boberjagel
Member
How big should the CFM be on a compressor for filling semi truck and farm tactor tire quickly and efficiently
- Thread starter boberjagel
- Start date
Janicholson
Well-known Member
12 to 18 CFM at 120psi would do the trick. The size of the tank will make a large difference as well. 50 to 60 gallon tanks will fill the tires rapidly even before the compressor starts. (assumes it is full to start with) Jim
Jim.ME
Well-known Member
- Location
- central ME
150 to 175 PSI is better for semi tires as most need 105 to 115 psi now. The top end fills quicker with higher pressure.
Geo-TH,In
Well-known Member
You may not be able to see that I put a brass ball valve on my air compressor so when I'm done using air, I shut off the ball valve and the power to the compressor.
It's probably not necessary I turn the power off because the air compressor doesn't leak air. Compressor turns off around 150 psi. That's where it remains, 150 psi.
I never have to fill tires, I just top off the air in tires.
Sometimes I top off the car or truck and compressor doesn't even come on.
It's probably not necessary I turn the power off because the air compressor doesn't leak air. Compressor turns off around 150 psi. That's where it remains, 150 psi.
I never have to fill tires, I just top off the air in tires.
Sometimes I top off the car or truck and compressor doesn't even come on.
coonie minnie
Well-known Member
It's hard to have too much CFM.
coonie minnie
Well-known Member
It's hard to have too much CFM. Be wary of compressors sold in chain stores if you are doing more than occaisonal use.
thehickdaddy
Member
i agree completely.
A load range E tire gets 80 psi, but many truck and trailer tires are 105 ot 125 psi now, and a 110 psi compressor struggles and takes forever to get a tire to 105.
best compressor is 150 to 175 psi. And my dad also wanted me to mention that even tasks such as blowing out baler radiators or combine screens at 150 psi works so much better then an 110 or 120 psi.
You can always ad a regulator to adjust down if you need to, but you cant have too much volume or pressure when you are trying to get that combine or harvester cleaned off or when getting that tire seated.
just my thoughts and observations
A load range E tire gets 80 psi, but many truck and trailer tires are 105 ot 125 psi now, and a 110 psi compressor struggles and takes forever to get a tire to 105.
best compressor is 150 to 175 psi. And my dad also wanted me to mention that even tasks such as blowing out baler radiators or combine screens at 150 psi works so much better then an 110 or 120 psi.
You can always ad a regulator to adjust down if you need to, but you cant have too much volume or pressure when you are trying to get that combine or harvester cleaned off or when getting that tire seated.
just my thoughts and observations
That is kind a vile statement, I would call Rural King a CHAIN store but they still carry several lines of compressors. Where one buys is not as important as what one buys. I have a 8 hp ingersoll that came from Rural King some 8 years ago and it gets worked and so far performance has peen perfect. Farm shop servicing multiple semis and tractors.
This doesn't answer your question,but in the tire store when we were busy doing truck or loader tires,we had a 10 hp 3 ph 120 gal tank. And when we were going hard we hooked up the 20 hp service truck compressor in line to try to keep up with the 1 inch impact. And yes you want a 2 stage compressor.(175 psi)
coonie minnie
Well-known Member
You are right, it wasn't fair. But there is a large variance in quality out there... it is definitely smart to shop wisely. There aren't many at my local farm and fleet store I'd take home though. And unfortunately, quality seems to suffer in a lot of brands.
I went shopping this week and found my local Quincy dealer had the 60 gallon two stage compressor for a couple hundred bucks cheaper than anyplace else local or online, and they are delivering it for free. I was amazed how competitive they were on price and had them in stock.
Geo-TH,In
Well-known Member
RK is a too chain store. That's where I buy all my G70 log chains.
Forget relying on brand names totally.
For most of my life I thought buying Whirlpool appliances was a good thing. NO more. Just an example of brand names.
60 years ago Black and Decker was the gold standard in tools.
Now it is a junk store tool brand.
Point is, you can't rely on a name.
Forget relying on brand names totally.
For most of my life I thought buying Whirlpool appliances was a good thing. NO more. Just an example of brand names.
60 years ago Black and Decker was the gold standard in tools.
Now it is a junk store tool brand.
Point is, you can't rely on a name.
High pressure yes, but cfm??,, based on how often you need to fill tires and use an impact tool. How many workers at the same time. If you fill a tire a couple of times a year, you might go smaller. If you're doing it 15 times a day, you really need to go big. I switched to a quincy when my ir 175 psi went bad and have never regretted it. Side note is that its much much quieter and a but faster as its a fully balance 4 cyl,, two opposed balanced primaries, and two opposed balanced secondaries. And usa made to boot. industrial life rating is about double over the IR which is mostly made in china now. form internuts..
The average size air compressor you need is a 4-5 CFM @90 PSI for a impact wrench. For instance, an impact wrench with a 1 drive will need a 10 CFM @90 PSI, a drive will need a 4 CFM @90 PSI, and will need a 3 CFM @90 PSI.
I find a 12.5 cfm compressor about right and find that static air line pressure of 125 lbs works best for the big impacts on tractor work. I got the qt54, a bit bigger but the price was too good to pass up. ymmv.
The average size air compressor you need is a 4-5 CFM @90 PSI for a impact wrench. For instance, an impact wrench with a 1 drive will need a 10 CFM @90 PSI, a drive will need a 4 CFM @90 PSI, and will need a 3 CFM @90 PSI.
I find a 12.5 cfm compressor about right and find that static air line pressure of 125 lbs works best for the big impacts on tractor work. I got the qt54, a bit bigger but the price was too good to pass up. ymmv.
caterpillar guy
Well-known Member
I've been looking for a long time and as cheap as I am I have not bought one yet. For semi tires 175 is about the minimum you want so you don't wind up with the tire not filled and the compressor not coming on. Also you will never have to much pressure or to much volume. I've been looking for similar to your demand and I'm looking at a Saylor-Beal with the unloading head so it can just run without shutting off during tire changing times and then can be switched back to regular pressure switch for End of job.Problem is I was quoted about 3 grand for that model with the unloading head on it. The unloading head would let it run like a compressor on a semi then just kick in and out without the motor starting and stopping. when done switch back to the pressure switch and let stop when full.
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