
MJA-H Series Lightweight Actuator
New Products• Specifically developed for the application of lightweight humanoid robot arms, customized services are provided.
• Integrated harmonic reducer, motor, encoder and driver.
• High positioning accuracy, significantly improved reliability and stability.
• Ingenious structure, lighter, smaller and more compact.
• Assemble humanoid robots arms quickly, significantly shortening the development cycle.
Application ScenariosSpecific Cases >
Widely applied to humanoid robots, bipedal robots, bionic robots, etc.
- 0.31kgMin Self-weight
- 57.5mmMin Diameter
- 48N·mMax Average Load Torque
- 35rpmMax Speed
- 60arcsecRepeatability
Customized Lightweight Humanoid Robot Arms
New Craftsmanship with Unique Ingenuity
Solve the adaptability and stability of robots in more complex working environments

Technical Specifications
Specification
Items | Unit | MJA-H11 | MJA-H17S | MJA-H17T | MJA-H17Z |
Parameters of Harmonic Drive Reducer | |||||
Reduction Ratio | -- | 101 | 100 | 120 | 120 |
Gearbox Backlash | arcsec | ≤20 | ≤20 | ≤20 | ≤20 |
Transmission Accuracy | arcmin | <1 | <1 | <1 | <1 |
Average Lifespan | Hour | 20000 | 20000 | 20000 | 20000 |
Output Capability | |||||
Permissible Starting and Stopping Torque | N·m | 7.7 | 56 | 56 | 56 |
Average Load Torque | N·m | 6.2 | 25 | 48 | 48 |
Maximum Instantaneous Torque | N·m | 11.5 | 80 | 80 | 80 |
Maximum Allowable Bending Torque | N·m | 16 | 30 | 30 | 30 |
Rated Speed | rpm | 30 | 30 | 25 | 25 |
Maximum Speed | rpm | 35 | 35 | 29 | 29 |
Repeatability | arcsec | <60 | <60 | <60 | <60 |
Absolute Positioning Accuracy | arcsec | <300 | <300 | <300 | <300 |
Servo System | |||||
Motor Power | W | 115 | 100 | 180 | 180 |
Rated Voltage | VDC | 24 | 48 | 48 | 48 |
Rated Current | A(rms) | 6.5 | 3.8 | 5 | 5 |
Peak Current | A(rms) | 13.5 | 11.6 | 14.5 | 14.5 |
Incremental Encoder | P/R | 6280 | 8000 | 8000 | 8000 |
Absolute Encoder | Bit | 17 | 17 | 17 | 17 |
Communication Protocol | -- | EtherCAT / CANopen | |||
Dimensions | |||||
Diameter | mm | 57.5 | 76 | 76 | 90 |
Length | mm | 65 | 78.5 | 85.5 | 85.5 |
Through Hole Diameter | mm | 5 | 7 | 7 | 9.8 |
Weight | kg | 0.31 | 0.75 | 0.81 | 0.81 |
Other Specification | |||||
Sensor | / | ||||
Brake | / | ||||
IP Degree | IP40 | ||||
Operating Environment | Operating Temperature: 0~40°C (Optional: -40 to 60°C), Storage Temperature: -40~ 80°C, Ambient Humidity: 90% Relative Humidity (Non-condensing) |
Note: We offer OEM/ODM customization services. If you have any additional technical requirements, please contact us for further consultation.
Rapidly Assemble Humanoid Robots Arms
Assisting in saving time and labor costs during the processes of robot design, accessory selection, performance testing, etc.
- Learn about the Lightweight Humanoid Robot Arms