I been fighting with my 12 year old porter cable 80 gal. for the last couple weeks not able to work, and I think I need to bite the bullet and purchase a new one, I am looking for recommendations on a brand and or supplier. looking for something in the 20-26 cfm range single phase Thanks in advance
Air compressor in need of a new one, looking for suggested quality brands
- Thread starter SK13
- Start date
I had narrowed it down to 3 when I was looking. Champion, Quincy and Saylor- Beall. A 7.5hp unit should give you the CFM you’re looking for. They are U.S.A. made and have lower pump rpm’s.
Here’s a couple of quick examples:
www.tptools.com
www.tptools.com
I ended up with a Champion as I found a used one for sale locally and have been very happy with it.
Here’s a couple of quick examples:
Champion® Heavy-Duty 7.5HP 2-Stage 80-Gal Air Compressor
RV-Series - Long-Lasting Performance, Tremendous Value! At Champion®, air compressors are their only product - Made in the USA* for over 85 years! Whether for hobby or business, Champion® is the right choice for years of trouble-free service! Champion® Compressors will run air tools, paint...
Quincy 7.5HP 2-Stage 80-Gal Air Compressor
High-quality, long-lasting, dependable - a great choice for any shop! Designed and engineered for industrial applications with a pump rating of over 50,000 hours and 100% duty cycle. QT Pro Series deliver higher volumes of air while consuming less energy. QT 5, 7.5 & 10 HP models have a new...
I ended up with a Champion as I found a used one for sale locally and have been very happy with it.
Treeslayer
Mike
i put a new pump, motor and check valve and switch on my old tank for about 1/3 the cost of a whole new unit. i did have to shop around.
just depends i guess how fast you need it and how much your willing to fool with it.
just depends i guess how fast you need it and how much your willing to fool with it.
Adamizer
Promoted Users
I bought a Eaton polar 7.5 hp piston compressor 2 years ago and it has been a great unit. There is normally a wait time for them because they are built to order but I got mine 4 days after ordering because I opted for a scratch and dent unit ( I literally found 1 scratch on it) also saved $400 being a blemished model. Eaton compressor is based in Ohio and I’m in PA.
Also have a 5 year warranty.
Also have a 5 year warranty.
5hp 80 gal R series.
I can’t believe how much the prices increased on these.
Mines the vr5-8. I bought it new from our air compressor guy that maintained the shops compressor (just a guess) 20 years ago mabey?.. never a lick of problems ever.
I keep this attached to my compressor and watch it from time to time to make sure it's running it's best.
I keep this attached to my compressor and watch it from time to time to make sure it's running it's best.
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This is how I have mine set up. A timed auto drain for the tank is highly recommended also if you don't have one on it along with a "HIT" (hot or high inlet temp) air drier. My drier is rated at 35cfm over kill but that to me is a good thing.
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MJM
Promoted Users
......and here I thought I was pretty slick timing my 80 tank from empty to full. Timing very close to yours at 7 minutes 20 seconds. I should do those remain time test as you have. It never occurred to me too do that.
The 120-160 time is refered to as recovery time, start with a full tank then using a blow gun let the air out till it kicks on time it until it shuts off. My pressure switch is factory set to cut-in at 120psi and cut-out at 160psi. It's good to have those numbers and times to help with any issues that may arise and narrow down what the problem might be or catch it before it gets worse.
1A Rock
Promoted Users
I'm 1 minute 2 seconds, 130 to 170 lbs in a 120 gallon tank. Been that way since 2015.
Dam. That's fast. What compressor you using? A duplex
Thats a real good way to have it set up. I was thinking it could have been a 7.5hp with a 10hp pump. Champion has one of those and would have liked to have gotten that one but my electric service at the time couldn't handle the extra load the 7.5hp required. My compressor guy said if I needed extra air to just get another 5hp unit and wire it like a duplex to have it come on when the demand gets high enough that the other one can't keep up. Doing it like a duplex would also alternate between the 2 each time it cuts in. I just haven't had that happen so I never felt the need.
Chris_Hamilton
Trying to be the best me, I can be
I wish I would have spent the extra $700 or $800 bucks and gotten a Champion, Quincy, or Saylor-Beal when I replaced my compressor back in 2014. My IR 7.5 does fine but it's loud and noisy and I had to put it in the workarea with me. I did mount the intake outside through the wall but it's still loud.
Next time I'll know better.
Next time I'll know better.
7.5 hp single 230V single phase (or more correctly--2 phase) motors are notoriously inefficient and prone to overheating. Likely a 40-50amp input depending on what wire size and how long a run from a panel. Commodity air compressor set-ups are not going to have good 100% duty cycle motor ratings in other than 3 phase. Usually have problems sooner than later above 5HP on non-industrial applications in anything 230V single phase with temperature rise problems in warm climates.
Better to go the 3 phase route with a variable frequency drive (VFD) to run with 230V . Payback can about 5 years. For commercial users---The cost of your air-compressor up-front is immaterial to the cost to operate it in a business over its amortized lifetime. I'm starting to see more machine shops going to a dedicated air compressor for each of their large machining centers rather than a central air system with a larger rotary screw set up based on operating costs savings.
Better to go the 3 phase route with a variable frequency drive (VFD) to run with 230V . Payback can about 5 years. For commercial users---The cost of your air-compressor up-front is immaterial to the cost to operate it in a business over its amortized lifetime. I'm starting to see more machine shops going to a dedicated air compressor for each of their large machining centers rather than a central air system with a larger rotary screw set up based on operating costs savings.
Chris_Hamilton
Trying to be the best me, I can be
I bought one in 2000 for the Shop where I was starting a business, I was too young, and really not ready so I was forced to close it in 2004. The guy that was going to take over bought the compressor from me and that thing lasted for 15 years of HARD use. It was a 7.5 IR as well. Single phase. Current one in that Shop is another 7.5 IR single phase. Both have/were abused on a daily basis and were/have been dead nuts reliable. So I haven't seen what you are talking about although I have no doubt that what you say is true in many cases. I ended up working again in that Shop for 8 years and the compressor we had issues with was a rotary screw compressor, an IR as well. It would never go more than a few months without breaking down. Owner finally sold it and we went back to the IR 7.5 reciprocating one.