I am in the process of buying a 4.2kw, water cooled, BT30, ATC spindle for my cnc router. What I am doing is rectifying a mistake I made when purchasing the machine. I definitely should have ordered it with an ATC spindle but I guess I was trying to keep costs down. Well enough about that. I have decided on a Jianken JGL-110/4.2R24-30 4.2kw spindle in 220v. The spindle is listed on their site as 380v but I contacted them and they said it is available in 220v. So tomorrow I am going to wire the money and we'll see how thing go. I'll post an update once I get it installed.