Dobot Dobot MG400 (Dobot MG400)

Every automation idea begins on a bench, and too many of them stay there, because the arm used to test the idea is not the arm that can later do the work. The Dobot Dobot MG400 (Dobot MG400) narrows that gap. It is an ultra compact, desktop-grade robotic arm, small enough to share a table with a laptop, yet specified with the repeatability, network interfaces and safety functions that make it relevant to real production tasks as well as to experiments. A concept can be taught to it in the morning and left running on it in the afternoon, without moving to a different machine or a different programming environment.

Robots Middle East supplies the Dobot MG400 to universities, research groups, training centres, integrators and manufacturers across the Middle East. Robots Middle East prepares each quotation to the buyer's project, advises on configuration and integration, and arranges delivery and after-sales support for the region, so that the arm arrives ready for the task it is meant to perform.

Background

DOBOT and its desktop heritage

DOBOT is a robotics manufacturer that made its name with desktop arms for education and development, and has since extended its range into collaborative robots for industry and into humanoid and legged platforms. That lineage matters for the MG400: it is designed by a company accustomed to arms that sit beside people at a desk, which shows in its compact format, its hand-guided teaching and its approachable programming options. Buyers wishing to see the wider range can browse the Dobot category.

Positioning: a small arm with industrial habits

The MG400 occupies the space between educational desktop robots and full industrial manipulators. Its footprint is smaller than a sheet of A4 paper, it installs on a desktop, and it runs from a standard mains supply. At the same time, it offers drag-to-teach, collision detection, Modbus TCP communication and a vibration suppression algorithm, features more commonly associated with factory equipment. The result is an arm that can be used to learn, to prototype and to automate light, repetitive tasks, often by the same team.

Technical Specifications

Specifications are as published by the manufacturer and are confirmed against the datasheet at quotation.

The manufacturer has not published the ingress protection rating, the noise level, the brake details, the certifications or the package contents; these are confirmed at quotation.

What makes the Dobot MG400 different from a full-size industrial arm?

The first difference is scale. A conventional industrial manipulator usually needs a pedestal, a dedicated cell and a separate control cabinet. The MG400 stands on a base of 190 mm × 190 mm, weighs 8 kg and installs directly on a desktop, so it can be placed where the work already happens rather than where the floor plan allows. It accepts 100~240V AC at 50/60 Hz and draws 150W, which means it connects to ordinary mains power.

The second difference is how closely it can work with people. Collision detection allows the arm to respond when it meets an obstruction, and drag-to-teach lets an operator guide it by hand to record a motion. Both features reduce the distance between the person who understands the task and the robot that performs it. Whether a particular installation still requires guarding depends on the risk assessment for that application, which Robots Middle East can discuss with the buyer when preparing the quotation.

The third difference is that, despite its size, the MG400 is built for repeatable work rather than demonstration alone. A repeatability of ±0.05 mm and a working radius of 440 mm suit precise, small-part handling. DOBOT's vibration suppression algorithm increases multi-joint motion stability time by 60% and reduces residual vibration by 70%, which helps the arm settle cleanly at the end of each movement, an important quality when it places components or positions a tool.

How is the Dobot MG400 programmed and integrated?

The MG400 offers three routes to a working program. Drag-to-teach is the quickest: the operator moves the arm through the required positions and the robot records them. A graphical interface gives newcomers and students a visual way to build sequences without writing code. Lua scripting gives developers full control over logic, conditions and data handling. The manufacturer describes this combination as suitable for developers of all levels, and in practice it lets a single arm serve a classroom introduction and an engineering project alike.

Integration relies on TCP/IP and Modbus TCP. Modbus TCP is widely used in industrial control, so the arm can exchange signals with programmable logic controllers, vision systems and supervisory software already present in a facility. TCP/IP supports custom applications written by research teams and integrators. For a buyer, this means the MG400 does not have to remain an isolated device; it can become one station in a connected process.

Who is the Dobot MG400 for?

Universities and technical colleges form a natural audience. The arm's small footprint allows several units to be arranged in one teaching room, and the progression from drag-to-teach through graphical programming to Lua mirrors the way students build their skills. Research laboratories value the same openness for experiments in motion planning, machine vision and human–robot interaction.

Small and medium manufacturers are a second segment. Where a task involves light parts, short cycles and limited bench space, such as placing components, loading test fixtures or sorting small items, the MG400 offers repeatable automation without the investment in a full robotic cell. Its rated payload of 500 g, with a maximum of 750 g, should be checked against the combined weight of the tool and the part.

System integrators and product developers form a third group. They use the MG400 to build proof-of-concept cells, validate gripper designs or demonstrate an automation idea to a client before scaling up. Buyers whose tasks call for heavier loads or a longer reach than the MG400 offers should discuss alternatives with Robots Middle East, as the fact sheet for this product covers a single version only.

What is the Dobot MG400 used for?

1. Pick-and-place: moving small components between trays, feeders and fixtures with consistent positioning.
2. Robotics education: teaching kinematics, programming and automation principles on a desktop-scale arm.
3. Laboratory automation: handling sample containers and repeating routine bench steps in research settings.
4. Inspection and testing: presenting parts to cameras or test stations in a repeatable sequence.
5. Prototyping automation cells: validating tooling, layouts and process logic before investing in larger equipment.
6. Light assembly: inserting, placing and positioning small parts in electronics and consumer product work.

Pricing and Availability

Robots Middle East provides the Dobot MG400 on a quotation basis, so that the offer reflects the intended application, any required accessories and the destination of the equipment. Delivery, customs and support are arranged together with the quotation. To begin, please share a brief description of your task, the parts or tools involved and your preferred timeline; a specialist will respond with a tailored proposal. The request form for your quotation is available on this page.

Frequently Asked Questions

How many axes does the Dobot MG400 have?

The MG400 has 4 axes. The published ranges of motion are ±160° for J1, -25°~85° for J2 and -25°~105° for J3.

What payload can the MG400 handle?

The rated payload is 500 g, with a maximum of 750 g. The weight of the gripper or tool counts towards this figure.

How precise is the Dobot MG400?

Its repeatability is ±0.05 mm, and its vibration suppression algorithm reduces residual vibration by 70%.

Do I need programming experience to use the MG400?

No. Motions can be taught by hand with drag-to-teach or built in a graphical interface, while experienced developers can use Lua.

Can the MG400 connect to a PLC or factory system?

Yes. It communicates via TCP/IP and Modbus TCP, which allows integration with controllers and supervisory software.

What power supply does it require?

The arm accepts 100~240V AC at 50/60 Hz, with a rated voltage of 48V and a power consumption of 150W.

Where can I buy the Dobot MG400 and what does it cost?

You can buy the Dobot MG400 from Robots Middle East, which supplies it across the Middle East. The cost depends on your configuration and project, so please request a quotation through this page.

Summary

The Dobot MG400 is designed for the moment when an idea on the bench has to become work on the bench. It combines a footprint smaller than an A4 sheet, 4 axes, a 440 mm working radius and ±0.05 mm repeatability with drag-to-teach, collision detection and Modbus TCP connectivity. That combination allows teachers, researchers, integrators and manufacturers to move from learning to prototyping to light production on the same arm. Robots Middle East supplies, quotes and supports it across the region; for a proposal fitted to your task, this page is the starting point.