MES Inc. said on October 13, 2026, that robotics companies preparing for volume production need to move structural hardware out of billet machining and into scalable processes such as die casting, forging, and extrusion. The warning comes as China's Ministry of Industry and Information Technology projects domestic humanoid robot output above 100,000 units this year. For buyers of aluminum components, the message is direct: robot programs that wait until launch to convert prototype parts into castings may face tooling, capacity, and quality delays.
MES Says Prototype Hardware Will Not Scale
MES's guidance focuses on the mechanical hardware behind humanoid and mobile robots. Frames, chassis sections, actuator and joint housings, gearbox and harmonic-drive housings, motor enclosures, and battery or electronics housings all carry structural, thermal, and assembly requirements. At pilot volume, machining those parts from billet gives engineers freedom to change geometry quickly. At production volume, the same approach creates cost and capacity pressure.
The shift required is more than a change in machine shop routing. A housing designed for billet machining has to be redesigned for casting with suitable wall sections, draft, radii, datum schemes, and porosity-critical areas. After casting, the critical interfaces still need precision CNC machining. MES engineering manager Brad Layne said the part itself changes during conversion because machined features must hold tolerance against a cast surface.
| Production stage | Typical process choice | Main constraint |
|---|---|---|
| Prototype and pilot builds | CNC machining from billet | Fast design iteration and low tooling commitment |
| Launch preparation | Casting conversion plus machining on critical interfaces | DFM, tooling validation, porosity control, and datum planning |
| Volume production | Die casting, forging, or extrusion with secondary CNC machining | Tool life, cycle consistency, qualified capacity, and multi-supplier quality control |
China's 100,000-Unit Forecast Raises the Hardware Stakes
In July, Gan Xiaobin, deputy director of the science and technology department at China's Ministry of Industry and Information Technology, said China's humanoid robot output is expected to exceed 100,000 units in 2026. Xinhua reported the forecast from the World Artificial Intelligence Conference press conference, and The Robotics Media independently repeated the figure in its coverage of the same announcement.
A six-figure annual output target changes the manufacturing calculation. Software teams can scale updates quickly; hardware teams have to qualify materials, molds, suppliers, inspection plans, and machining fixtures before volume arrives. A robot maker that delays that work can end up with a software-ready product waiting on housings and structural parts.
The forecast also matters to suppliers outside China. Robotics companies in North America and Europe will benchmark their own production economics against the same question: which parts remain machined, which parts convert to castings or forgings, and which suppliers can carry the transition without a launch delay.
Five Constraints Move Up the RFQ Timeline
- Casting design needs to start before volume is confirmed. Wall thickness, draft, ribs, bosses, and gate locations determine whether a billet housing can become a stable die casting.
- Porosity control becomes a structural requirement. Robot frames and joint housings see repeated loads, so internal soundness, venting, injection control, and inspection need to be tied to the application.
- Tolerance stack-up crosses two processes. A cast datum and a machined bearing seat behave differently from features cut into solid billet. The drawing should show which features are cast to size and which are machined afterward.
- Tooling and validation lead time become schedule risks. Mold design, flow simulation, trials, first articles, and PPAP-style documentation need time before a supplier can hold production quality.
- Capacity needs a second path. A program moving from dozens of units to tens of thousands needs qualified capacity, spare tooling plans, and regional supply options if demand accelerates.
How We Read This at Meituo
The robotics transition described by MES follows the same pattern we see in appliance, automotive, and industrial programs: prototype-friendly geometry has to be rebuilt for tooling, then supported by stable casting and machining records. Our aluminum die casting operation runs 20 machines from 160T to 1650T, with UG 3D modeling, JSCAST flow simulation, CNC machining, spectrometer verification, and Zeiss CMM and X-ray inspection under IATF 16949 and ISO 9001 systems. For robotics or equipment programs approaching production volume, our manufacturing capabilities team can review which parts should convert to die casting and which features should remain machined.
Sources
- PR Newswire, As Humanoid Robot Output Climbs Toward 100,000 Units, MES Inc. Outlines the Manufacturing Shift From Billet Machining to Volume Production, October 13, 2026
- Xinhua, China's Humanoid Robot Output Expected to Exceed 100,000 Units This Year (Chinese), July 7, 2026
- The Robotics Media, China Says Humanoid Robot Output Will Top 100,000 Units in 2026, July 9, 2026
- MES Inc., Inside Robotics Manufacturing: What It Takes to Build Robots at Scale, accessed October 19, 2026
