Hi there, I recently got a Chinese CNC with HSD ES930 4.5Kw ATC spindle and I need to purchase an air compressor for it. The manufactured recommended a 7.5kw Screw air compressor with pressure vessel and a Air Dryer checked with my local supplier and something like that would be rather expensive and bulky.

Machine is not going to run 24/7 most probably two days a week for half a day each, HSD recommends 6-7 bar for the tool changer and dry air. I am wondering which type of air compressor would fit the basic requirements without breaking the bank or unnecessary power requirement. What about the air dryer? Any positive experiences with simpler solutions?

Any advice would be really helpful, many thanks!