SIASUN Industrial Robot Arm with 1465mm Reach, 12kg Max Payload, 6 DOFs (SR12A-12/1.46)

In most arc welding cells the limiting factor is not how much the robot can carry but where its torch hose goes. A cable bundle swinging outside the arm catches on clamps and fixtures, wears against the casting and can unsettle the wire feed just when a seam needs consistency. The SIASUN Industrial Robot Arm with 1465mm Reach, 12kg Max Payload, 6 DOFs (SR12A-12/1.46) deals with that problem in its architecture rather than with accessories: a hollow bow-shaped arm that carries the cabling inside, and a wire feeder built into the robot body. It is a welding robot designed from the torch outwards.

Robots Europa, based in Dublin, supplies the SR12A-12/1.46 to manufacturers and system integrators throughout the European Union and the DACH region. Robots Europa prepares a written quotation for each enquiry, coordinates delivery to your site and remains your point of contact for technical support once the robot is in production, so that sourcing a SIASUN arm within Europe is as straightforward as working with a local supplier.

Background

SIASUN and its industrial robot range

SIASUN is a Chinese manufacturer of robots and automation systems whose portfolio runs from compact articulated arms through heavy palletising robots to mobile robots for material transport. Its articulated arms are grouped by payload class, and the SR12A-12/1.46 belongs to the Small Payload family, where the emphasis lies on agility, precision and compact cell layouts rather than on raw lifting capacity. The model is a newer generation of SIASUN's welding arm, and it improves on its predecessor in three respects: it is lighter, more precise and more productive. For buyers comparing the wider choice of articulated machines, the full Robot Arms range offers useful context.

Built around the welding process

SIASUN developed the SR12A-12/1.46 specifically for demanding arc welding applications, and that purpose shapes almost every design decision. The hollow bow-shaped arm allows internal cabling, which gives the robot greater flexibility in confined spaces and keeps hoses away from the workpiece. The wire feeder is compactly integrated into the robot body, a choice that improves wire feeding stability by shortening and steadying the path between feeder and torch. The structure is cast using a special process with automotive engine-grade aluminium alloy, which accounts for the 25% weight reduction over the previous generation. At the wrist, where the arm works closest to the arc, the protection rating is IP65.

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, wrist moment ratings, power supply voltage, operating temperature, noise level, package contents or whether the controller is included in delivery; Robots Europa confirms each of these at quotation.

What has changed compared with the previous SIASUN generation?

The SR12A-12/1.46 is a clear step forward from the arm it replaces, with three quantified improvements. Repeat positioning accuracy has increased by 40%, operational efficiency has risen by 67%, and the robot weighs 25% less thanks to its aluminium alloy casting. These figures are relative to the predecessor, and together they point to a coherent engineering goal.

A lighter arm has less inertia to accelerate and brake at every change of direction. In welding, where the torch constantly repositions between short seams, tack points and corners, that reduction in moving mass translates into shorter air moves and steadier behaviour at the start and end of each weld. The improved repeatability of ±0.03mm means the torch returns to the same point on each part, which matters when fixtures hold batches of identical components and the weld programme is expected to run unchanged for an entire shift. For a production manager, the practical meaning of the efficiency gain is more parts per cell without enlarging the cell itself.

Why does internal cabling matter in arc welding?

A welding robot carries more than its torch: the hose package delivers wire, shielding gas, current and often coolant. When that package runs along the outside of the arm, it limits which orientations the wrist can safely reach, it collides with fixtures in tight spaces and it wears with every cycle. Routing the cabling through the hollow bow-shaped arm, as SIASUN does on the SR12A-12/1.46, removes most of that exposure.

The benefit is both geometric and practical. Geometrically, the arm can approach joints on complex weldments from angles that an externally cabled robot would avoid, and it can operate with small turning radii in narrow areas. Practically, a protected cable path tends to mean fewer interruptions for hose replacement and a cleaner cell. Combined with the wire feeder integrated into the robot body, the internal routing gives the wire a more stable path to the torch, which supports consistent feeding and, in turn, consistent seams. Because the arm can be floor-mounted or ceiling-hung, and also installed upright, inverted or side-mounted, integrators can place it where it reaches the work best rather than where floor space happens to be free.

