Mitsui Seiki USA to introduce 5-axis Vertex55X NEO VMC at IMTS 2026

The 5-axis envelope is mid-range for the class: 550 x 600 x 500 mm travels on X/Y/Z, with the tilting A and rotary C. That covers most mould tools and small blades but not large aerospace structural parts — for those you'd be looking at the Mitsui HMCs and larger 5-axis platforms. The frame size positions it as a precision mould-die workhorse rather than a structural-parts mill.

The IMTS timing is the play here. Mitsui Seiki doesn't release often, and the 100-year heritage story plus the Swartzbaugh talk on AI-driven precision (Wed Sept 16, 9am, Room W192-A) make this a coordinated push into the North American mould and die market. If you're specifying a new 5-axis VMC for toolroom work, this is worth a booth visit.

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Mitsui Seiki USA will launch the Vertex55X NEO 5-axis vertical machining centre at IMTS 2026 in Chicago, 14–19 September (booth 338700, South Building). The machine is positioned for precision 5-axis work in mould and die, complex blade machining, and difficult-to-cut ceramics.

The headline specifications are 30,000 RPM spindle speed, ±0.001 mm positioning accuracy, and a tilting A-axis with full rotary C-axis for simultaneous 5-axis contouring. Travels are 550 mm X, 600 mm Y, and 500 mm Z — mid-range for the class, large enough for most mould tools and small blades, but not the size class for large structural aerospace parts. The control is a FANUC 31i-B5 Plus with AI contour control and high-speed processing.

The mechanical design leans on Mitsui Seiki's heritage in jig boring and precision grinding. Roller-type linear guideways are used for rigidity on all axes. Position feedback is via absolute linear glass scales on X/Y/Z and absolute rotary Inductosyn scales on the A and C axes, which means the machine knows its exact position on power-up with no homing sequence. Cutting feed rates span 0.1–48,000 mm/min on linear axes; the A (tilt) axis runs to 40 RPM and the C (rotary) to 30 RPM cutting feed.

The application focus is mould and die shops running tough materials — Inconel, titanium, hardened tool steels — where reducing hand-polishing and lead times is the main economic driver. Integrated automation, probing, and high-speed tool change options are available.

Mitsui Seiki is also scheduling a technical talk at IMTS: Nathan Swartzbaugh, Director of Sales West, presents on AI-driven analysis for high-precision CNC processes on Wednesday 16 September, 9:00–9:55 am in Room W192-A (West Building). The Vertex55X NEO is fully customisable to customer spec.