SIASUN SR25A-12/2.01 (SR25A-12/2.01)

A welding torch is light, but the seams it must follow seldom are. On a ship section, a railway bogie frame or the boom of a construction machine, the difficulty is rarely carrying weight. It is almost always reaching the far end of a long joint without the arm, its cables or its wire feeder fouling the work. The SIASUN SR25A-12/2.01 is built around that imbalance. It pairs a modest payload with a long reach, inside a lighter hollow arm that keeps the welding hardware clear of fixtures and parts.

Robots Middle East supplies the SIASUN SR25A-12/2.01 to manufacturers, fabrication shops and system integrators across the Middle East. Our team prepares each quotation around your welding application and arranges delivery to your facility. We remain your point of contact for technical support once the robot enters production.

Background

SIASUN and its industrial robot range

SIASUN is a Chinese manufacturer of industrial robots and automation systems. Its catalogue runs from compact welding arms to heavy-payload handling robots, and the wider line-up is presented in our Industrial Robots category. The SR25A-12/2.01 belongs to the SR25A family, which SIASUN offers in three versions: the SR25A-12/2.01, the SR25A-25/1.80 and the SR25A-35/1.80. SIASUN also lists this model as a robot type in its arc welding robotic solution, alongside the SR12A-12/1.46. That placement makes its intended role clear. The SR25A-12/2.01 has obtained CE certification under the EU Machinery Directive (MD) and the Electromagnetic Compatibility Directive (EMC), which matters to buyers whose plants follow European conformity requirements.

A lighter generation with the welding kit built in

The model reflects a generational redesign rather than a minor update. SIASUN casts the structure from automotive engine-grade aluminium alloy using a special process, and this cuts weight by 25% compared with the previous generation. Against that same predecessor, repeat positioning accuracy has increased by 40% and operational efficiency has risen by 67%. The arm follows a streamlined, hollow bow-shaped design that reduces interference with workpieces. Its welding cable system is routed internally, which prevents external wear and improves wire feeding stability. The wire feeder is integrated compactly into the robot body. Together, these choices give a more compact cell layout and greater flexibility in how the torch approaches a joint.

Technical Specifications

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

SIASUN has not published the robot's weight, axis speeds, axis motion ranges, permissible wrist torque, operating temperature, mounting dimensions, cabling length or the contents of the box; Robots Middle East confirms these at quotation.

Why choose a 12 kg robot with a 2010mm reach for welding?

In arc welding, the tool at the end of the arm is a torch, often with a small sensor or cleaning accessory. It does not need the lifting capacity that handling or palletising robots carry. What it needs is reach, so that the robot can follow long seams and work around large weldments without frequent repositioning of the part. The SR25A-12/2.01 is set up for that profile. Its 12 kg (26.5 lbs) payload covers typical torch packages, and its 2010mm reach extends the working envelope across sizeable assemblies.

Repeatability of ±0.07mm supports consistent torch placement from one part to the next, which is the basis of steady bead quality in series production. The IP65-rated wrist suits the spatter, fumes and cleaning routines of a welding environment. Because the arm is hollow and the feeder sits inside the body, the long reach does not come with a long trail of external hardware. Swinging such hardware around a large envelope would otherwise raise the risk of snagging on clamps and fixtures.

What does the generational redesign mean on the shop floor?

The three figures SIASUN gives against the previous generation each have a practical consequence. A structure that is 25% lighter places less inertia on the drives. It also makes inverted installation on gantries or overhead frames a more manageable engineering task. A 40% improvement in repeat positioning accuracy lets programmers trust taught points across long production runs. A 67% rise in operational efficiency translates into shorter cycles for the same weld programme, provided that the rest of the cell keeps pace.

The internal cable system adds a further benefit that does not appear in any table. External welding cables wear as they rub against the arm and the surroundings, and a worn cable or a disturbed wire path upsets feeding. That is one of the common causes of unplanned stops in a welding cell. Routing the cable inside the arm and integrating the feeder into the body addresses that weakness at its source. Support for upright and inverted installation, together with the compact layout, helps the robot fit cells where floor space is already committed to positioners, fixtures and safety guarding.

