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Robot Games: Rare Earths Power the Dance
 Aug 11, 2025|View:322

The world's first Humanoid Robot Games will open in Beijing on the evening of August 14th. Humanoid robots from around the world will showcase their excellent performance and advanced technologies. And rare earths are the crucial yet little-known "unsung heroes" in the "bodies" of these robots.

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Known as the "industrial vitamins", rare earths are the core of cores in the field of humanoid robots. Take Tesla's humanoid robot Optimus as an example, its driving motor relies on the high magnetic energy product and high saturation magnetic field characteristics of rare earth permanent magnet materials. It can generate a strong magnetic field with small volume and light weight, providing high torque density, allowing the robot to move smoothly and efficiently. Moreover, the motor has higher efficiency and power density, which can reduce energy consumption and extend battery life.

The amount of rare earth permanent magnet materials used in each humanoid robot is considerable. Data shows that each Tesla humanoid robot requires 3.5KG of neodymium-iron-boron permanent magnets, which is 1-7 times the amount used in a single new energy vehicle. It is expected that by 2035, the global demand for neodymium-iron-boron in humanoid robots will reach 23,760 tons, and the demand will grow explosively with the development of the industry.

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At this sports meeting, the excellent performance of the participating robots is inseparable from the role of rare earth permanent magnet materials in the braking and control systems. In the braking system, its high magnetic resistance characteristics reduce energy consumption, improve heat dissipation, and ensure that the robot stops quickly and smoothly. In the control system, the high-frequency response characteristics enable the motor to quickly respond to commands, achieve precise control, and improve work efficiency and accuracy.
As a major country with rare earth resources, China has profound technical accumulation and obvious industrial advantages in related fields.

This sports meeting will promote the development and popularization of humanoid robot technology, and the importance of rare earths has become increasingly prominent. It is believed that with the help of rare earths, humanoid robots will play a greater role in future production and life. Let's look forward to the "steel dancers" showing amazing technological charm under the empowerment of rare earths.

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