WidowX 250 Robot Arm with 6 DoF and 250g payloads

2.400,002.490,00 ex vat

WidowX 250 6 Degrees of Freedom (DoF) Robot Arm is part of the WidowX range of arms from Trossen Interbotix featuring the DYNAMIXEL X-Series Smart Servo Motors.  The X-Series actuators offer higher torque, more efficient heat dissipation and better durability all at a smaller form factor over previous DYNAMIXEL servos.

DYNAMIXEL XM-430-W350T and DYNAMIXEL XL430-W250-T  servos offer the high resolution of 4096 positions and user-definable PID parameters. Temperature monitoring, positional feedback, as well as voltage levels, load, and compliance settings are also accessible to users. At the heart of the WidowX 250 6 DoF is the Robotis DYNAMIXEL U2D2 which enables easy access to DYNAMIXEL Wizard software as well as ROS.

WidowX 250 6 DoF offers six degrees of freedom, 360° of rotation and 250g payload capacity.


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WidowX 250 6 DoF is also available in a Mobile version which has a smaller form factor base making it easy to mount on a mobile platform, such as the Turtlebot. The Mobile WidowX 250 6 DoF does not come with CM9.04c or a 12v5a power supply. 

Fully tested and assembled, WidowX 250 6 DoF is constructed from highly rigid 20x20mm extruded aluminium and all aluminium brackets.  The arm sits on an industrial-grade slewing bearing for added stability and accuracy, while the electronics are covered with a transparent acrylic shield to keep them free from debris as well as from impact from the arm itself.

Industry-leading smart servos

DYNAMIXEL X-Series smart servos offer industrial level features at a fraction of the price.

  • Addressable – All servos have unique IDs allowing users to easily communicate with individual servos or group while the Shadow ID feature enables control of a second servo in dual servo joints.
  • Daisy chain – DYNAMIXEL servos are connected in a daisy chain (each servo plugged into the next in series) making them highly scalable and easy to maintain.
  • Servo management software – DYNAMIXEL Wizard 2.0 allows users to configure register settings such as PID gains, Control Modes (position, velocity, current, or PWM) and others. The software also provides tools for firmware updates, diagnostics, configuration and testing, data plotting, generating and monitoring DYNAMIXEL packets, and more.
  • Trajectory smoothing – Smart servos have multiple registers for setting velocity and acceleration limits, PID gains, and more for fine-tuning smooth joint motions.
  • Low-level libraries provided – DYNAMIXEL servos have libraries that abstract away the serial communication layer allowing developers to concentrate their time on higher-level code.

3D printed custom grippers

The X-Series gripper carriages are designed for users to quickly and easily change the gripper fingers for different projects. CAD files for the gripper are available for download and 3D printing.  Included with the arm are sticker backed foam and Sorbothane rubber, both increasing gripping strength while relieving stress on the gripper servo.

WidowX 250 6 DoF reach

XM430 DYNAMIXEL servos support up to 360° rotation resulting in an extraordinary range of motion.

WidowX 250 6 DoF offers 65cm horizontal reach from the centre of the base to the gripper and a total span of 130cm.

The working payload for the arm is 250g – this is the weight that the arm should not exceed under normal working circumstances and is measured by the arm’s ability to repeatedly lift an object at roughly half extension without failure. While the WidowX 250 can lift more than 250g it is strongly recommended that it does not.


  • XM430-W350T and XL430-W250-T servos
  • Industrial bearing base
  • Aluminium construction
  • U2D2 for onboard processing
  • Gripper with interchangeable fingers
  • Six degrees of freedom
  • 3D print custom grippers


  • Degrees of freedom – six
  • Reach – 650mm
  • Total span – 1300mm
  • Accuracy – 1mm
  • Working payload – 250g
  • Total servos – 9
  • Wrist rotate – yes


  • 7x XM430-W350-T actuators
  • 2x XL430-W250-T actuators
  • 1x 12v5a power supply
  • 1x USB2 micro cable
  • WidowX 250 hardware and frames
  • Extra gripper foam/rubber
  • Drivers / extra hardware

Additional information



Normal, Mobile

Documents and downloads


WidowX 250 6 DoF technical drawing [PDF]


OpenCM E-Manual

OpenCM IDE E-Manual

XL430-W250-T Manual

XM430-W350-T Manual

WidowX 250 Specifications

Firmware (Alpha)

ROS packages overview

Software downloads

WidowX 250 Step File

WidowX 250 Mesh/STL Files








Software control

ROSSerial over USBDynamixel SDK
OverviewPackages for Ubuntu 16.04 & ROS Kinetic / Ubuntu 18.04 & ROS Melodic Contains Meshes, URDF, Inertial values, driver node as well as Gazebo config / Moveit config and examples / demos.


