Need some help with air grinder

[Pirox]

Hey guys,

What is the key to making an air grinder work at it's optimal performance??! I have a DeWalt 5 gallon compressor that has worked well for all my air needs to this point.

I've tried an air grinder with 5" sanding pad and it loses steam pretty quickly. I had a 1/4" air hose at first then hooked up a 3/8" and it was an improvement. Is the capacity of the air tank the most important part of the equation or the compressor's ability to push the air out?

Kent

[ptrautne]

Hey guys,

What is the key to making an air grinder work at it's optimal performance??! I have a DeWalt 5 gallon compressor that has worked well for all my air needs to this point.

I've tried an air grinder with 5" sanding pad and it loses steam pretty quickly. I had a 1/4" air hose at first then hooked up a 3/8" and it was an improvement. Is the capacity of the air tank the most important part of the equation or the compressor's ability to push the air out?

Kent

You need to look at the CFM. Using air grinders takes a lot of CFM requirements. The tool should say what they suggest and the DeWalt compressor is going to be no were close.

[Pirox]

Thanks, makes sense. I guess I will be looking for a new compressor. I'll assume bigger tanks are always better on stuff that requires a lot air. I'll check the CFM before making another purchase.

Kent


You need to look at the CFM. Using air grinders takes a lot of CFM requirements. The tool should say what they suggest and the DeWalt compressor is going to be no were close.

[ptrautne]

Thanks, makes sense. I guess I will be looking for a new compressor. I'll assume bigger tanks are always better on stuff that requires a lot air. I'll check the CFM before making another purchase.

Kent

You need a compressor that has mutiple cylinders or another way to increase the air-flow

[Cdshot10]

i can run an air grinder easily on my 6.5hp 33 gallon compressor at 90psi..

[rojodiablo]

Hey guys,

What is the key to making an air grinder work at it's optimal performance??! I have a DeWalt 5 gallon compressor that has worked well for all my air needs to this point.

I've tried an air grinder with 5" sanding pad and it loses steam pretty quickly. I had a 1/4" air hose at first then hooked up a 3/8" and it was an improvement. Is the capacity of the air tank the most important part of the equation or the compressor's ability to push the air out?

Kent
Minimum 15 gal tank with 3.5-5 hp motor. Grinders and sand blasters eat air rediculously fast. Best bet is the electric grinder. Instant on, less power loss under load, uses less power, less noise, and still will cut your ass up when the disk fractures at 6700rpm, vs 10,000!! :D

[Interex]

My 32 gallon, 5.5 HP runs grinders fine as long as you know how to use it.

[dnellans]

everyone that says their 30 gallong is "fine" for running air grinders and other really high CFM tools are kidding themselves. i currently get by with a 30gallon 150psi tank but for continuous use there is nothing besides capacity that will make using tools like this bearable. if you use a 75gal or bigger compressor with a high duty cycle you will realize that 30gals and most other home compressors are not big enough for these tools. they're great for most thing but continuous draw tools isn't one of them.

[Scootn2nature]

realize this is old post but........I put some aux tanks in line/ and-or in conjuction with
other tanks . this will allow you to run tool longer....and compressor won't work as hard....oh yeah

make sure to put one way valves where needed to avoid back pressure on the unit

[EMPIRE]

high volume tools will kill small air compressors that cant keep up. buy electric tools or get a bigger compressor. i have a mix of air and electric tools and most of my grinding tools are electric.