DYNAMIXEL AX-18A - Useabot
DYNAMIXEL AX-18A - Useabot
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DYNAMIXEL is a robot exclusive smart actuator with fully integrated DC Motor + Controller + Driver + Sensor + Reduction Gear + Network in one DC servo module.

DYNAMIXEL AX-series are used in ROBOTIS STEM, Premium, and GP. You can easily create various types of robots such as humanoid, 4 legged and 6 legged robots with the AX-series. 

It can also be used as a wheel so that you can create a robot with a combination of wheel type and joint type in a single module.

By using a variety of high-strength engineering plastic option frames or by printing frames using a 3D printer, you can produce any type of robot at a low cost.

AX-18A is a high performance version of the popular DYNAMIXEL AX-12A, and can be applied to robots that need more power.


Applied a 4th metal gear to enhance endurance



  • AX-18A, quantity = 1
  • B01-HORN (assembled), quantity = 1
  • BPF-WA/BU Set, quantity = 1
  • 3P Cable 200mm, quantity = 1
  • Bolt PHS M2x6, quantity = 16
  • Bolt PHS M3x10, quantity = 1
  • Nut M2 (N1), quantity = 16
Only AX-series frames can be used. Optional frames for MX-series and X-series cannot be used.
Please maintain the highest limit temperature the same as the default setting value for safe usage
Model Name AX-18A
Input Voltage Min. [V] 9.0
Recommended [V] 11.1
Max. [V] 12.0
Performance Characteristics Voltage [V] 12.0
Stall Torque [N·m] 1.80
Stall Current [A] 2.2
No Load Speed [rpm] 97.0
No Load Current [A] 0.17
Continuous Operation Voltage [V] -
Torque [N·m] -
Speed [rpm] -
Current [A] -
Resolution Resolution [deg/pulse] 0.2930
Step [pulse/rev] 1
Angle [degree] 300
Position Sensor Potentiometer
Operating Temperature Min. [°C] -5
Max. [°C] 70
Motor Coreless
Baud Rate Min. [bps] 7,843
Max. [bps] 1,000,000
Control Algorithm Compliance
Gear Type Spur
Gear Material Engineering Plastic and Metal
Case Material Engineering Plastic
Dimensions (WⅹHⅹD) [mm] 32 X 50 X 40
Dimensions (WⅹHⅹD) [inch] 1.26 X 1.97 X 1.57
Weight [g] 56.00
Weight [oz] 1.97
Gear Ratio 254 : 1
Command Signal Digital Packet
Protocol Type Half duplex Asynchronous Serial Communication (8bit, 1stop, No Parity)
Link (Physical) TTL Level Multi Drop Bus
ID 0 ~ 253
Feedback Position, Temperature, Load, Input Voltage, etc.
Protocol Type Protocol 1.0
Operating Mode / Angle Wheel Mode: Endless turn
Joint Mode:300 [deg]
Output [W] -
Standby Current [mA] 50