Engineering Educational Solution



รหัสสินค้า : 902-0005-001
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DYNAMIXEL is a robot exclusive smart actuator with fully integrated DC Motor + Reduction Gearhead + Controller + Driver + 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 robot 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

Package Components
AX-18A 1
B01-HORN (assembled) 1
3P Cable 200mm 1
Bolt PHS M2x6 16
Bolt PHS M3x10 1
Nut M2 (N1) 16
Compatible Products

Controller : CM-5, CM-510, CM530, CM-700, OpenCM9.04(+ OpenCM485 Expansion Board), OpenCR

Interface : USB2Dynamixel, U2D2

Factory Default Settings

ID : 1 

Baud Rate : 1Mbps

(User can change various settings including ID and baud rate according to environment)


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 VoltageMin. [V] 9.0
Recommended [V] 11.1
Max. [V] 12.0
Performance CharacteristicsVoltage [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 OperationVoltage [V] -
Torque [N·m] -
Speed [rpm] -
Current [A] -
ResolutionResolution [deg/pulse] 0.2930
Step [pulse] 1,024
Angle [degree] 300
Position Sensor Potentiometer
Operating TemperatureMin. [°C] -5
Max. [°C] 70
Motor Coreless
Baud RateMin. [bps] 7,843
Max. [bps] 1,000,000
Control Algorithm Compliance
Gear Type Spur
Gear Material Engineering Plastic
Precious 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] 55.90
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 version 1
Operating Mode / Angle Wheel Mode:Endless turn
Joint Mode:300 [deg]
Output [W] -
Standby Current [mA] 50

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