Re: Talk me out of it, guys!

Posted by NCWayne on April 17, 2017 at 22:36:42 from (71.30.77.14):

In Reply to: Talk me out of it, guys! posted by Lanse on April 16, 2017 at 17:52:07:

As someone who uses a compressor ALOT, you may have been told you were buying 'commercial' compressors at Lowes, but they lied to you.

I've seen IR's, Quincys, and others, run for years at a time without incident in a variety of applications. The main thing is they were large enough, or had enough CFM for the job at hand, without running them wide open all the time. I can't remember what brand Dad has on his service truck, but it has been out in the weather, run for hours at a time, run on 30 degree days and run on 100 degree days, and it's been going since he set up his truck in 1986. yes, 30 years with no actual issues with the compressor, even though the old Kohler engine was changed out for a Honda about 15 years ago.....and the Kohler now runs a log splitter.

That said, Dad had a 7.5HP, continuous run, compressor in his shop set to maintain about 125 psi. I've got a 5HP in mine set up to cut in at around 100 psi, and back out at 125 psi. Both have run for years handling everything from a sandblast cabinet, to a plasma being used for gouging, to painting, mist cooling while machining etc, etc, etc. . Other than doing the valves on Dad's once, neither has ever given a minutes trouble, and Dad's ran several days out of the week, 8 plus hours a day, for over 20 years, and mine's been going strong for close to 15 years now...................Funny thing, both compressors were already well used when we both bought them.

Like I originally said, you need one with enough CFM to handle what your doing without over working it. Below is a list of the average air consumption for common air tools, as well as for different size nozzles when used for sand blasting. As the one links shows, air tools are rated with a 15 second run time, so go 4 times what's listed for the CFM actually required, especially for continuous run tools. This can be somewhat overcome with a large enough air tank, but as the old saying in the car industry goes, there is still 'no replacement for displacement'.

Ultimately, don't be afraid to find yourself an older, used compressor. With some TLC, and a little routine maintenance, the older ones will still be running 20 years from now.

• tool requirements

• sand blasting requirements

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