Who is the SIASUN SR25A-12/2.01 for?

The primary buyers are fabricators who weld large or awkwardly shaped steel structures. SIASUN names heavy machinery, shipbuilding, automotive manufacturing and railway vehicle production among the sectors this model serves. Shipyards and steel fabricators building modules, frames and structural sections for infrastructure projects will recognise the value of reach in a light welding arm. So will manufacturers of construction and agricultural equipment.

System integrators form a second group. They design welding cells around a controller, a positioner and a robot, and they benefit from the defined SRC E5 controller, the modest 3 KVA power capacity and the choice of upright or inverted mounting. Plants that export to Europe, or that work to European machinery standards, will also value the CE certification under the MD and EMC directives.

Not every welding task needs this envelope. SIASUN's arc welding solution also lists the SIASUN SR12A-12/1.46, and we can compare the two against your parts and cell layout. Where your process calls for a different combination of payload and reach, the family also includes the SIASUN SR25A-25/1.80 and the SIASUN SR25A-35/1.80. Their specifications are confirmed separately at quotation. Further alternatives appear in our Small Payload category.

What is the SIASUN SR25A-12/2.01 used for?

1. Shipbuilding sections: welding stiffeners, frames and panel assemblies where long seams demand an extended reach.
2. Heavy machinery structures: arc welding booms, chassis members and frames for construction and mining equipment.
3. Automotive manufacturing: repeatable welding of subframes, brackets and structural components in series production.
4. Railway vehicle production: joining bogie frames, underframes and body structures with consistent torch placement.
5. Confined and overhead cells: inverted installation where floor space is taken by positioners and fixtures.
6. Turnkey arc welding cells: integration with the SRC E5 controller as part of SIASUN's arc welding robotic solution.

Pricing and Availability

Robots Middle East supplies the SIASUN SR25A-12/2.01 on a quotation basis. Each offer reflects the configuration, controller set-up and integration scope your application requires. Delivery, customs clearance and technical support are arranged together with the quotation, so you receive a complete picture before you commit. To start the process, send us a short description of your parts, seam lengths and cell layout using the quotation request available on this page.

Frequently Asked Questions

What payload does the SIASUN SR25A-12/2.01 carry?

The robot has a payload of 12 kg (26.5 lbs), which suits torch packages and light welding accessories.

How far can the SR25A-12/2.01 reach?

Its reach is 2010mm, allowing it to follow long seams on sizeable weldments.

Which controller does it use?

The SR25A-12/2.01 works with the SIASUN SRC E5 controller, and its power capacity is 3 KVA.

Can the robot be mounted upside down?

Yes. It supports upright and inverted installations, which helps where floor space is limited.

Is the welding cable routed externally?

No. The welding cable runs through a built-in system inside the hollow bow-arm, and the wire feeder is integrated into the robot body. This protects the cable from external wear and stabilises wire feeding.

Does the SR25A-12/2.01 carry CE certification?

Yes. It has obtained CE certification under the EU Machinery Directive (MD) and the Electromagnetic Compatibility Directive (EMC).

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

You can buy it from Robots Middle East, which supplies it across the Middle East. Pricing depends on configuration and integration scope and is set out in a quotation prepared for your application.

Summary

The SIASUN SR25A-12/2.01 answers a simple observation about welding: the torch is light, but the work can be large. It combines a 12 kg (26.5 lbs) payload with a 2010mm reach and ±0.07mm repeatability. The arm is hollow and 25% lighter than its predecessor, with the cable and wire feeder carried inside rather than alongside. It is a robot designed to reach far without getting in its own way. With the SRC E5 controller, an IP65-rated wrist, upright or inverted mounting and CE certification, it suits fabricators and integrators in shipbuilding, heavy machinery, automotive and railway production. For a quotation that covers configuration, delivery and support from Robots Middle East, this page is the starting point.