Compressor capacity question

Just a quick garage/shop related question. I'd like to get a sizeable compressor for the garage, and I'm considering a 60 or an 80 gallon capacity.

I'll be using it for air tools, a medium (24x30) blasting booth, and who knows what in the future. Any suggestions? I won't be running the tools/blaster/etc. at the same time, so would I need the extra size?

BTW, it'll be a vertical oil-lube 220V compressor. Thanks

 

I'm not sure how you USA guys rate a compressor in gallons. Gallons per minute delivery?, or is that the size of the air reservoir.

Whatever, but get the biggest air delivery you can manage, and you'll be covered for everything. I would like 20 or 30 cfm, but it'll never happen

Air reservoir size is not of much interest if you have big displacement

 

you need to compare the "DELIVERED" CFM[cu feet per minute] at different air pressures. 40psi and again at 175PSI.
the highestCFM rating at 175 is the best choice for sandblasting. which will require a constant 20-27CFM delivery at about 90-110 psi to work well......you can do with less but in an air compresor it will wear into less fast enough so TOO MUCH is what you need!

 

CFM (cubic feet per min.)is what matters. If you want to sand blast, your going to need close to 20 CFM. More is better. Size matters!
My compressor (single stage, 3 cyl, 18.5 CFM at 100 psi) Is barely enough air for my needs. It has a 60 gal tank, I'll be adding another tank as soon as I can. That will give you more reserve air. The pump will run longer, but not as often.

 

Chop,
With that advice in mind, the 8o gallon'er I saw this afternoon has a 17.5 SCFM at 100 psi. With the medium blasting booth, you think that may work well enough?

 

Figure the biggest you need then BUY BIGGER...I've got an 80 gallon tank, two-stage 18 cfm @ 100 psi...nice compressor but the blaster eats air...the die grinder eats air...I shoulda bought bigger! <font color="blue"> </font>

 

Youre shopping now,so keep shopping till you get the most of em all [gallons of tank] [and CFM's] at higher pressures -say 90 or greater......about any pump will do well at low pressures.