SIASUN SR12A-12/1.46 (SR12A-12/1.46)

A welding torch is only as free as the cables behind it. The SIASUN SR12A-12/1.46 (SR12A-12/1.46) is built around that idea: a hollow bow-shaped arm carries the cabling inside, and the wire feeder sits compactly in the robot body, so the cell stays tidy even where space is tight. It is an industrial robot developed for demanding arc welding applications.

The SIASUN SR12A-12/1.46 is available through this page, by quotation.

Background

SIASUN and its engineering record

SIASUN builds industrial robots and the applications around them. The manufacturer cites over two decades of engineering validation and thousands of project experiences, and it uses that record to deliver value-added services that combine robot products with the work they are meant to do. For a buyer, this matters because arc welding is not a task where a robot can be judged on a catalog page alone. The torch, the wire, the fixtures and the cell layout all shape the result, and a maker that has seen many such projects tends to design the arm with those realities in mind.

The SR12A-12/1.46 belongs to the small payload class of the SIASUN range. Robots in this class are the everyday workhorses of fabrication shops, where parts are modest in weight but the demands on path accuracy and cell compactness are high. You can browse the wider family in the Small Payload category or in the full Industrial Robots range.

Positioning and key technology

This model is a specialist rather than a generalist. Its design focuses on high precision and high stability, and its structure is made to keep vibration low so that it can run steadily over long periods. The arm is cast from automotive engine-grade aluminum alloy using a special casting process, and the result is a weight reduction of 25% compared with the previous generation.

Two features set its welding character. First, the hollow bow-shaped arm allows internal cabling, which gives greater flexibility in confined spaces. Second, the wire feeder is integrated into the robot body, which improves wire feeding stability. Add an integrated conduit layout that was designed with welding in mind, and the robot arrives as a coherent welding platform instead of a general arm with accessories bolted on.

Technical Specifications

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

The manufacturer has not published the robot weight, the axis speeds, the axis motion ranges, the wrist permissible torque, the power supply voltage, the operating temperature, the dimensions, the contents of the box or the cable length; they are confirmed at quotation.

What makes the SR12A-12/1.46 different from the previous generation?

The manufacturer states three changes against the earlier design, and each one touches daily production. The first is mass: the casting process and the aluminum alloy bring a weight reduction of 25%. A lighter arm is easier to plan around, and it reflects a structure that has been optimized rather than simply scaled.

The second is accuracy. Repeat positioning accuracy is increased by 40%, and the current figure is ±0.03mm. In arc welding, a seam is only as good as the robot's ability to return to the same point, part after part, so this is the figure that tends to show up in weld quality and in less rework.

The third is speed of work. Operational efficiency is boosted by 67%, and the high-performance drive system delivers faster overall cycle times. Taken together, the new generation is lighter, more repeatable and quicker, which is the combination a welding line asks for when it wants more output from the same floor space.

Why does internal cabling matter in arc welding?

Anyone who has watched a welding robot work in a crowded cell knows the problem. Cables and hoses hang outside the arm, snag on fixtures, wear at the bends and limit how close the robot can get to the part. Every one of those issues costs time, either in programming workarounds or in stopping to replace damaged lines.

The hollow bow-shaped arm of the SR12A-12/1.46 answers this directly by allowing the cabling to run inside. The robot gains flexibility in confined spaces, and the torch can reach into places where an exposed cable bundle would be in the way. The wire feeder, compactly integrated into the robot body, adds to this: a feeder close to the torch path supports wire feeding stability, which is central to a steady arc.

Mounting adds one more option. The robot can be floor-mounted or ceiling-hung, which makes it well-suited for operations with small turning radii and in narrow areas. A ceiling-hung robot frees the floor for operators, parts and conveyors, while a floor-mounted one suits the simplest cell layouts. The same arm serves both.

Who is the SIASUN SR12A-12/1.46 for?

The first buyer is the fabrication shop that welds small and medium parts in a limited footprint. With a payload of 12 kg (26.5 lbs) and a reach of 1465mm, the robot fits workstations where space is the real constraint and where a compact cell is worth more than a larger envelope.

The second is the integrator building turnkey welding cells. The integrated wire feeder and the internal cabling shorten the design work around the torch, and the choice of floor or ceiling mounting gives the layout team room to experiment. The third is the plant moving from an older robot generation, where gains in weight, accuracy and efficiency are the reason to look again.

Beyond welding, the manufacturer lists handling, assembly, adhesive application, loading and unloading, and torqueing and fastening among the application areas, so a shop with mixed needs can also consider it. If your parts or tasks call for a different class of machine, the family includes other models, such as the SIASUN SR25A-12/2.01, the SIASUN SR25A-25/1.80 and the SIASUN SR50A-50/2.15. Ask us and we will compare them against your application.

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

1. Arc welding. The core purpose: demanding seams with a wire feeder integrated into the robot body and an integrated conduit layout.
2. Handling. Moving parts between stations within the 12 kg (26.5 lbs) payload.
3. Assembly. Positioning components with a repeatability of ±0.03mm.
4. Adhesive application. Following a repeatable path to lay down adhesive in a controlled way.
5. Loading and unloading. Feeding machines and fixtures from a floor or ceiling mounting position.
6. Torqueing and fastening. Repeated fastening tasks where position accuracy matters.

Pricing and Availability

We do not print prices on this page. Quotation is the next step: tell us your application, your cell layout and the controller you prefer, and we prepare an offer built around them. Delivery, customs and support are arranged with the quotation, so there are no surprises later. The SIASUN SR12A-12/1.46 is available on this page.

Frequently Asked Questions

What is the payload and reach of the SR12A-12/1.46?

The payload is 12 kg (26.5 lbs) and the reach is 1465mm. Both figures are as the manufacturer publishes them.

How accurate is it?

Repeatability is ±0.03mm. The manufacturer states that repeat positioning accuracy is increased by 40% compared with the previous generation.

Can it be mounted on the ceiling?

Yes. It can be floor-mounted or ceiling-hung, which suits operations with small turning radii and in narrow areas.

What protection rating does it have?

The wrist is rated IP65. The manufacturer does not publish a rating for other parts of the robot, and we confirm this at quotation.

Which controller does it use?

The listed controller is SRC M5 / SRC E5, with a power capacity of 2 KVA. Confirm your preferred controller when you request the quotation.

Is it only for welding?

Welding is its main purpose, but the manufacturer also lists handling, assembly, adhesive application, loading and unloading, and torqueing and fastening. Other robots are in the wider industrial robot range if your needs differ.

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

You can buy it through this page by requesting a quotation. We do not publish prices; the offer is prepared for your application, with delivery, customs and support arranged alongside it.

Summary

The SIASUN SR12A-12/1.46 treats the cable path as part of the weld. A hollow bow-shaped arm with internal cabling, an integrated wire feeder, a lighter cast body and the option to hang it from the ceiling all serve one goal: a welding robot that works well where space is limited. With a payload of 12 kg (26.5 lbs), a reach of 1465mm, repeatability of ±0.03mm and an IP65 wrist, it is a clear candidate for compact arc welding cells. For a quotation tailored to your cell, this page is the starting point.