Oiless air compressor for milling machine

Hello people

Im looking for an oiless air compressor in order to provide air to milling machine

The compressor should cover approximately 120 litres per minute at a pressure of 6-8 bars.

As you understand the air should be clean and dry. A sufficient tank of 300-1000 litres .

The problem is that after a big research I've done I have realized that the compressors covering these needs are really expensive. So do you have any suggestions or solutions in order to make this more affordable or at least in a reasonable cost range.

Let me know your ideas about it

 

What is a reasonable cost range?

We have been using Air Techniques compressors. Clean and dry air is not a problem, but the compressor heads can't be rebuilt. When they crap out you have to replace the whole head. The price for a non repairable head is ridiculous. We had a head go out and started looking for heads that we could replace bearings on and tried Shulz heads. They work fine, but the design is flawed as we found out when one of the main bearings started to go. We ordered parts and opened the casing. The crank has a free end not supported at all. I'll try to find an exploded view of the motor. The whole motor is cheap enough to have an extra one around to swap out if the bearing goes and take the bad motor apart and replace the bearings so you have no real down time.

I think the next compressor I get will be some cheap rebuildable and add a few inline oil filters and a refrigerated dryer.
Interested to hear what others are using.

 

I think a reasonable cost range would be 2000-3000 euros and not 4000-6000 euros that I have seen for dental oil free air compressors.

But as you said I want to hear also opinions from many people here about this ............Im really curious.

I had also the idea to buy a oil compressors and put the best filters on it and hydrator in order to keep the overall cost low and of course to be able to have cheap parts for future for repairs........ but I dont know the exact quality of the output air

 

The Air Techniques compressor we are using for the mill is about $4500. That's a lot for something that can't be rebuilt. I haven't had to replace a head on this compressor yet. It is about 6 years old. The other Air Techniques compressor is about 8 years old and runs an entire dental office with 6 operatories and 3 hygiene rooms. We have swapped out the heads three times. Twice on one side and once on the other. This is the one we experimented with the Shulz heads on.

 

I have realised that most dental air compressors brands dont go more than 100 litres.............and even for these compressors they charge 4000-5000 euros. They have filters and air dryer though but I believe must a middle way to compensate between performance and price.

 

i would buy a 210 only 60 db maybe add additional tank and for 600-700 dollar a cool dryer and here in Europe tanks over 1oo liter volume must be inspected i think every 2 years thats why i have only 90 liters only once in a lifetime inspected.
Dont use these dry patron's they are crap had one compressor with it dry medicine quality air with special piston had to change every 1000 hours the piston seals and after 3 years he was dead.
http://www.smtmax.com/category.php?id=52

 

with cold dryer or dry cartrige ?

 

forget dry cartriges for a mill it works 3 month maybe than they are saturated , dry cooler or max a cartrige after a second tank that the water could condense in the second tank and the cartrige is not saturated so fast.

 

Hi Igor i dont know i took a look looks like a salt or other cartridge but i am not sure see link these are cool dryer they refrigirate the water and seperate. Ask them if theirs a material inside the cartridge that must be changed from time to time . On a mill it runs nearly all day long thats different from a surgery praxis . The pic below is my cartridge theres a salt inside the biggest shit i ever bought

http://silair.de/kaeltetrockner-dryer.html

 

oil free silent or the bigger one ( see link) but the bigger is 65 db thats 50 % louder add a second 50 lieter tank so it runs not so often and less moister 200 lieter should be enough for mill only. Kompressor is a electricity sucction so at less it runs as cheaper therefore 2 tanks so it runs 30 percent or so less so the bill is ....


https://www.implotex.de/silent-air-...ompressor-druckluftkompressor-implotex/a-666/