas is still a little shy of air. As your nozzels wear and the hole increases it becomes harder to keep up. Blaster works at 80 psi but 100psi plus saves alot of sand. Last year we did a bobcat and twinned it to the 5hp 2 stage is the shop, which kept pressure in the 130 range.
For my own use just for the shop I'd consider nothing smaller then a real 5hp 2 stage, for die grinding, serious blowgun work, (with lots of air my blowgun doubles as a pressure washer) 1" impact. The cfm rating on most tools is only for a 50% duty cycle, so you can double it if you have alot of die grinding to do.
My .02
Ken

[precisionworks]

The cfm rating on most tools is only for a 50% duty cycle

Good point. Sometimes only a 25% duty cycle is used. The Ingersoll 2141, 3/4" drive impact is a great example. Average air comsumption 9.5 CFM if you run the tool for 15 seconds out of every minute. Full load comsumption is 40 CFM. http://www.irtools.com/IS/modelComp_full.asp?item=2879

An air compressor is like a bank account -- bigger is always better:D

[Farmerboy]

I vote for one of the two stage units, I don't think you ever be sorry if you get more than you need,

I built a compressor, used a used asme tank that had been thrown out do to a messed up compressor head, and put a two stage unit on it and a real 5 hp motor, It is quite and the tools just run better with adequate air pressure and volume, that is one of the better things i have done in the shop in the last 20 years,

[Roospike]

Alright , I think i have narrowed it down to one of these two air compressors ..............

Ingersoll Rand Type-30 Reciprocating Air Compressor — 7.5 HP, 230 Volt 1 Phase, Model# 2475N7.5

http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200318469_200318469

or

Eaton 7.5 HP, Single Phase, 80-Gallon Vertical Air Compressor
unsure of shipping cost on this unit yet.

http://www.eatoncompressor.com/catalog/item/504747/1710568.htm

[precisionworks]

Two excellent machines to choose from:D

Every Eaton owner on this board, the Miller board, Practical Machinist board, etc., loves their machine. One of my customers bought exactly the same compressor for his business (which runs 24x6). The first pump lasted two years & Eaton replaced at no charge. The second pump lasted two years & Eaton replaced at no charge. Now he's installing an Eaton rotary screw, which is the machine he should have purchased in the first place.

Call the owner & talk with him. Everyone says he'll bend over backwards to do business with you.

---------------------------------------------------------------

IR Type 30 ... can't say anything bad about that unit. Here's a quote from their website:

The Ingersoll Rand T30 has been the leader in its class since it was introduced in 1929. Whether this is measured by reliability, efficiency, rugged flexibility or maintainability, it has no equal.
Designed for heavy industrial applications, the two stage reciprocating air compressors provide the quality and performance that exceed customer requirements.

The Type 30 uses a cast iron pump which provides 15,000+ hours of service. Compare that to the pump on a Big Box compressor, typically rated for 5,000 hours service.

http://air.irco.com/uk/T30_Rationalised_22822993_eng.pdf

---------------------------------------------------------------

Tough choice. You'll be happy with either one.

[archer]

The Ingersol rand model you have listed is the one on my wish list.

[Roospike]

Any body know at what RPMs the IR Type-30 compressor run at ? I was thinking 1700

[Ron in SC]

Compressor rpm is probably 1000 or less the motor speed is likely 1700 rpm.

[RichT]

I'm a big fan of Quincy compressors, currently have their 5HP, 60gal, 220V single stage compressor (Model 1V41C60VC5). Good reputation, like the Eatons and Ingersols. Debated between single and two stage...ended up with single, adequate for my car restoration work. Keep an eye on operating RPM spec, lower the better.

Whatever you get, spend some time on designing a good air line plumbing system...nearly as impt as the compressor itself. Get some good moisture filters and run drain lines. There are some good notional designs on the web.
http://www.westerntool.com/content/wtool/images/250/Products/Q/QUN/QUN_1V41C60VC5.jpg

[Roospike]

Update :

Well i ended up picking up two of the Ingersoll Rand 7.5 hp compressors at a good price. I tell you what , them vertical tanks units are a bear to transport , a dock at the home shop would of been nice to unload but the neighbors bobcat got the job done.

Need to pull the old compressor out and upgrade the wire and breaker for the new one.
A few posted pics.

************************************************** ************************************************** ***
INGERSOLL RAND® 7.5 H.P. 230V 2-STAGE AIR COMPRESSOR
7.5 H.P.† Run (21.4 H.P.† Peak). 230V two-stage air compressor.
175 max. PSI and 80 gal. ASME tank. 25 CFM @ 90 PSI. 100% continuous duty all cast iron 2-stage pump.
230V single phase motor with mounted motor starter.
Finned intercooler.
Mounted discharge valve.
Extended design life - 17,000+ hrs.
Comes with 2-year industrial grade pump warranty, on-site service and all season synthetic lubricant included.

[realitycheck]

[QUOTE=precisionworks;250592]Two excellent machines to choose from:D

Every Eaton owner on this board, the Miller board, Practical Machinist board, etc., loves their machine. One of my customers bought exactly the same compressor for his business (which runs 24x6). The first pump lasted two years & Eaton replaced at no charge. The second pump lasted two years & Eaton replaced at no charge. Now he's installing an Eaton rotary screw, which is the machine he should have purchased in the first place.

Call the owner & talk with him. Everyone says he'll bend over backwards to do business with you.
QUOTE]

Hey precision works why you think those two pumps quit working for him? Reason im asking is im planning on getting the eaton compressor here soon and I dont want it shutting down on me. Its going to be for home garage use though.