Description
The ROBOTIS DYNAMIXEL AX-18A Smart Servo Actuator is a high-performance, robot-exclusive actuator that integrates a DC motor, controller, driver, position sensor, reduction gear, and communication interface into one compact module. Designed for intelligent motion control, it offers precise positioning, high torque, and reliable communication for both educational and professional robotics applications.
Part of the DYNAMIXEL AX-series, the AX-18A is widely used in ROBOTIS STEM, Premium, and GP robot kits. Its compatibility with TTL daisy-chain communication allows multiple servos to be connected efficiently, making it ideal for humanoid, quadruped, and hexapod robots. The actuator can also operate as a wheel for mobile platforms, allowing versatile configurations that combine joint and wheel-type motions.
Using high-strength engineering plastic frames or custom 3D-printed brackets, users can design and assemble robots with durability and flexibility at a low cost.
Key Features
• Integrated smart actuator: DC motor + controller + driver + sensor + gear + communication
• TTL serial communication network for easy daisy-chaining
• Suitable for various robot types — humanoid, legged, or wheel-based
• Compact and lightweight with high torque and precision control
• Compatible with ROBOTIS educational and professional robot kits
What’s Included
• 1 × ROBOTIS DYNAMIXEL AX-18A Smart Servo Actuator
Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 12 V DC |
| Gear Ratio | 254:1 |
| Stall Torque | 1.8 N·m |
| Stall Current | 2.2 A |
| No-Load Speed | 97 rpm |
| Standby Current | 50 mA |
| Position Sensor | Potentiometer |
| Motor Type | Coreless DC |
| Operating Angle Range | 300° |
| Resolution | 1024 steps/turn |
| Communication Interface | TTL |
| Baud Rate | 7,843 bps – 1 Mbps |
| Material (Casing) | Engineering Plastic (Enpla) |
| Gear Material | Engineering Plastic + Metal |
| Operating Temperature | -50°C ~ 70°C |
| Dimensions | 32 × 50 × 40 mm (1.26 × 1.97 × 1.57 in) |
| Weight | 55.9 g |
Applications
• Educational robotics kits (ROBOTIS STEM, Premium, GP)
• Humanoid and multi-legged robots
• Mobile robotic platforms (wheel mode)
• Custom robotic mechanisms with 3D-printed frames