The Interbotix Serial Firmware allows users who wish to use an onboard IK engine to operate a 5DOF arm through the use of serial over USB.The ROBOTIS Dynamixel SDK is a software development kit that provides Dynamixel control functions using packet communication.
Operating systemLinuxWindows / MacOS / LinuxWindows / MacOS / Linux
LanguagesC++, Python, or any other ROS compatable languages


Any language which can communicate via serial over USBC, C++, C#, Python, Java, MATLAB, LabVIEW and ROS.
ControllerDYNAMIXEL U2D2




  • MoveIt!
  • Rviz Gazebo Simulation
  • Physical Robot Control
  • Puppet Control
  • Diagnostics & Data Recording
  • PS3/PS4 Control


Windows Demo is provided allowing for control of any standard X-Series 5DOF arm. Tools are provided for users to become familiar with the Interbotix Serial ProtocolRobotis provides sample code in many languages for users to get started










Kinematics engineNorthwestern Illinois Kinematics LibraryInterbotix 5DOF IK EngineNone

Finance and Shipping

Restrictions on customers

Please note that due to the high average transaction costs, we must adhere to Anti-money laundering legislation.  For new customers, this comes into effect when the transaction value is more than £8,800 (or equivalent in USD or EUR).

Please note that some products are restricted so we typically do a brief check on location and customer information before accepting self-service orders.

Online ordering (self service)

On orders up to £8,800 (or equivalent in USD or EUR), we offer online ordering with payment by all major credit cards. Payments can be made in GBP only.

Payment options for transactions over £8,800

Please contact us to complete our ‘Know Your Customer’ form for payments in advance (by BACS or Card) above this amount, or apply for a full ‘Credit Account’ for up to 30 days credit, on account.  Payments can be made in GBP, EUR or USD.


Shipping by default is by FedEx and typically takes from one to five working days worldwide.  All packages are fully insured from us to you. 

Our incoterms are DDP (for UK customers) and DAP (for international customers, including EU).  Other incoterms may be available on request in special circumstances.

Goods can also be collected from our logistics centre. 

Loan finance

Level Five Supplies is pleased to offer finance as a payment option, iur appointed partners can work with you to make equipment purchase more straightforward.

There are many reasons to consider using finance:

  1. Improves Cash Flow: When you finance your equipment, your cash isn’t tied up in the equipment. Instead, it’s free for other investments that will grow your business, produce income, and ensure the equipment you acquire earns profits over its lifetime.
  2. Preserves Other Lines of Credit: Tomorrow can bring many opportunities. Financing equipment means you’ll have the credit available (either from the bank or other sources) to take advantage of future opportunities.
  3. Hedges against inflation: Your monthly payment remains the same over the term of the lease or loan. Money paid later in the term usually have less purchasing power than those paid at the beginning of the term…so you pay for today’s equipment needs with tomorrow’s lower-value currency.
  4. Provides 100% financing: Even “soft costs” such as training, shipping, installation, and maintenance agreements can usually be included. So you can rest easy knowing that these associated costs won’t disrupt your cash flow.
  5. Simplifies equipment changes: Hiring additional workforce? Increasing efficiency? Additional equipment can easily be added to your existing loan or lease. Or, if you’re trying to stay ahead of the competition by staying ahead of technologies, the equity in your financed equipment can be applied toward the loan or lease of new equipment. These options solve the problems of obsolescence – and make your job easier.
  6. Eliminates hidden charges: You have no compensating balances, no closing costs, and no blanket liens or other restrictive covenants that banks use to increase customers’ cost. What you see is what you get.
  7. Offers excellent rates: Our finance partner rates are highly competitive.
  8. Saves on taxes: Depending on the type of finance agreement you select, as much as 100% of your payments may be tax deductible.
  9. Offers many payment programs: Our finance partners work for you, not us. You choose the type of loan or lease that best fits your needs, and you select the length of the loan or lease term.

The finance agreement is between you and the lender, and we don’t take commission or referral fees – but we’ve done the preparatory work of allocating a broker for the US, and another for Europe, explaining the technology, validating supplier products and explaining how the technology will be used so your application process is simplified and focused entirely on the financials.

The initial part of the process usually takes less than an hour and means that you can spread the cost of a higher value purchase of equipment like this over several months or even years, allowing you to better plan your project or department budgets, but also means you can get what you need over the coming years, not just what you can afford today.

Details of current funding opportunities and support programmes for research and innovation

Contact our Sales team to discuss your needs further.  

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