SIASUN Medium-Payload Industrial Robot (SR25A-20/1.80)

On a crowded production floor, the most valuable space is often the space nobody uses: the area above the conveyor, the line or the fixture. The SIASUN Medium-Payload Industrial Robot (SR25A-20/1.80) is built for planners who want that space back. It mounts upright on the floor or inverted overhead, carries 20 KG at the flange and covers a maximum working radius of 1,803 mm. Its six degrees of freedom bring the tool to the work from whichever direction the cell layout allows, rather than forcing the layout to suit the robot.

Robots Europa, based in Dublin, supplies the SR25A-20/1.80 to customers throughout the European Union and the DACH region. Robots Europa prepares the quotation, arranges delivery to your site and remains your point of contact for technical questions and support after installation. Whether you are a system integrator specifying a new cell or a manufacturer automating a single process, Robots Europa handles the commercial and logistical side so that your engineering team can concentrate on the application.

Background

SIASUN and its place in industrial robotics

SIASUN is one of the pioneers of industrial robot development in China. Its robots are used across a wide range of sectors, including automotive, construction machinery, new energy, 3C (computers, communications and consumer electronics), pharmaceuticals, education and scientific research. That breadth matters to a buyer. A manufacturer whose machines serve both high-volume automotive plants and university laboratories has to design for very different users, from experienced production engineers to students programming their first robot.

The SIASUN industrial robot portfolio spans payload capacities from 4kg to 500kg. The SR25A-20/1.80 sits in the medium segment of that range, where most general-purpose cell work takes place: loads that are too heavy or too repetitive for manual handling, yet do not call for the footprint and infrastructure of a heavy-duty arm. You will find the wider SIASUN offering in our Industrial Robots category.

Positioning within the SR25A family and the SRC E5 controller

The SR25A designation covers several versions, each defined by its own combination of payload and reach: SR25A-20/1.80, SR25A-12/2.01, SR25A-25/1.80 and SR25A-35/1.80. The suffix identifies the configuration, and the figures on this page belong to the SR25A-20/1.80 alone. The SR25A-20/1.80 offers a balance of reach and load that suits cells where the robot must reach across a fixture or pallet while still handling a substantial gripper or workpiece.

Motion is governed by the SRC E5 controller, which is integrated with the arm. The controller provides precise control of the six axes and is designed for straightforward integration into automated workflows, which is where much of the real effort in a robot project lies. A robot is only as useful as its ability to communicate with conveyors, sensors, safety systems and the line controller around it.

Technical Specifications

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

The manufacturer has not published the weight, the IP rating, the axis speeds, the axis motion ranges, the wrist moment and inertia, the package contents or the operating temperature; Robots Europa confirms these details with the quotation.

What does CE certification mean for the SR25A-20/1.80 in Europe?

For a European buyer, CE marking is not a formality. The SR25A-20/1.80 has obtained CE certification under the EU Machinery Directive and the Electromagnetic Compatibility Directive. The Machinery Directive addresses the safety of the machine itself, while the EMC Directive concerns its electromagnetic behaviour: that it neither emits unacceptable interference nor is unduly affected by the electrical environment of a factory.

In practice, this gives integrators and plant operators a documented starting point for their own conformity work. A robot arm is normally one component of a larger robot cell, and the integrator remains responsible for assessing the complete installation, including guarding, safety controls and the end effector. Starting with an arm that already carries CE certification under both directives removes one significant open question from that process. SIASUN obtained this certification for the SR25A-20/1.80 alongside other models, including the SR25A-12/2.01, which indicates a deliberate effort by the manufacturer to serve the European market.

Why choose a robot that mounts both upright and inverted?

Most cell layouts are a compromise between the reach the robot needs and the floor space the plant can spare. A floor-mounted arm occupies ground that could otherwise hold fixtures, buffers or walkways. Because the SR25A-20/1.80 supports both upright and inverted installation, the same model can stand on a pedestal in one cell and hang from a frame or gantry in the next.

Inverted mounting changes the geometry of the work envelope. With the arm reaching downwards, the 1,803 mm working radius can cover a work area below the robot without its base taking up space among the equipment. Combined with six degrees of freedom, this allows the tool to approach parts from above at the angles that welding, assembly or picking tasks require. The ±0.05 mm repeatability means the robot returns to taught positions consistently, which matters equally whether it is placing components or following a weld seam. The 3 KVA power capacity is a useful figure for early planning of the electrical supply to the cell.

