The MG400 Robotic Arm is a lightweight desktop robot with a footprint smaller than a piece of A4 paper. Engineered to be lightweight, user-friendly, and safe, MG400 can be easily integrated into any production line or lab bench, making it universally accessible and affordable.
Commercially Available Industrial-Grade Performance
Professional Hardware: MG400 has a controller design based on Linux real-time system, and makes use of the most advanced 1-to-4 servo drive technology.
High Precision: All axes use low-voltage DC servo motors with high-precision absolute position encoders and mechanical transmission parts with low backlash. All these put MG400 in a superior position to produce repeatability up to ±0.05mm.
Born for Desktop Application Scenarios
MG400 is designed with small-scale production in mind. With a 190 x 190 mm (7.48 x 7.48 inches) footprint, the robot is lightweight enough to carry in a backpack and compact enough to sit on a desk or workbench as well as alongside an existing production line or cell, offering you full flexibility across your business.
Inherently Safe: So Gentle It Can’t Even Hurt a Balloon
With safety as its core, MG400 adopts an advanced collision detection algorithm with a collision force threshold less than 12N. The robot stops immediately when it touches an obstacle, putting it in the same league as the world’s best robots.
Vibration Suppression Algorithm: Fulfill Tasks Smoothly & Steadily
The adopted vibration suppression algorithm increases repeatability bandwidth stability by 60% and reduces residual vibration by 70% without affecting the space trajectory accuracy of multi-axis motion. This means that the robot’s tool will move more steadily without jittering, ensuring smooth execution of tasks.
TrueMotion Algorithm for Applications Requiring High-Accuracy Trajectory
MG400 leverages TrueMotion Algorithm, a DOBOT-developed technology featuring speed planning and dynamic algorithm. This allows the robot to deliver accurate trajectories at stable speeds, thus excelling in tasks like dispensing.
Teaching MG400 is as Easy as Moving Your Own Hand
With the dynamic gravity compensation algorithm adopted in the robot, first-time users can effortlessly move the robot wherever they like. MG400 will be able to move to these taught with best-in-class precision.
Multiple Controls for Beginners & Professionals
MG400 is programmable through teaching and playback, block program, and LUA scripting, suitable for beginners with no programming experience and veteran programmers alike.
10 Minutes to Get MG400 Up and Running
Install the robot on your workbench, plug-in power, and connect to your PC using an Ethernet cable or to your tablet via Wi-Fi. Lastly, open up our software and the MG400 is ready to go.
Open Ecosystem for Compatibility, Expandability & Scalability
MG400 is compatible with a range of other technologies, making it suitable for advanced and complex applications. With the support of TCP/IP and MODBUS TCP, the robot can be connected to a wide range of technologies.
Core Highlights
Ultra-Small Desktop Collaborative Robot
MG400 is an ultra-small desktop collaborative robot with an integrated controller and robot body design. Its base size is 190 × 190 mm, occupying less space than an A4 sheet of paper, making it suitable for compact desktops, workbenches, and small automation stations.
Professional Precision Performance
MG400 is equipped with high-precision absolute encoders, servo drives, and a controller, achieving repeatability of up to ±0.05 mm. Its controller uses a vibration suppression algorithm to improve stabilization performance and reduce residual vibration while maintaining multi-axis trajectory accuracy.
Hand-Guided Teaching
MG400 supports hand-guided teaching and trajectory reproduction. Users can manually guide the robot arm to record motion paths and allow the robot to repeat the task. With dynamic gravity compensation, the teaching process is designed to be smoother and more efficient.
Multiple Programming Options
MG400 supports trajectory reproduction, graphical programming, and Lua script programming for automation tasks of different complexity levels and users with different programming experience.
Collision Detection for Collaborative Work
MG400 features collision detection and can be used to replace repetitive and standardized processes in desktop collaborative applications.
