SIASUN SR25A-25/1.80 (SR25A-25/1.80)

Upgrades in industrial robotics seldom arrive as a single headline figure. More often they show up in the parts of an arm that a buyer only appreciates after months on the line: how the wrist is built, where the cables run, and how quickly a joint can be returned to its reference after maintenance. The SIASUN SR25A-25/1.80 (SR25A-25/1.80) is SIASUN's upgraded iteration of its 20 kg-class robot, and its changes sit precisely in those places. It has a redesigned fourth-to-sixth axis structure, a hollow arm with internal cable routing and a calibration groove at every joint, all on an arm that carries a 25 kg payload across a reach of 1803mm.

Robots Middle East supplies the SIASUN SR25A-25/1.80 to manufacturers, system integrators and technical institutions across the Middle East. Our team prepares each quotation around the application in question, coordinates delivery to your site and remains your point of contact for technical support once the robot is in production.

Background

SIASUN and its industrial robot range

SIASUN is a Chinese robotics manufacturer. Its industrial robot programme spans a wide spread of payload classes, from compact arms for welding and handling to heavy-payload models built for large workpieces. The SR25A-25/1.80 belongs to the Small Payload segment of that programme, which forms part of the wider family of SIASUN industrial robots. For a buyer, a broad range from one manufacturer offers continuity. An integrator who standardises on a single brand can share programming knowledge, spare-parts planning and service routines across cells of quite different sizes, and can grow a production line without retraining staff on a new platform.

An upgraded 20 kg-class design

SIASUN describes the SR25A-25/1.80 as an upgraded iteration of its 20 kg-class product. The central change is the redesigned fourth-to-sixth axis structure. This is the wrist and forearm group that decides how a tool approaches a workpiece, and SIASUN developed it so that the robot adapts to a broader range of application scenarios and industries. The arm is produced by a special casting process in automotive engine-grade aluminium alloy, and its hollow construction carries the cabling internally. The J5 and J6 axes each offer a motion range of ±180°, which lets the tool reorient freely without the whole arm having to reposition.

Technical Specifications

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

The manufacturer has not published the robot's weight, power supply, axis speeds, controller model, wrist moment and inertia ratings, operating temperature, package contents or CE certification status; these are confirmed at quotation.

What does the redesigned wrist change in practice?

On many robot arms, the cables and hoses that feed the tool run along the outside of the arm. In a busy cell they can snag on fixtures, wear against the arm itself and limit how far the wrist can turn before the dress pack is pulled tight. The SR25A-25/1.80 routes its cabling through a hollow arm. SIASUN states that this design reduces interference while improving structural stiffness and safety, two qualities that matter most when a tool has to follow a path closely, cycle after cycle.

The wrist itself is rated IP65. Under the IEC protection code, this means it is dust-tight and protected against water jets. That rating applies at the end of the arm, which is where weld spatter, coolant and polishing dust collect. Together with the ±180° range on J5 and J6, the wrist can reach awkward angles on a part while remaining protected from the debris the process creates.

Maintenance is the third part of the argument. Each joint has its own zero-position calibration groove, and a dedicated tool is used to bring the joint back to precise zero-position alignment. After a motor replacement, a collision or a routine service, this gives technicians a defined mechanical reference to work from, rather than relying on estimation. With a repeatability of ±0.05mm, restoring that reference accurately is what keeps existing programmes valid.

Can the SR25A-25/1.80 be used for laser welding and surface polishing?

Yes. SIASUN offers two packaged kit systems that name this robot directly. The laser welding kit system lists the SR25A-25/1.80 as one of its robot types, alongside the SIASUN SR12A-12/1.46. The grinding kit system is built on the SR25A-25/1.80 and uses an independent three-head force-controlled tool for surface polishing.

Both processes reward the qualities described above. Laser welding depends on a torch path that is repeated faithfully from part to part, and polishing depends on a wrist that can present a force-controlled head to curved surfaces while operating in an abrasive environment. Starting from a kit system rather than a bare arm can also shorten the engineering effort on an integration project. Robots Middle East can advise whether a kit or a bespoke cell better suits your parts and production volumes.