Who is the SIASUN SR25A-20/1.80 for?

The SR25A-20/1.80 is aimed first at system integrators building cells for assembly, welding, palletising and material handling. For them, the combination of CE certification, an integrated controller and flexible mounting reduces the number of variables in a project.

It also suits manufacturers automating a first or second process in-house: a welding station, an end-of-line palletising cell or a machine loading task where a medium payload and a long reach are needed together. Small and medium-sized enterprises in particular benefit from a single model that can be redeployed in a different orientation when production changes.

Educational institutions and research groups form a third segment. SIASUN robots are already used in education and scientific research, and an industrial-grade arm gives students and researchers experience with the kind of equipment they will encounter in industry.

Where the application calls for a different balance of reach and payload, a sibling version may be the better choice. Buyers should compare the SIASUN Industrial Robot Arm with 2010mm Reach, 12kg Max Payload, 6 DOFs (SR25A-12/2.01) and the SIASUN Industrial Robot Arm (SR25A-25/1.80) against their requirements. Robots Europa will gladly help you match the version to the task.

What is the SIASUN SR25A-20/1.80 used for?

1. Assembly: placing and joining components with consistent positioning from cycle to cycle.
2. Welding: guiding a welding torch along repeatable paths in fixed or overhead cells.
3. Palletising: stacking cartons, bags or parts onto pallets at the end of a production line.
4. Material handling: transferring workpieces between conveyors, fixtures and storage positions.
5. Overhead cells: working from an inverted mounting to free floor space beneath the robot.
6. Training and research: providing an industrial-grade platform for teaching automation and conducting robotics research.

Pricing and Availability

The SR25A-20/1.80 is supplied on the basis of an individual quotation, as the final configuration depends on your application, the controller set-up and any accessories your cell requires. Robots Europa reviews your requirements and confirms the specifications against the manufacturer's datasheet before issuing the offer. Delivery, customs and support are arranged together with the quotation, so that you receive a single, clear proposal for your site in the EU or the DACH region. To begin, please send us details of your application using the quotation request available on this page.

Frequently Asked Questions

What payload can the SR25A-20/1.80 handle?

The SR25A-20/1.80 has a payload capacity of 20 KG. This capacity must cover the gripper or tool as well as the workpiece itself, so please share your end-effector details when you request a quotation.

What is the working radius of the SR25A-20/1.80?

Its maximum working radius is 1,803 mm. This reach allows it to cover larger fixtures and pallet areas from a single mounting position.

Which controller does the robot use?

The SR25A-20/1.80 is integrated with the SRC E5 controller. The controller provides precise motion control and is designed for integration into automated workflows.

Can the robot be mounted upside down?

Yes. The SR25A-20/1.80 supports both upright and inverted installation, which makes it adaptable to a wide range of cell layouts.

Is the SR25A-20/1.80 CE certified?

Yes. It has obtained CE certification under the EU Machinery Directive and the Electromagnetic Compatibility Directive. The integrator remains responsible for the conformity of the complete robot cell.

What are the IP rating and weight of the robot?

The manufacturer has not published these figures. Robots Europa confirms them, together with the other unpublished specifications, at quotation.

Where can I buy the SIASUN SR25A-20/1.80 and what does it cost?

You can obtain the SR25A-20/1.80 from Robots Europa, which supplies customers across the EU and the DACH region. Pricing is provided by individual quotation, based on your configuration and delivery requirements.

Summary

The SR25A-20/1.80 is a robot for planners who refuse to waste space. It stands on the floor or hangs overhead, carries 20 KG across a working radius of 1,803 mm and repeats its positions to ±0.05 mm, all under the control of the SRC E5. CE certification under the Machinery and EMC Directives gives European integrators a solid foundation for their own conformity work, and SIASUN's long experience in industrial robotics stands behind the design. For assembly, welding, palletising and material handling, it offers a well-balanced medium-payload option, with sibling versions available where a different balance of reach and load suits the task better. If you are planning a cell and want Robots Europa to quote, deliver and support the right robot for it, this page is the starting point.