![](\"https:\/\/media.thenextweb.com\/2026\/08\/ai-weaken-human-capability-cognitive-debt2.avif\")
<\/p>\nActuators account for 40% to 60% of a humanoid robot\u2019s bill of materials and China refines roughly 90% of the rare earth magnets inside them, which makes the components rather than the models the limit on scale. Europe has a 2030 cap on single country supply under the Critical Raw Materials Act, and one company, Schaeffler, building the actuators at volume.<\/p>\n
The hardest problem in physical AI is not the AI. Actuators are in short supply from a small pool of qualified manufacturers, and new capacity takes years, not quarters, Nate Evans wrote<\/a> in Unite.ai.<\/p>\n The argument arrives with an interest attached. Evans cofounded Fictiv, a manufacturing sourcing platform the Japanese components supplier MISUMI bought for $350M, and now heads MISUMI AI.<\/p>\n The column drops the point just as it gets useful. Actuators are 40% to 60% of a humanoid robot\u2019s bill of materials, McKinsey found<\/a>, and the gearbox is 30% to 50% of the actuator.<\/p>\n That gearbox is where the queue forms. Harmonic and strain wave drives come from a short list including Harmonic Drive and Nabtesco, and qualification cycles are long.<\/p>\n Inside the motor sits the harder dependency. Every high torque joint needs a neodymium magnet, and China holds about 90% of the processing capacity for rare earth magnets.<\/p>\n The mining figure is lower and less alarming. China accounts for roughly 69% of extraction, so refining rather than ore is what binds.<\/p>\n Europe has written a law about exactly this. Light and heavy rare earths sit on the strategic raw materials<\/a> list, with a 2030 target that no single third country supplies more than 65% of consumption.<\/p>\n The Critical Raw Materials Act also reaches the robot itself. Articles 28 and 29 name industrial robots directly, and from 2028 magnets above 0.2kg need a label, a digital record and a recycled content figure.<\/p>\n Europe\u2019s industrial answer is currently one company. Schaeffler invested in Humanoid, the London startup that raised $152M in July, and Bosch builds the robots.<\/p>\n Schaeffler also sells the joints. It is preferred supplier for more than half of Humanoid\u2019s joint actuators under an agreement running to 2031, covering a seven-digit number of units.<\/p>\n It is buying as well as supplying. Schaeffler will put a four-digit number of the robots into its own plants by 2032, starting at Herzogenaurach in December. TNW has argued Europe could win on deployment despite China holding 63% of the hardware chain.<\/p>\n Which is where the column\u2019s remedy runs out. An actuator assembled in Herzogenaurach still contains a magnet refined in China, and no amount of supplier qualification changes that.<\/p>\n The gap is a policy one rather than a purchasing one. Europe has a 65% cap dated 2030, a labelling regime dated 2028, and almost no refining capacity to meet either.<\/p>\n<\/p><\/div>\n If you liked the article, do not forget to share it with your friends. Follow us on\u00a0Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n If you want to read more like this article, you can visit our Technology category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n\n