DOBOT MG400 Review: Specs, Price and Applications of the Desktop Robot Arm
Updated: 2 days ago

The DOBOT MG400 is a 4-axis desktop robot arm with a payload of 500 g, a working radius of 440 mm and ±0.05 mm repeatability, listed from USD 2,600. This review covers its full specifications, design, programming options, applications and price, so you can decide whether it fits your automation project.
Quick Verdict
The DOBOT MG400 is a 4-axis desktop robot arm with a rated payload of 500 g (750 g maximum), a 440 mm working radius and ±0.05 mm repeatability. It is designed for light bench-top automation such as small-part pick and place, sorting and dispensing in tight spaces. The arm weighs 8 kg, mounts on a desktop with a 190 mm × 190 mm footprint, and has the controller and servo drives integrated in the base. It communicates over TCP/IP and Modbus TCP. It is listed from USD 2,600.
DOBOT MG400 at a Glance
Payload: 500 g
Working radius: 440 mm
Axes: 4
Repeatability: ±0.05 mm
Weight: 8 kg
Price: from USD 2,600
DOBOT MG400 Technical Specifications
The table below lists the published specifications of the DOBOT MG400.
Specification | DOBOT MG400 |
Manufacturer | DOBOT |
Model | MG400 |
Robot type | 4-axis desktop robot arm |
Payload | 500 g |
Working radius | 440 mm |
Axes | 4 |
Repeatability | ±0.05 mm |
Controller | Integrated in the base |
Interfaces | TCP/IP, Modbus TCP |
Starting price | From USD 2,600 |
Detailed Technical Data
4 axes
Rated payload 500 g
Max. payload 750 g
Working radius 440 mm
Repeatability ±0.05 mm
Weight 8 kg
Max. joint speed 300°/s
Footprint 190 mm × 190 mm
Desktop mounting
Power 100-240 V AC, 150 W
TCP/IP, Modbus TCP
Design and Build Quality

The MG400 is a desktop arm with the controller integrated in the base, sized to sit on a workbench. Published build data for the MG400: weight 8 kg; footprint 190 mm × 190 mm; desktop mounting; power 100-240 V AC, 150 W.
Programming and Software
DobotStudio Pro
The MG400 is programmed in DobotStudio Pro, which offers graphical block programming for beginners and script programming for advanced users. Positions can also be taught by guiding the arm by hand.
Industrial Communication
Published interfaces are TCP/IP and Modbus TCP.
DOBOT MG400 Applications and Use Cases
Typical applications for the MG400 are machine tending, palletizing, screwdriving, welding, lab automation and education.
Bench-Top Pick and Place

The MG400 moves small parts between trays, feeders and fixtures on a workbench.
Sorting and Dispensing
The arm suits light sorting, glue dispensing and similar repetitive bench tasks.
Education and Training
A low price and a compact size make the MG400 a common choice for classrooms and training labs.
DOBOT MG400 Price and Value
The DOBOT MG400 is listed from USD 2,600 on All Things Cobots. End effectors, safety equipment and integration affect the final price and are quoted separately. Prices are indicative, are not final and may change.
Pros and Cons
Pros
500 g payload with a 440 mm working radius
±0.05 mm repeatability
Controller integrated in the base
Cons
The 500 g payload includes the gripper and tooling
End effectors, safety equipment and integration are quoted separately
Who Should Buy the DOBOT MG400?
The DOBOT MG400 fits schools, labs and small workshops that need a low-cost desktop arm.
See the full DOBOT MG400 product listing on All Things Cobots.
DOBOT MG400 FAQ
How much does the DOBOT MG400 cost?
The DOBOT MG400 is listed from USD 2,600 on All Things Cobots. The price is indicative and may change, and it does not include end effectors, safety equipment or integration.
What is the payload and working radius of the DOBOT MG400?
The MG400 has a payload of 500 g and a working radius of 440 mm.
How accurate is the DOBOT MG400?
Its published repeatability is ±0.05 mm.
How many axes does the DOBOT MG400 have?
The MG400 has 4 axes.
How is the DOBOT MG400 programmed?
It is programmed in DobotStudio Pro with graphical block programming or scripts, and positions can be taught by hand guiding.
How much does the DOBOT MG400 weigh?
Published weight 8 kg.
What is the DOBOT MG400 used for?
Typical applications are machine tending, palletizing, screwdriving, welding, lab automation and education.
Specifications and prices are based on manufacturer and distributor information. Prices are indicative, are not final and may change.





