Overview
The MyActuator RH-25 Motor is an RH Series harmonic actuator motor with CAN BUS/EtherCAT communication, designed for robotics and automation applications requiring compact drive integration and precise repeatable positioning.
For product selection support or pre-sale technical questions, contact support@rcdrone.top or visit https://rcdrone.top/.
Key Features
- RH Series Harmonic Actuator
- Communication: CAN BUS & EtherCAT
- High Precision
- Low Noise
- Hollow Design
- High Efficiency
- Dual Encoder
Technical Specifications
| Gear Ratio | 100 |
| Input Voltage | 48V |
| No Load Speed | 30RPM |
| No-Load Input Current | 2A |
| Rated Speed | 25RPM |
| Rated Torque | 108N.m |
| Rated Output Power | 282W |
| Rated Phase Current | 10.6A(rms) |
| Peak Torque | 157N.m |
| Peak Phase Current | 14.1A(rms) |
| Motor Back-EMF Constant | 19.2Vdc/Krpm |
| Module Torque Constant | 10.1N.m/A |
| Motor Phase Resistance | 0.16Ω |
| Motor Phase Inductance | 0.33mH |
| Pole Pair | 10 |
| 3 Phase Connection | Y |
| Backlash | <40 Arcsec |
| Radial Load Static load | 35.8KN |
| Radial Load Dynamic load | 21.8KN |
| Axial Load Static load | 198.2KN |
| Axial Load Dynamic load | 49.1KN |
| Inertia N | 1.94Kg.cm² |
| Encoder Type | Dual Encoder ABS-17BIT(Input) | ABS-17BIT(Output) |
| Repeat Position Accuracy | <0.01Degree |
| Communication | CAN BUS/EtherCAT |
| Weight N | 2.42Kg |
| Insulation Grade | F |
Applications
- Humanoid robots
- Robotic arms
- Exoskeleton robots
- Quadruped robots
- AGV vehicles / smart warehousing robots
- Gimbal / PTZ systems
- Industrial automation equipment (including CNC machine tools)
- Inspection systems
Model Naming (EPS-RH Series)
- EPS: Brand name (E-Efficency, P-Precision, S-Smart)
- RH: Series name (Harmonic Actuator)
- 17: Harmonic model (e.g. 14/17/20/25/32 etc)
- 100: Reduction ratio 100:1
- E: Communication (CAN BUS & EtherCAT)
- B: N = without brake; B = with brake
- D: D = dual encoder; S = single encoder
Example model format: EPS-RH-20-100-E-N-D
Manuals / Documents
- MyActuator_RH_25_stp.zip
- Motor_Motion_Protocol.pdf
- EtherCAT_control_protocol.pdf
- 1MT.055.022_RH-25-100-E-N.pdf
- RH-25_Accessories.pdf
Note: Product series pictures may differ from the actual product.
Details

RH Series harmonic actuators combine compact integration, low noise operation, and CAN BUS/EtherCAT communication for robotics motion control.

Model naming helps confirm key options at a glance, including reduction ratio, CAN BUS/EtherCAT interface, brake choice, and dual encoder configuration.
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