Who is the SIASUN SR12A-12/1.46 for?

The most natural buyers are fabricators and component suppliers who weld medium-sized steel assemblies in volume and want a dedicated, compact welding robot rather than a general-purpose arm fitted with welding equipment. Automotive and machinery suppliers working to tight positional tolerances will value the repeatability, while job shops moving from manual to robotic welding will appreciate a machine whose welding hardware is already part of the design.

System integrators form a second important group. The range of installation options and the inverted and ceiling-hung configurations allow them to build dense cells, place robots above fixtures or position two arms close together on one workpiece. The choice of SRC M5 or SRC E5 controller gives them flexibility when standardising a production line.

Where the workpiece is larger and the arm needs to reach further, the SIASUN Industrial Robot Arm with 2010mm Reach, 12kg Max Payload, 6 DOFs (SR25A-12/2.01) is the sibling to compare. For heavier tooling or handling tasks beyond welding, the larger arms in the range, such as the SIASUN Industrial Robot Arm (SR25A-25/1.80) and the SIASUN Industrial Robot Arm (SR50A-50/2.15), are worth considering.

What is the SIASUN SR12A-12/1.46 used for?

1. Automotive component welding — brackets, seat frames, exhaust parts and chassis subassemblies produced in repeated batches.
2. Steel frames and structures — welded frames for furniture, racking, enclosures and equipment housings.
3. Machinery and agricultural subassemblies — weldments with many short seams that demand frequent torch reorientation.
4. Compact multi-robot cells — several arms working closely around a single fixture, supported by the internal cabling.
5. Ceiling-hung or inverted installations — reaching down onto fixtures while keeping the floor clear for loading and positioners.
6. Automating manual welding stations — replacing hand welding at existing stations where space is limited.

Pricing and Availability

Robots Europa supplies the SR12A-12/1.46 on the basis of an individual quotation, which reflects the controller variant, the welding package and the configuration your application requires. Send us a brief description of your parts, seams and preferred mounting, and we will prepare a quotation tailored to your cell. Delivery, customs clearance and technical support are arranged together with the quotation. To begin, the quotation request form is available on this page.

Frequently Asked Questions

What payload does the SR12A-12/1.46 handle?

The robot has a payload of 12 kg (26.5 lbs), which is ample for a welding torch and its associated hardware.

Can the robot be installed on the ceiling or on a wall?

Yes. It supports upright, inverted and side-mounted installations, and it can be floor-mounted or ceiling-hung, which suits narrow areas and operations with small turning radii.

Which controller does it use?

The robot works with the SRC M5 or SRC E5 controller, so integrators can choose the variant that matches their production line.

How precise is the SR12A-12/1.46?

Its repeatability is ±0.03mm, and repeat positioning accuracy is 40% higher than in the previous generation.

Does the robot come with a wire feeder?

Yes, the wire feeder is integrated into the robot body, which improves wire feeding stability.

What protection rating does the robot have?

The wrist is rated IP65, which protects it where it works closest to the arc.

Where can I buy the SIASUN SR12A-12/1.46 and what does it cost?

You can purchase it from Robots Europa in Dublin, which supplies customers across the EU and the DACH region. The cost depends on configuration and scope of supply, so please request a quotation through this page.

Summary

The SR12A-12/1.46 begins where welding cells usually struggle: with the hose package, the wire path and the space around the fixture. By routing cables through a hollow bow-shaped arm, integrating the wire feeder into the body and reducing weight through aluminium alloy casting, SIASUN has built an arm whose layout serves the arc rather than working around it. A payload of 12 kg, a reach of 1465mm, repeatability of ±0.03mm and flexible installation options complete a package designed for compact, productive welding cells. For a quotation from Robots Europa, with delivery and support arranged throughout the EU and the DACH region, this page is the starting point.