DAMIAO DM-J4310-2EC Joint Motor

A small all-in-one joint actuator from Shenzhen's DAMIAO Technology, common in desktop arms and small humanoid joints.

The DM-J4310-2EC is a compact joint module from Shenzhen DAMIAO Technology that integrates a brushless motor, reducer, driver, and dual encoders in one unit; its output shaft reads single-turn absolute position, and it takes commands and reports back velocity, position, torque, and temperature over a CAN bus. The official V1.1 spec lists a rated torque of 3 N·m and a peak of 7 N·m, with later versions improving on this. It's inexpensive and simple to wire, and supports the common “MIT mode” (sending position, velocity, stiffness, damping, and feedforward torque all at once), so it's widely used in student projects, open-source robot arms, and lightly loaded joints like the arms and head of humanoid robots — a common “off-the-shelf part” for beginners building real robots.

ExampleBuilding a low-cost 6-axis desktop robot arm, the three wrist joints commonly use the DM4310, with a larger DAMIAO motor swapped in for the upper arm.

Also called

DM4310, DM-J4310-2EC, Damiao Motor

Related

Joint Actuator Module · DAMIAO Technology · MIT Mode · Controller Area Network (CAN) · Dual Encoder · Quasi-Direct Drive

Sources

DM-J4310-2EC V1.1 关节电机 - 深圳市达妙科技 (Chinese)

As of

2025