SIASUN Industrial Robot Arm with 2010mm Reach, 12kg Max Payload, 6 DOFs (SR25A-12/2.01)

Most welding robots fight their own cables. The SIASUN Industrial Robot Arm with 2010mm Reach, 12kg Max Payload, 6 DOFs (SR25A-12/2.01) takes a different route: it pulls the cable and the wire feeder inside the machine, so the arm can work deep in a fixture without dragging a hose package behind it. That one design choice shapes everything else about how this robot is used.

The product is available through this page, by quotation.

Background

SIASUN and the SR25A family

SIASUN is an industrial robot brand whose arms are used across heavy industry. The SR25A-12/2.01 belongs to a family in which several versions share one design language and differ in payload and reach. Related versions include SR25A-25/1.80, SR25A-35/1.80 and SR12A-12/1.46.

This model is a successor design. Compared with the previous generation, the robot is 25% lighter, repeat positioning accuracy is up by 40%, and operational efficiency is up by 67%. The weight saving comes from a special casting process using automotive engine-grade aluminum alloy.

What sets the design apart

Three ideas define this arm. The first is a streamlined, hollow bow-arm design that significantly reduces interference with workpieces. That helps the robot work in a more compact layout and gives cell designers more flexibility.

The second is a built-in welding cable system. Because the cable runs inside the arm, it avoids external wear, which improves wire feeding stability and broadens the range of welding tasks.

The third is the wire feeder, which is compactly integrated into the robot body. It also supports wire feeding stability. Together, these features make the SR25A-12/2.01 a robot built around arc welding and similar process work, while it remains a general-purpose six-axis arm.

The robot supports multiple installation modes, so it can be adapted to work in confined spaces. For fabricators in the Caribbean, where shop floors are often tight and shared between several jobs, that adaptability matters.

Technical Specifications

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

The manufacturer has not published the weight, the maximum joint speeds, the axis motion ranges, the power supply voltage, the operating temperature range, the included accessories or the wrist moment and inertia ratings; they are confirmed at quotation.

What makes the SR25A-12/2.01 different from a conventional welding robot arm?

A conventional arc-welding setup often carries the torch cable and wire feed outside the arm. In a deep or crowded fixture, that external package is the part most likely to snag, wear and disturb the wire feed. Over months of production, cable wear becomes a maintenance item and a source of unplanned stops.

The SR25A-12/2.01 moves that problem inside the machine. The built-in welding cable system prevents external wear, and the integrated wire feeder sits compactly in the robot body. Both features serve better wire feeding stability. For a welding buyer, steadier wire feed means more consistent seams from one part to the next.

The hollow bow-arm shape adds a second advantage. Because it reduces interference with workpieces, the arm can reach into the part instead of working around it. That allows tighter cell layouts, which is useful where floor space is limited.

The reach of 2010mm, with a 12 kg (26.5 lbs) payload, places the robot in the class where a welding torch, a sensor and a small tool set all fit comfortably within the rating. The IP65 rating at the wrist is also worth noting, because the wrist is the part closest to the process, where spatter, dust and moisture are most likely to reach.

How does it compare with the previous generation?

Three comparisons stand out: weight down by 25%, repeat positioning accuracy up by 40%, and operational efficiency up by 67%. The weight figure is helped by the aluminum alloy casting process mentioned above. A lighter arm puts less load on the mounting structure, which matters when the robot is installed on a gantry, a riser or a fabricated stand.

The repeatability of ±0.07mm is the absolute figure behind the accuracy improvement. In welding and assembly, it determines how closely the tool returns to a taught point after thousands of cycles.

Who is the SR25A-12/2.01 for?

The first group is heavy fabricators: shops making machinery, frames, structures and vessel components, where long seams and bulky workpieces call for a long reach. The second is shipbuilding and railway vehicle production, where parts are large and access is awkward. The third is automotive manufacturing and its suppliers, where repeatable motion and compact layouts count.

Integrators will also find the arm a good base for a welding cell, because the cable and wire feeder are already part of the robot body. That reduces the amount of external routing they need to design.

If your application suits a different reach in the same 12 kg payload class, compare the SIASUN SR12A-12/1.46. If your parts are heavier, the SIASUN SR25A-25/1.80 belongs in the comparison. You can also browse the wider Robot Arms category.

What is the SR25A-12/2.01 used for?

1. Arc welding. The built-in cable system and integrated wire feeder are aimed at stable wire feeding on long or deep seams.
2. Heavy machinery fabrication. The long reach and compact arm shape suit large frames and welded assemblies.
3. Shipbuilding work. The arm can be installed in several ways, so it can work in confined spaces typical of hull sections and blocks.
4. Automotive manufacturing. Repeatability of ±0.07mm supports consistent positioning from cycle to cycle.
5. Railway vehicle production. Large workpieces and awkward joints benefit from the reduced interference of the hollow bow-arm.
6. Handling and assembly support. A 12 kg (26.5 lbs) payload covers tooling plus parts in loading, unloading and similar tasks.

Pricing and Availability

We do not publish prices on this page. Quotation is the next step: tell us your application, the process equipment you plan to fit and your site, and we prepare an offer. Delivery, customs and support are arranged with the quotation. The SIASUN SR25A-12/2.01 is available on this page.

Frequently Asked Questions

What is the payload and reach of the SR25A-12/2.01?

The payload is 12 kg (26.5 lbs) and the reach is 2010mm. The robot has six degrees of freedom.

How accurate is the robot?

Repeatability is ±0.07mm. Repeat positioning accuracy is also 40% higher than in the previous generation.

Is the robot protected against dust and water?

The wrist is rated IP65. That is the part of the arm closest to the welding process.

Which controller does it use?

The controller model is SRC E5, with a power capacity of 3 KVA.

Does it support welding without external cables?

Yes. The welding cable system is built in and the wire feeder is integrated into the robot body. This prevents external wear and supports wire feeding stability.

Can it work in confined spaces?

Yes. The robot supports multiple installation modes and is adaptable to operations within confined spaces. The hollow bow-arm design also reduces interference with workpieces.

Where can I buy the SR25A-12/2.01 and what does it cost?

You can request it through this page. The cost depends on your configuration and destination, so we answer with a quotation rather than a list price.

Summary

The SR25A-12/2.01 answers a familiar problem in welding cells: cables and feeders that fight the robot. By moving both inside the arm and shaping the arm to stay clear of the workpiece, SIASUN gives fabricators a long-reach robot that works close to the job. With a 12 kg (26.5 lbs) payload, 2010mm reach, ±0.07mm repeatability and an IP65 wrist, it serves heavy machinery, shipbuilding, automotive and railway work. If you want to see how it fits your cell, this page is the starting point.