DAMIAO Joint Motor System for OpenArm Open-Source Robot Arm
Product Introduction
The DAMIAO Joint Motor System delivers a fully integrated drive solution tailored for the OpenArm open-source humanoid robot arm. Designed for precision and power, it combines DAMIAO’s 43-series and 8009P motors—each optimized for its corresponding joint—to achieve the perfect balance of torque, speed, and control from shoulder to wrist.
With its robust cross-roller bearing structure, the system provides outstanding rigidity and positioning accuracy, ensuring stable performance even under asymmetric loads. The DAMIAO 4340 model extends these capabilities with a lightweight yet high-torque design, making it ideal for compact robotic assemblies that demand both strength and efficiency.
Engineered for modularity and reliability, this joint motor platform enables seamless integration, precise motion coordination, and superior durability—offering researchers and developers a professional-grade foundation for humanoid robots, collaborative manipulators, and innovative robotic systems.
Parameters
|
Parameter |
DM-J4310-2EC V1.1 |
DM4340 series |
DM-J8009P-2EC |
| Datasheet | Datasheet of DM-J4310-2EC V1.1 | Datasheet of DM-J4340-2EC,Drawing of DM-J4340P-2EC | Datasheet of DM-J8009-2EC |
| Rated Voltage | 24V | 24V | 24V (Supports 24-48V) |
| Rated Current | 2.5A | 2.5A | 20A |
| Peak Current | 7.5A | 8A | 50A |
| Rated Torque | 3 Nm | 9 Nm | 20 Nm |
| Peak Torque | 7 Nm | 27 Nm | 40 Nm |
| Rated Speed | 120 rpm | 36 rpm | 24V:100 rpm/48V:200 rpm |
| Max No-load Speed | 200 rpm | 52 rpm | 24V:160 rpm/48V:320 rpm |
| Reduction Ratio | 10:1 | 40:1 | 9:1 |
| Number of Pole Pairs | 14 | 14 | 21 |
| Phase Inductance | 340μH | 317 μH | 61 μH(at 25°℃) |
| Phase Resistance | 650 mΩ | 760 mΩ | 90 mΩ(at 25℃) |
| Outer Diameter | 56mm | 57 mm | 98mm |
| Height | 46mm | 53.3mm | 61.7 mm |
| Motor Weight | 300 g | 362 g | 896g |
| Encoder Bits | 14-bitt | 14-bitt | 14-bit |
| No.of Encoders | 2 | 2 | 2 |
| Encoder Type | Magnetic encoder (single-turn) | Magnetic encoder(single-turn) | Magnetic encoder (single-turn) |
| Control Interface | CAN | CAN | CAN |
Your Purchase Includes:
2× DM-J8009P-2EC Motor
1× DM-J4340P-2EC Motor
1× DM-J4340-2EC Motor
4× DM-J4310-2EC Motor
2× DM-J8009P-2EC Motor
1× DM-J4340P-2EC Motor
1× DM-J4340-2EC Motor
4× DM-J4310-2EC Motor
Extensive Experience in UAV & Robotics Technologies
Independent Flight Control System Development Advanced Powertrain Engineering Professional Intelligent Battery Development