Hey...

What size compressor do you recommend for running pneumatic Impact Wrenches suitable for wrenching on the scoot?

I have owned compressors in the past to run nailers, etc. but not wrenches (all tools now in my ex-wife's garage...errr..."friend's" garage...but I digress). I have always been a manual hand tool worker (is that then, a hand job?...oh wait, sorry 'bout that...well, you know what I mean). ;^)

Will the 5 Gal Sears unit do the trick (125 max PSI; 3.7 SCFM @ 40 PSI, 2.4 SCFM @ 90 PSI; 120 volts)?

Thanks!

SG

 

Depends on what PSI the tools need to run.

 

Thanks, so I need to look into what basic tools to buy...I am not talking about full tear-downs by any means on the bike....but I am taking apart an old truck so it's about time I get the right stuff.

Thanks.

 

Why not look into buy a tool/compressor set. this way your assure of the proper specs. I would gather most compressors are sufficient enough to run most pneumatic tools. Max PSI of 125 should be good.

 

With most air tools it's not always the pressure required but the continuous volume. Some, like an impact wrench, are air hungry which is to say that they require a higher constant flow of air so you're not constantly waiting for the compressor to catch up. Your example compressor makes enough pressure but falls short in the constant volume department. It'll do the job but you will be waiting for it to refill the tank so you can pull the trigger again.

 

True words..I bought some cheap air tools one time at one of the discount tool stores and they used so much air the compresor would not stay up with them.

 

What coaster said. It would probably be fine for basic use. No die grinders, and ratchets take a high volume of air. Tank size is not really as critical as the CFM the pump is capable of flowing. Ingersoll makes a small tank that flows over 5 CFM and the compressor is rated for 100% duty cycles vs the Sears 50% rating. Having said that, I have a 12 gal Sears with the iron pump and it works fine for my needs.

 

IMO the 5gal is not big enough. What they've said above is true, the bigger the tool , the more air hungry they are (like impact wrenches). Bigger HP and larger capacity will enable you to run the tools longer and the compressor won't turn on as often. Are you wanting a portable or static? Either way, get as big as you can afford and have the space for.

Here's a good website for research. Happy reading.

http://www.aircompressorsdirect.com/recommends.php

 

Excellent. Thanks for all of that.

I'll go look for something that runs 3.5 - 4 CFM @ 90 PSI and go from there. Electric and stationary.

 

I have a 26 gallon Craftsman 150 PSI compressor. 120V and somewhat portable.
Works good for most tools.
Need to wait a few minutes about every 5 minutes with a Die grinder, cutoff tool or sander.
It won't keep up with a Sand blaster, a minute or so and then a 5 minute break.
I do have an old compressor with a 40 gallon tank that I use for extra capacity. It does take longer to catch up once it runs down.

One of these days I'll invest in a larger 240V unit for the shop.