Technical Specifications
| Product Name | MG400 | |||||||
| Product Model | DT-MG400-4R075-01 | |||||||
| Number of robot axes | 4 | |||||||
| Payload | 500g (Max 750g) | |||||||
| Reach | 440mm | |||||||
| Repeatability | ±0.05mm | |||||||
| Range of joint motion | J1 | ±160° | ||||||
| J2 | -25° – 85° | |||||||
| J3 | -25° – 105° | |||||||
| J4 | -360° – 360° | |||||||
| Max. Speed of Joints | J1 | 300° /s | ||||||
| J2 | 300° /s | |||||||
| J3 | 300° /s | |||||||
| J4 | 300° /s | |||||||
| Power Supply | 100-240 VAC, 50/60 Hz | |||||||
| Rated Voltage | 48V | |||||||
| Rated Power | 150W | |||||||
| Communication | TCP/IP, Modbus TCP | |||||||
| Installment | Table Installation | |||||||
| Weight | 8kg | |||||||
| Base Size | 190mm × 190mm | |||||||
| Working Environment | 0 ℃ -40 ℃ | |||||||
| Application Software | DobotStudio 2020, SCStudio | |||||||
Applicable Industries
| SMT Pick Place | Pharma Lab | Hand Teaching | Ultra Compact A4 |
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| Precision Assembly | Food Packaging | Vision Inspection | Glue Dispensing |
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FAQ
Q1: What industries and applications is the MG400 suitable for?
The MG400 is designed for diversified lightweight desktop automation across multiple industries:
•Electronics & Semiconductors: SMT pick-and-place, PCB handling, glue dispensing, soldering assist
•Medical & Pharma: Lab sample handling, vial placement, liquid dispensing, reagent sorting
•Food & Beverage: Small-pack sorting, tray loading, product orientation
•3C Assembly: Screw fastening, component insertion, quality inspection with vision
•Research & Education: University robotics labs, STEM courses, Industry 4.0 training
•Cosmetics: Filling, capping, and sorting for small-batch production lines
Q2: What is the footprint of the MG400 and why does it matter?
The MG400 has a base size of only 190mm × 190mm — smaller than a standard A4 sheet of paper. This compact footprint means it can be integrated into virtually any existing workspace without requiring layout modifications or dedicated floor space. The controller is built directly into the arm body (no separate cabinet needed), further reducing installation complexity and cabling requirements.
Q3: How precise is the MG400 and what ensures its accuracy?
The MG400 achieves a repeatability of ±0.05mm — industrial-grade precision for a desktop-class robot. This is achieved through: (1) High-precision absolute encoders built into each servo motor for zero-loss power-off position memory. (2) A self-developed servo drive and controller with proprietary vibration suppression algorithm that accelerates stabilization time by 60% and reduces residual vibration by 70%. (3) Multi-axis trajectory interpolation ensuring smooth, accurate coordinated motion across all 4 axes.
Q4: What programming options does the MG400 support?
The MG400 supports three programming modes to accommodate different skill levels and use cases:
•Trajectory Reproduction (Drag Teaching): Physically guide the arm to desired positions. Combined with robot gravity compensation, teaching time is reduced by over 80% versus conventional methods.
•Graphical Programming: DobotStudio Pro’s Blockly-based drag-and-drop interface — no code required, ideal for operators new to robotics.
•Script Programming: Lua scripting for complex logic, loops, and conditional operations.
For advanced developers: full TCP/IP and Modbus TCP API support, Python SDK, ROS package, and C/C++ interface are available. Open-source SDK is free to download from the DOBOT developer portal.
Q5: Is the MG400 safe to use alongside human workers?
Yes. The MG400 features a built-in collision detection function that monitors for unexpected contact force and immediately stops or reduces arm speed upon detection. This allows the MG400 to operate as a true desktop cobot — sharing the same workstation with human workers without safety fencing. The lightweight 8kg body and compact design further reduce risk. Note: for specific safety certification requirements by region, please consult your local integrator.
