High Precision Humanoid Robot Harmonic Gear Motor Rotary Actuator
The Robot Joint Motor achieves precise motion control through an integrated set of components, including a harmonic drive, a frameless torque motor, a brake, an encoder, and a drive unit, all optimized for size and weight. It delivers greater torque, higher precision, a more compact size, and a lighter weight. We also provide customization services according to customers’ specific requirements. Robot Joint Motors typically support a wide voltage range of DC24V~DC48V. As a core component of the robotics industry, technological advancements in Robot Joint Motors will continue to drive the development of specialized and humanoid robots, enabling them to achieve greater flexibility and broader application scenarios. Beyond robotics, Robot Joint Motors are also applied in semiconductor equipment, photovoltaic equipment, precision medical equipment, 3C equipment, optical equipment, and other fields.
Core Components
- Power Unit (Frameless Torque Motor): It offers high torque density and a compact structure, making it suitable for high-dynamic load scenarios.
- Harmonic Drive: achieves speed reduction and torque multiplication, featuring zero backlash and high precision (backlash controlled within 20 arcsec).
- Dual Encoders (Motor-side + Output-side): Support complete closed-loop control with repeat positioning accuracy of ±10 arcsec.
- Temperature Sensor: Monitors load and environmental conditions in real-time to enhance safety and adaptability.
- Embedded Drive Unit: Supports protocols like EtherCAT and CANopen, enabling dynamic PID adjustment.
Features
- Superior precision & zero backlash
- High Precision and Zero Backlash
Zero-backlash design eliminates transmission clearance in traditional reducers, achieving repeat positioning accuracy of ±10 arcsec and absolute positioning accuracy of ±30 arcsec, making it suitable for precision motion-control applications (e.g., surgical robots, collaborative robotic arms).
3D Conjugate Dual-Arc Tooth Profile Technology
Optimizes tooth profile structure, reduces vibration and noise, improves transmission stiffness and service life, enabling smoother and more precise robot movements.
- Highly Integrated, Compact, and Lightweight Design
- Compact size and light weight
The high integration of the harmonic drive and frameless torque motor yields a compact structure, making it suitable for space-constrained applications (e.g., robot wrists and head joints).
- Lightweight material application: Uses high-strength aluminum alloy, carbon fiber, and other materials to reduce weight and improve robot energy efficiency and flexibility.
- High Transmission Efficiency:Â Transmission efficiency exceeds 80%, reducing energy loss and supporting efficient power transmission under dynamic load changes.
- High Safety and Reliability:Â Torque sensor integration (customizable). Supports collision detection and drag-and-drop teaching functions, enhancing the safety of human-robot collaboration.
- Impact resistance and long service life: The harmonic drive can withstand high-load emergency stops and has a precision lifespan exceeding 10,000 hours, making it suitable for harsh industrial environments.
- Intelligent Integration and Control:Â Embedded controller with multi-protocol compatibility: Supports communication protocols like EtherCAT and CANopen, enabling dynamic PID adjustment.
- Modular design: Standardized interfaces facilitate quick integration and maintenance.







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