Who is the SIASUN SR25A-25/1.80 for?

The first group is system integrators who build welding, finishing and handling cells for manufacturers in the region. For them, the choice between floor mounting and ceiling mounting gives real layout freedom. A ceiling-hung arm leaves the floor clear for fixtures, conveyors and operator access, and SIASUN positions the robot for tasks with small turning radii and confined spaces.

The second group is manufacturers of metal components, including automotive suppliers, fabricators and producers of fittings and housings. These buyers need a mid-size arm that can weld, deburr or polish without an extensive dress-pack arrangement. The cast aluminium alloy structure and IP65 wrist suit plants where the process itself is dirty.

The third group is technical colleges, training centres and research laboratories. They benefit from an arm that demonstrates current industrial practice in cable management, calibration and force-controlled finishing.

Where a project calls for a different balance of payload and reach, the SR25A family also includes the SIASUN SR25A-12/2.01 and the SIASUN SR25A-35/1.80. Robots Middle East can set their manufacturer figures side by side with those of the SR25A-25/1.80 when preparing your quotation.

What is the SIASUN SR25A-25/1.80 used for?

1. Laser welding: deployed as a listed robot type in SIASUN's laser welding kit system for repeatable seam work.
2. Surface polishing: the basis of SIASUN's grinding kit system with its independent three-head force-controlled tool.
3. Grinding and deburring: finishing cast and machined parts, where the protected wrist works close to abrasive debris.
4. Material handling: moving parts between conveyors, fixtures and stations within the robot's reach.
5. Machine tending: loading and unloading machine tools in cells where floor space around the machine is limited.
6. Ceiling-mounted operation: working overhead in confined cells, keeping the floor free for tooling and people.

Pricing and Availability

Robots Middle East quotes the SIASUN SR25A-25/1.80 for each project, because the final configuration depends on mounting, tooling, kit systems and the scope of integration. Delivery, customs clearance and after-sales support are arranged together with your quotation. To receive a quotation prepared for your application, please use the enquiry form available on this page.

Frequently Asked Questions

What payload does the SIASUN SR25A-25/1.80 handle?

The SR25A-25/1.80 has a payload of 25 kg (55.1 lbs).

What is the reach of the SR25A-25/1.80?

The robot has a reach of 1803mm and a repeatability of ±0.05mm.

Can the robot be mounted on the ceiling?

Yes. It can be floor-mounted or ceiling-hung, which suits tasks with small turning radii and installations in confined spaces.

Is the wrist protected against dust and water?

Yes. The wrist is rated IP65, and the hollow arm routes its cables internally, away from the working area.

Which controller is supplied with the SR25A-25/1.80?

SIASUN has not published the controller model for this robot. Robots Middle East confirms the controller, power supply and package contents with your quotation.

Is the SR25A-25/1.80 suitable for laser welding and polishing?

Yes. It is listed as a robot type for SIASUN's laser welding kit system, and it forms the basis of the grinding kit system with an independent three-head force-controlled tool for surface polishing.

Where can I buy the SIASUN SR25A-25/1.80 and what does it cost?

You can buy the SR25A-25/1.80 from Robots Middle East, which supplies customers throughout the Middle East. The cost depends on your configuration and integration scope, so we provide it in a quotation prepared for your project.

Summary

The SIASUN SR25A-25/1.80 shows what a well-judged upgrade looks like. Rather than relying on one headline figure, it improves the details that decide day-to-day performance. The redesigned fourth-to-sixth axis structure, the ±180° J5/J6 range, the IP65 wrist, the internal cable routing and the per-joint calibration grooves all serve a robot that has to work in tight, dirty cells for years. It does so on a 25 kg payload, a reach of 1803mm and a repeatability of ±0.05mm, with dedicated SIASUN kit systems for laser welding and surface polishing. Robots Middle East quotes, delivers and supports it across the region, and for anyone planning a cell around it, this page is the starting point.