Re: Is the 12z good for CNC conversion? Concerned about low rpm tapping/high rpm mill
The gear heads are not real great at 5000 RPM. I have run the IH mill for years and a 1/2 13 tap is easy. For high speed a belt drive and AC spindle bearings are best.
I dont know how well people have done with the stock gears and spindle bearings at 5K. The stock speed is 1800 with a "standard" 1850 RPM motor. You can change to a 3600 RPM and a VFD and get 5K and I plan on doing that soon to a gear head PM-940m but I'm not planing on running 5K all day long but more like 3K.
youtube videos of the G0704 under the name arizonavideo99