RFQ Preparation Checklist
- Axis-by-axis torque-speed target table
- Weight and envelope constraints per joint
- Protocol topology and synchronization requirement
- Validation plan for gait and manipulation modes
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Humanoid Robot Joint Systems
Joint actuation architecture guidance for humanoid upper/lower body modules with focus on torque density, precision, and integrated control.
Target Buyer:Best for humanoid robotics teams defining architecture, sample plan, and supplier qualification criteria.
Solution Highlights
- Axis-by-axis actuator class mapping
- Upper-body precision and lower-body impact balance
- Integration considerations for encoder and communication stack
Common Use Cases
- Humanoid shoulders/elbows/wrists
- Hip/knee/ankle modules
Implementation Focus
- Axis load cases by kinematic chain
- Precision vs shock-resilience trade-off
- Cable routing and hollow-shaft strategy
Application Evaluation Matrix
| Evaluation Metric | Typical Range | Buyer Relevance |
|---|---|---|
| Power Density | Joint-class dependent | Directly influences robot mass distribution and dynamic stability. |
| Joint Torque Range | 5–80 Nm (upper body) / 50–200 Nm (lower body) | Sizing mismatch between upper and lower body joints is the most common architecture error. |
| Encoder Resolution | 19-bit to 20-bit absolute | Determines closed-loop control bandwidth for stable walking gaits and manipulation tasks. |
Risk and Mitigation
- Single actuator class used across incompatible joints: Build axis-segmented actuator strategy in the RFQ stage.
- Thermal runaway during sustained walking test: Define thermal acceptance criteria per joint at the prototype gate, not during mass production.
- Cable routing failure after repeated shoulder rotation: Specify hollow-shaft actuators for high-rotation joints and validate cable fatigue separately.
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Buyer FAQ
Do you support mixed reducer strategies in one project?
Yes. Mixed harmonic/planetary/cycloidal strategies are supported by axis requirements. We commonly supply harmonic for wrist/elbow and cycloidal for hip/knee within the same humanoid project.
What is the typical lead time for a humanoid joint actuator prototype set?
First sample delivery is typically 6-8 weeks after requirement freeze. This includes DFM review, custom winding if required, and initial bench test validation.
Can you provide actuator recommendations by humanoid weight class?
Yes. We maintain sizing references for 20 kg, 50 kg, and 70 kg humanoid platforms covering shoulder, elbow, wrist, hip, knee, and ankle joints.
Related Resources
Engineering RFQ Email
Include torque-speed targets, annual volume, and timeline.
Lead Robotics Engineer
+86 18857971991
Direct technical conversation with our lead robotics engineer.