Hand Dexterity Comparison
DOF = degrees of freedom, the number of independent joints in each hand — more DOF means finer manipulation (picking up a coin, threading a needle). Tesla Gen 3 and 1X NEO tie at 22, Fourier GR-2 at 12; a human hand has 27 as the benchmark.
Degrees of freedom (DOF) per hand across humanoid robot platforms. Human hand shown as reference (27 DOF). Shadow Dexterous Hand is the research benchmark. Sources: manufacturer specs, research papers.
Supply Chain Geographic Concentration
Where humanoid robot parts are actually made. China dominates rare earth processing (90%), battery manufacturing (86%), and cell assembly (77%); Japan controls 85% of precision reducers (the high-tolerance gearboxes inside each joint).
| Component | Dominant Country | Global Share | Key Companies | Risk |
|---|---|---|---|---|
| Rare Earth Processing | China | ~90% | Northern Rare Earth, China Minmetals | Critical |
| Rare Earth Mining | China | ~69% | Various state-owned | High |
| Battery Manufacturing | China | 86% of global capacity | CATL (38.1%), BYD (16.7%) | Extreme |
| Battery Cell Assembly | China | ~77% | CATL, BYD, CALB, EVE Energy | High |
| Cobalt Mining | DRC (Congo) | 76% | Glencore, CMOC (Chinese-owned) | Critical |
| Cobalt Refining | China | ~80% | Huayou Cobalt, GEM Co. | Critical |
| Lithium Mining | Australia | ~47% (86,000 MT) | Pilbara Minerals, Allkem | Moderate |
| Lithium Refining | China | ~65% | Ganfeng, Tianqi Lithium | High |
| Harmonic Drives | Japan | ~85% (Nabtesco + HD Systems) | Nabtesco, Harmonic Drive Systems | Very High |
| RV Reducers | Japan | ~60% | Nabtesco | High |
| Precision Motors (coreless) | Germany/Switzerland | ~70% combined | Maxon (CH), Faulhaber (DE), Portescap (US/CH) | Moderate |
| AI Compute Chips (design) | USA | ~90% (design) | NVIDIA (dominant), Qualcomm (emerging) | Moderate |
| AI Compute Chips (fabrication) | Taiwan | ~90% (advanced nodes) | TSMC | Critical |
| Force/Torque Sensors | USA/Denmark | ~60% combined | ATI Industrial (USA), OnRobot (Denmark) | Moderate |
| Depth/Vision Sensors | USA/France | ~50% | Intel RealSense (USA), Stereolabs (FR), Luxonis (USA) | Moderate |
| Carbon Fiber | Japan | ~50% | Toray, Teijin, Mitsubishi Chemical | Moderate |
| Critical Mineral Refining (avg) | China | ~70% (19 of 20 minerals) | Various state-owned + private | N/A |
Geographic concentration of critical humanoid robot supply chain components. Risk assessment reflects single-country dependency and substitution difficulty. Sources: IEA, USGS, industry reports.
Actuator BOM Detail
Cost split inside each actuator (joint motor) by type. Rotary actuators are driven by harmonic-drive gearboxes (36% of cost), linear actuators by roller screws (64%), and dexterous hands by tiny coreless motors (50%).
Rotary Actuator
Linear Actuator
Dexterous Hand
Component-level bill of materials for each actuator subsystem. Percentages represent share of that actuator's total cost. Sources: teardown analyses, supplier pricing, industry estimates.