The Haas VF-4SS vertical machining center has a spindle motor with a maximum rating of 30 hp or 22.4 kw. The spindle has a maximum speed of 12,000 rpm and a maximum torque of 90 ft-lbf at 2,000 rpm.
For a 30 HP Spindle Motor on a VF-4SS CNC the required phase converter to use is a GP60NL - 60 HP Rotary Phase Converter from Phoenix Phase Converters.