This item is not in regular stock, but can still be ordered. Read about product status here
Price: $1,249.50

    Dynamixel Datasheet Comparison Guide
    Download Our Dynamixel Datasheet/ Comparison Guide
    This is a 6 piece Bulk package of the MX-28R. In this bulk pack, the servos are bare and do not come with the required additional cables, brackets, or hardware. If you need this hardware, it must be purchased separately.

    The MX-28R Dynamixel Robot Servo Actuator is the newest generation of Robotis Dynamixel actuator; equipped with an onboard 32bit 72mhz Cortex M3, a contact-less magnetic encoder with 4x the resolution over the AX/RX series, and up to 3mpbs using the new RS-485 2.0 bus. Each servo has the ability to track its speed, temperature, shaft position, voltage, and load. As if this weren't enough, the newly implemented PID control algorithm used to maintain shaft position can be adjusted individually for each servo, allowing you to control the speed and strength of the motor's response. All MX Series servos use 12v nominal voltage, so other MX-R series Dynamixels can be mixed without having to worry about separate power supplies. All of the sensor management and position control is handled by the servo's built-in microcontroller. This distributed approach leaves your main controller free to perform other functions.

    Note: This servo is nearly identical to the MX-28T, the only difference being 4-pin RS-485 communication. If you do not have a specific preference, we recommend the MX-28T due to TTL communication being a simpler protocol.

    MX-28 Servo Documentation: MX-28 Technical Drawings & 3D Models:
    • MX-28 Dimensional Drawing (PDF)
    • MX-28 Dynamixel 3D Models (STP)
    • HN07 Series Servo Horn Drawings (DWG)
    • HN07 Series Servo Horn 3D Models (STP)
    • FR07 Series Frame Set Drawings (DWG)
    • FR07 Series Frame Set 3D Models (STP)
    Note: You can view DWG files using a free download of eDrawings Viewer. Various CAD apps support STP & DWG Files.
    MX-28R Stats
    Operating Voltage 14.8V 12V
    Stall Torque 31.6 kg·cm
    439 oz·in
    3.1 N.m
    25.5 kg·cm
    354 oz·in
    2.5 N.m
    No-load Speed 67 RPM 55 RPM
    Weight 72g
    Size 35.6 x 50.6 x 35.5 mm
    Resolution 0.088°
    Reduction Ratio 1/193
    Operating Angle 360° or Continuous Turn
    Max Current 1.4A @ 12V
    Standby Current 100 mA
    Operating Temp -5°C ~ 85°C
    Protocol RS-485 Asynchronous Serial
    Module Limit 254 valid addresses
    Com Speed 8000bps ~ 3Mbps
    Position Feedback Yes
    Temp Feedback Yes
    Load Voltage Feedback Yes
    Input Voltage Feedback Yes
    Compliance/PID Yes
    Material Metal Gears &
    Engineering Plastic Body
    Motor Maxon RE-MAX
    Manual Download MX-28 manual
    Controller List USB2Dynamixel


    The MX-28AR is a special version of the MX-28R with an aluminmun front plate. This plate acts as a heat sink, allowing for better heat dissapation, allowing the servo to run cooler. The aluminum front plate has threaded holes, allowing for easier assembly as no nuts need to be seated on the front plate. The back plate will still require nuts.

    NOTE: The MX-28AR is special order only and may take an additional 1-2 weeks to ship.

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