A heavy duty 180° hydraulic rack & pinion driven indexing pallet changer, fitted with dual pallet carrier stations and aligned to an NC Rotary Table. Work table is rotated by a dual lead worm gear dirven via a servo motor and fitted with auxilary shot pins for pallet registration and stability. Heavy duty table clamping ensures rigidity and the accommodation of high machining loads. Self-Contained Exchanger, Rotary Table and Pallets "matched" for easy installation