QDD A2 Actuator
Next-generation quasi-direct drive actuator delivering 12 Nm peak torque with exceptional backdrivability and force control. Ideal for small-size quadruped robots, collaborative robot arms, and small-size industrial robots.

QDD A2 Quasi-Direct Drive Actuator - 12 Nm Peak Torque
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Overview
The QDD A2 is xTerra's next-generation of QDD actuators, optimized for maximum torque in its weight category. Achieving high-efficiency and exceptional output torque, the A2 provides exceptional performance for collaborative and dynamic robotic systems. With 12 Nm peak torque in a 550g package, this actuator delivers outstanding torque density.
Best For: Small-size quadruped robots, small-size industrial robots, collaborative robot arms, mobile manipulators, research platforms, educational robotics.
Key Specifications
| Parameter | Value |
|---|---|
| Weight | 550 grams |
| Peak Torque | 12 Nm |
| Voltage Input | 10-24V DC |
| Peak Power | 500W |
| Control Mode | FOC (Field-Oriented Control) |
| Control Rate | 15-30 kHz |
| Outer Diameter | 77 mm |
| Thickness | 50 mm |
| Power Connector | 2x XT-30 |
| Data Connector | 2x JST PH-3 |
| Torque Improvement over A1 | 3.17x (217% increase) |