The Haas VF-11/50 CNC Vertical Machining Center has a 30 horsepower spindle motor with a maximum speed of 7,500 RPM and a maximum torque of 450 foot-pounds (ft-lb) at 500 RPM. 

For a 30 HP Spindle Motor on a VF-11/50 CNC the required phase converter to use is a GP60NL - 60 HP Rotary Phase Converter from Phoenix Phase Converters.