Product Description
The DAMIAO DM-J4340P-2EC is a high-performance integrated robotic joint actuator designed for robotic arms, quadruped robots, humanoid robots, AGV systems, and intelligent automation equipment.
Featuring an integrated brushless servo motor, planetary gearbox, dual encoder system, and built-in motor driver, the DM-J4340P-2EC significantly reduces wiring complexity while providing precise position, velocity, and torque control through CAN Bus communication.
With a rated torque of 9Nm and peak torque of 27Nm, this actuator delivers excellent power density and smooth motion performance for advanced robotic applications. The dual-encoder architecture improves control accuracy and gearbox compensation, making it suitable for high-precision robotic joints.
The actuator supports multiple control modes including MIT Mode, Position Mode, Velocity Mode, and Torque Control Mode, enabling seamless integration into modern robotics platforms.
Key Features
- 9Nm Rated Torque / 27Nm Peak Torque
- Built-in Servo Driver (No External Driver Required)
- Dual 14-bit Magnetic Encoder Feedback
- Integrated 40:1 Planetary Gearbox
- CAN Bus Communication @ 1Mbps
- UART Configuration Interface @ 921600bps
- MIT Mode / Position Mode / Velocity Mode
- Cross Roller Bearing Output Structure
- Multi-Layer Safety Protection Functions
- Compact 57mm Diameter Robotic Joint Design
- Suitable for Humanoid, Quadruped and Robotic Arm Applications
Encoder System
Parameter Value Encoder Quantity 2 Encoder Resolution 14-bit Encoder Type Single-Turn Magnetic Encoder Position Feedback Absolute Position Joint Feedback Dual Encoder Architecture
Specifications
| Parameter | DM-J4340P-2EC (24V) | DM-J4340P-2EC (48V) |
|---|---|---|
| Nominal Voltage | 24V | 48V |
| Nominal Current | 2.5A | 2.5A |
| Peak Current | 8A | 8A |
| Rated Torque | 9Nm | 9Nm |
| Peak Torque | 27Nm | 27Nm |
| Rated Speed | 36RPM | 36RPM |
| Max No-load Speed | 52RPM | 100RPM |
| Gear Ratio | 40:1 | 40:1 |
| Pole Pairs | 14 | 14 |
| Phase Inductance | 360μH | 360μH |
| Phase Resistance | 880mΩ | 880mΩ |
| Outer Diameter | 57mm | 57mm |
| Height | 56.5mm | 56.5mm |
| Weight | 375g | 375g |
| Encoder Resolution | 14-bit | 14-bit |
| Encoder Quantity | 2 | 2 |
| Encoder Type | Single-Turn Magnetic Encoder | Single-Turn Magnetic Encoder |
| Communication Interface | CAN @ 1Mbps | CAN @ 1Mbps |
| Configuration Interface | UART @ 921600bps | UART @ 921600bps |
Mechanical Dimensions
| Item | Specification |
|---|---|
| Diameter | 57mm |
| Height | 56.5mm |
| Weight | 375g |
| Front Mounting PCD | Ø50mm |
| Rear Mounting PCD | Ø38mm |
| Front Mounting Holes | 6 × M3 |
| Rear Mounting Holes | 4 × M2.5 |
Communication Interfaces
Power & CAN Interface
- XT30 (2+2)-F Power Connector
- CAN_H / CAN_L Communication
- Supports CAN command control
- Supports status feedback
- Multiple actuators can be daisy-chained
UART Configuration Port
- GH1.25 3-Pin Connector
- GND / RX / TX
- Firmware Upgrade
- Parameter Configuration
- Debugging and Calibration
Applications
- Robotic Arms
- Humanoid Robots
- Quadruped Robots
- AGV & AMR Platforms
- Educational Robotics
- Industrial Automation
- Exoskeleton Systems
- Research & Development Platforms
- Service Robots
- Collaborative Robots (Cobots)
Package Includes
- 1 × DAMIAO DM-J4340P-2EC Servo Actuator
FAQ
What control protocol does the DM-J4340P-2EC support?
The actuator supports CAN Bus communication at 1Mbps and can be configured through the UART interface.
Does the actuator include a motor driver?
Yes. The driver is fully integrated inside the actuator housing, eliminating the need for an external servo driver.
What is the gearbox ratio?
The built-in planetary gearbox has a reduction ratio of 40:1.
What encoder does this actuator use?
It uses a dual-encoder architecture with a 14-bit single-turn magnetic encoder system.
Can multiple actuators be connected together?
Yes. The CAN interface supports multi-node networking and daisy-chain connections.
Is it suitable for robotic arm joints?
Yes. The 9Nm rated torque and integrated design make it ideal for robotic arm and leg-joint applications.
