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Old 09-08-2019, 11:02 PM   #1
JoeKan
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Will this AC be enough?

My air compressor is a 5 hp, 25 gallon. It is 120 or can be 240. It has a label on it that says 9.1 SCFM @ 40 PSI. Also 7.1 SCFM @ 90 PSI. It's a sears craftsman.
Can I use a spray gun with this compressor?
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Joe
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Old 09-09-2019, 12:53 AM   #2
MP&C
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Re: Will this AC be enough?

what is the air consumption of your spray gun? That's where we need to start.
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Old 09-09-2019, 02:32 PM   #3
oem4me
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Re: Will this AC be enough?

Should be enough for a siphon cup gun, and more than adequate if you use a gravity feed HVLP type gun.
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Old 09-11-2019, 10:33 PM   #4
BIGglaSS
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Re: Will this AC be enough?

Nope. You might get one coat on a fender. That compressor is only about 2 hp. Typical hardware store 5 hp compressors are not true 5 hp. For autobody work you need 60 gallon, 15 cfm MINIMUM.
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Old 09-11-2019, 10:48 PM   #5
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Re: Will this AC be enough?

Here is an example of a "true" 5 hp type compressor.
https://www.pacificaircompressors.co...eller-19-1cfm/
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Old 09-12-2019, 01:16 AM   #6
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Re: Will this AC be enough?

Quote:
Originally Posted by BIGglaSS View Post
Nope. You might get one coat on a fender. That compressor is only about 2 hp. Typical hardware store 5 hp compressors are not true 5 hp. For autobody work you need 60 gallon, 15 cfm MINIMUM.
True that labeled HP ratings are meaningless. What isn't meaningless is the CFM rating, if accurate. Spraying paint and using air body tools is not the same.
I have and old compressor much like the typical Craftsman, rated at 3hp / 8.6 SCFM @40 lbs, and I've never been starved for air while squirting paint. Different story using Chinese inline body sanders though. Sometimes I gotta wait for the tank to fill with those.
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