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[902-0064-000] MX-28R



– MX-28R supports RS-485 communication.

 Recommended voltage of MX-28 is different with that of former RX-28.

– Operating Voltage : 10~14.8V (Recommended Voltage: 12V)



  • DYNAMIXEL is a robot exclusive smart actuator with fully integrated DC Motor + Reduction Gearhead + Controller + Driver + Network in one DC servo module.
  • MX series is a new concept of DYNAMIXEL with advanced functions like precise control, PID control, 360 degree of position control and high speed communication.

ROBOTIS recommends you to purchase the new and improved type of DYNAMIXELs with the aluminum front case.

(MX-28AT, MX-28AR, MX-64AT, MX-64AR)

Some strong points of using aluminum type case are:

1) Precisely designed and specially processed Aluminum front case

2) Decreased noise and improved protection against heat

3) Front screw threads are already threaded for easy bolt assembly

4) Maintains same dimensions as th existing DYNAMIXEL M-series (option frames are compatible)


  • Advanced durability, degree of precision, and wider control zone were achieved thanks to newly applied CONTACTLESS ABSOLUTE ENCODER
  • 360 degrees POSITION CONTROL without dead zone
  • 4,096 PRECISE RESOLUTION by 0.088 degrees
  • Reliability and accuracy were advanced in the position control through PID CONTROL
  • High baud rate up to 4.5Mbps
  • RS-485 level communication



Description Qty
HORN RX28 HN07-N101 1
WASHER Thrust Washer 1
CABLE 4P Cable 200mm 1
BOLT/NUT Wrench Bolt M2.5*6 16pcs
Wrench Bolt M2.5*8 1
Wrench Bolt M2*3 10pcs
Nut M2.5 18pcs





Product name DYNAMIXEL MX-28R
Weight 72g
Dimension 35.6mm x 50.6mm x 35.5mm
Gear Ratio 193 : 1
Operation Voltage (V) 10 12 14.8
Stall Torque (N.m) 2.3 2.5 3.1
Stall Current (A) 1.3 1.4 1.7
No Load Speed (RPM) 50 55 67
Motor Maxon Motor
Minimum Control Angle About 0.088 degrees x 4,096
Operating Range Actuator Mode : 360 degrees

Wheel Mode : Endless turn

Operating Voltage 10~14.8V (Recommended voltage : 12V)
Operating Temperature -5C ~ 80C
Command Signal Digital Packet
Protocol Half duplex Asynchronous Serial Communication

(8 bit, 1 stop, No Parity)

Link (physical) RS-485 Multi Drop Bus

(daisy chain type connector)

ID 254 ID (0~253)
Baud Rate 8000bps ~ 4.5Mbps
Feedback Functions Position, Temperature, Load, Input Voltage, etc.
Material Case : Engineering Plastic

Gear : Full Metal

Position Sensor Contactless Absolute Encoder by AMS
Default ID #1 –  57600bps

** After purchase, please change ID and baud rate according to your use.


■ Hyperlinks

Frame, Horn, Bearing Compatible Chart : Click Here

Controller Compatibility Chart : Click Here

Download Drawing : Click Here

Dynamixel SDK : Click Here

Software RoboPlus (R+): Click Here

Link to e-Manual : Click Here

Payment information
Payment description Original Price (HKD) Total Price(HKD) Services Fee(HKD)
Direct bank transferHK$2,200.00HK$2,200.00HK$0.00
Cheque paymentsHK$2,200.00HK$2,200.00HK$0.00
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