Team Camaro Tech banner

Big enough air compressor

1 reading
8.6K views 5 replies 4 participants last post by  stevea  
#1 ·
I am looking at buying a large sandblasting cabinet and a compressor that puts out 19 CFM's. Do you think this is large enough to run a sandblaster and a cabinet (not at the same time)?
 
#2 ·
Yes that will be fine, For the pressure blaster it will still be good to use a tip with 3/32 nozzle and the cabinet will work best with a 1/4" (Medium). Get your self a good water seperator system and run 1/2 Id hose to the pressure pot, 3/8 ID will be fine from the cabinet to your pipe system if less then 10 feet (optimal) but not more then 25 feet.
 
#3 ·
Sounds like plenty of air, but before you buy the compressor, look and see if it has a duty cycle, I'm on my third compressor in the last 14 years, I have been buying those $800.00 ones, two stage 220 volt, I never realized they had a duty cycle until I read all the paper work on this last one.

I just went out and looked at mine.

It's a porter cable, it runs a 100 lb pressurized sand blaster, it will keep up with that, also I run eastwoods largest bead blast cabinet, and it will keep up with that also, but not both of them at the same time.

It puts out 175 psi

17.3 scfm @ 100 psi

7 hp peak 6 hp running

80 gallon tank

Anyway they were made by sanborn blackmax porter cable etc. all of the pumps are the same, I have changed the oil with the right compressor oil, and more frequently then the manufactuer called for. Kept the air filter super clean, but the duty cycle is the key, I wouldn't run them over a half hour, with out waiting a half hour before going again.

Motors stay good, but the pumps will start blowing oil, so you need to check your filter drains everyday, if you think you feel a little oil on your fingers when you drain the filters then call a halt before you load up all your lines with oil.

I call them disposible compressors, but I never watched the duty cycle, so maybe this one will last a little longer.

Also, I'm just a hobbist, so I don't use them as much as a regular shop, although I use it quite a bit.

Hope some of this helps you out.

Rob
 
#4 ·
Thanks for the info.

I'm looking at two compressors, one is a Snap-On that is a 6 hp with a 80 gallon tank. I'm not sure about the cfm's, but the dealer said it puts out 17 cfm. The model # is BRA618V if anyone can give me more details on it.

The other is just advertised tonight on Craigs list. It is a 5hp with a three piston pump that puts out 19 cfm. I hope to get more info in the morning.
 
#5 ·
The CFM's are the key. And not just any CFM number, you need the CFM numbers at 90 or 100psi. A lot of compressor say 17 or 19 cfm's, but this is at 40 or 60 psi. In order to keep up with the blasters, cabinets and some HVLP paint guns you need the higher cfm's at the higher psi. Also 80 an 60 gallon tank is better then 60 gallons.