The Haas VF-6 Vertical Machining Center has a 20 horsepower (HP) high torque spindle motor with a spindle speed of 7,500 revolutions per minute (RPM) and a spindle torque of 450 ft./lbs.
For a 20 HP Spindle Motor on a VF-6 the required phase converter to use is a GP40NL - 40 HP Rotary Phase Converter from Phoenix Phase Converters.