Mitsui Seiki Introduces Five-Axis Horizontal Machining Center for Single-Setup Aerospace Manufacturing!
Mitsui Seiki USA is showcasing its HU63A-5XT five-axis horizontal machining center at IMTS 2026, highlighting a high-precision mill-turn platform engineered to meet the demanding requirements of modern aerospace manufacturing. Designed to combine simultaneous five-axis milling and turning in a single machine, the HU63A-5XT enables manufacturers to complete complex components from roughing to finishing in one setup. By eliminating multiple machine transfers and reducing repeated clamping operations, the system helps improve machining accuracy, increase productivity and minimise the risk of dimensional errors that can result in costly scrap and rework.
As aerospace components become increasingly complex, manufacturers are under pressure to produce precision parts with tighter tolerances while reducing production time and improving process reliability. Components such as engine cases, structural housings and other critical aerospace parts often require multiple machining operations that traditionally involve several machines and repeated setups. Each additional setup introduces the possibility of alignment errors and dimensional inconsistencies. The HU63A-5XT addresses these challenges by integrating milling and turning capabilities into a single platform, allowing complete machining of intricate workpieces while maintaining exceptional repeatability.
The machining centre features 900 mm travel in the X, Y and Z axes, combined with full simultaneous five-axis machining capabilities. At the heart of the system is a high-torque spindle capable of delivering up to 1,081 Nm of torque, enabling efficient machining of both roughing and finishing operations. The machine also offers positioning accuracy of ±0.001 mm, providing the precision required for critical aerospace applications where dimensional consistency and surface quality are essential.
Designed to process difficult-to-machine materials such as titanium, nickel-based superalloys and other advanced aerospace materials, the HU63A-5XT delivers a wide cutting feed range from 0.1 mm/minute to 10,000 mm/minute across the X, Y and Z axes. Rapid traverse speeds reach 12,000 mm/minute on the X-axis and 24,000 mm/minute on both the Y and Z axes, allowing the machine to reduce non-cutting time while maintaining high productivity. Rotary axis performance is equally impressive, with the A-axis capable of 2,160 degrees per minute and the B-axis reaching 3,600 degrees per minute, enabling fast and precise multi-axis positioning for complex machining operations.
Automation has been integrated as a standard feature to support high-volume and lights-out manufacturing environments. The machine is equipped with 630 mm square pallets, an automatic pallet changer (APC) and an automatic tool changer, allowing uninterrupted production and faster job changeovers. These automation capabilities improve machine utilisation while reducing operator intervention, making the HU63A-5XT suitable for manufacturers seeking higher productivity and greater operational efficiency.
Despite its advanced capabilities, the machine has been designed with a compact and practical layout. Including two automatic pallet changers and a chip conveyor, the complete system measures 5,700 mm × 4,700 mm × 3,450 mm, making efficient use of valuable factory floor space while providing the capacity needed for large and complex aerospace components.
The machining centre is powered by the FANUC Series 501 iS-A controller, specifically developed for high-speed, multitasking machining applications. In addition to simultaneous milling and turning, the system supports a wide range of machining operations including drilling, boring, tapping and reaming, allowing manufacturers to complete virtually all machining processes within a single setup. This comprehensive capability helps reduce production lead times while improving overall process consistency.
Commenting on the machine, Daniel Cleary, President and CEO of Mitsui Seiki USA, said the integration of full five-axis machining and turning capabilities within a single platform enables manufacturers to complete highly complex components in one setup. According to Cleary, this approach reduces process variation, improves production throughput and delivers the level of precision required for today’s most demanding aerospace applications.
By combining high-precision machining, integrated automation and advanced mill-turn functionality, the HU63A-5XT represents Mitsui Seiki’s commitment to supporting the next generation of aerospace manufacturing. The machine provides manufacturers with a flexible and highly productive solution capable of machining complex, high-value components while improving accuracy, reducing setup times and enhancing overall manufacturing efficiency.
