The HITACHI SEIKI HG-400III is a CNC horizontal machining center designed for precision and efficiency in metalworking operations. It features a 22-inch X-axis travel, 22.8 inches on the Y-axis, and 20 inches on the Z-axis, providing substantial working envelope for complex parts. The machine is equipped with a #40 spindle taper driven by a 25 HP spindle motor, capable of speeds ranging from 60 to 12,000 RPM, allowing versatile machining across various materials. It supports a rapid traverse rate and cutting feed rate up to 1417 inches per minute, enhancing productivity. The HG-400III includes two 15.75" x 15.75" rotary pallets, each with an 880 lb. load capacity, facilitating efficient workpiece handling and continuous operation. The pallet system provides full 360-degree indexing, enabling multi-face machining without manual repositioning. The tool storage system holds up to 30 tools with random bi-directional selection for flexible tool management. CNC control is managed by SEICOS 16M controls, which support complex programming and automation. Machine dimensions approximate 94" x 100" x 102", with a weight near 17,200 to 20,000 lbs, reflecting a robust build suited for industrial environments. The machine requires a 35 KVA electric power supply. The HG-400III is engineered to maintain high precision and rigidity, ideal for high-volume, high-accuracy milling tasks in aerospace, automotive, and general manufacturing sectors. Its combination of spindle power, travel, tooling capacity, and pallet automation make it a versatile horizontal machining center.