SIASUN SR25A-35-1.80 (SR25A-35/1.80)

The family code says SR25A, yet the arm is built for more than that name suggests. The SIASUN SR25A-35-1.80 (SR25A-35/1.80) is an upgraded iteration of a 20 kg-class product, reworked to carry 35 kg (77.2 lbs) and to reach 1803mm. For a plant that has outgrown a lighter robot but does not want a large-payload machine, it fills the gap.

This product is available through this page, by quotation.

Background

SIASUN and the SR25A lineage

SIASUN builds industrial robots in several payload classes, and its catalog runs from small-payload arms to very heavy machines. The SR25A platform sits in the small-payload group. Within that platform, SIASUN offers more than one version: the SR25A-12/2.01, the SR25A-25/1.80 and the model on this page, the SR25A-35/1.80. Each version has its own rating, so choose by the full code and not by the family name alone.

If you want to compare neighbors, you can look at the SIASUN Industrial Robot Arm (SR25A-25/1.80) or the SR25A-12/2.01 arm. The wider Small Payload category shows the rest of the range in one place.

What the SR25A-35/1.80 is built around

The SR25A-35/1.80 is positioned as an upgraded iteration of the 20 kg-class product, and the upgrade expands the fields where the arm can be applied. Several design choices explain how that is done.

The first is weight. The arm uses a special casting process with automotive engine-grade aluminum alloy, which keeps the structure light. The second is the wrist. The J4-J6 axis design follows the hollow concept, which prevents interference and makes layout easier. The J5 and J6 axes offer a wide motion range of ±180°, which gives the arm greater applicability around the workpiece.

Two smaller details matter in daily work. The wire feeder is integrated, which improves wire feeding stability and operational efficiency. Each joint also has a zero-position calibration groove, so a technician can align the zero position precisely with a dedicated tool.

Technical Specifications

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

The manufacturer has not published the robot weight, the power supply, the controller model, the axis speeds, the operating temperature, the mounting dimensions, what is in the box or the communication interfaces; they are confirmed at quotation.

What makes the SR25A-35/1.80 different from a lighter SR25A?

The most direct difference is capacity. This version is rated for 35 kg (77.2 lbs) with a reach of 1803mm, and it grows out of a design that began in the 20 kg class. That means heavier torches, grippers and tools can be mounted without moving to a much larger machine class. Each sibling version carries its own rating, so compare them by their full codes.

The second difference is how the arm is meant to be used. The upgrade expands the scope of application fields, and the design details show where. A hollow J4-J6 wrist helps when cables and hoses must be laid out without snagging. A wide ±180° range on J5 and J6 helps the tool reach awkward angles. An integrated wire feeder points toward welding work, where feeding stability decides the quality of the seam.

Finally, the arm is not limited to one process. A grinding kit system exists for this model, with a single-head force-controlled tool for light-duty application. One robot platform can therefore serve both a welding cell and a finishing station, which keeps spare parts and operator training simpler.

Why does the wrist design matter in a working cell?

In most cells, the wrist is where problems start. Cables that loop outside the arm can catch on fixtures, and they wear faster when the tool turns through large angles. The hollow J4-J6 design keeps that routing inside, which cuts down interference and makes the layout easier to plan.

The IP65 protection on the wrist is also relevant. It tells a buyer that the wrist section is rated for dust and water jets, which suits shops where grinding dust, spatter or washdown are part of the day. The rating applies to the wrist and not to the entire arm.

Maintenance is helped by the zero-position calibration groove on each joint. After a service, a crash or a motor replacement, a technician can return each joint to its reference position with the dedicated tool and not by eye. For a plant that cannot afford long recovery times, this is a practical advantage.

Who is the SR25A-35/1.80 for?

Welding shops are the clearest fit. The integrated wire feeder, the hollow wrist and the wide J5/J6 motion range all serve a torch that has to move through tight joints. Fabricators who run heavier torches or accessories will value the 35 kg (77.2 lbs) rating.

Finishing and surface-treatment teams are the second group. The grinding kit system with a single-head force-controlled tool suits light-duty grinding and polishing, and repeatability of ±0.05mm helps keep results consistent from part to part.

Integrators and plant engineers in the Caribbean who build cells for handling, assembly or loading and unloading will also find a sensible mid-range option here. If your tooling is lighter than this arm needs, look at the SR25A-25/1.80. If you are comparing a wider set of machines, the Industrial Robots category is the place to start.

What is the SR25A-35/1.80 used for?

1. Arc welding. The integrated wire feeder supports stable wire feeding in a welding cell.
2. Grinding and polishing. The kit system with a single-head force-controlled tool covers light-duty finishing.
3. Material handling. A 35 kg (77.2 lbs) payload and 1803mm reach let one arm serve several stations.
4. Assembly. Repeatability of ±0.05mm supports parts that must be placed accurately.
5. Loading and unloading. The reach lets the arm feed and clear machines from a single mounting point.
6. Work in dusty or wet areas. The IP65 wrist is rated for harsher surroundings near the tool.

Pricing and Availability

We do not print prices on this page. A quotation is the way to start: tell us your application, your tooling and your site, and we will answer with a formal offer. Delivery, customs and support are arranged with the quotation. The SIASUN SR25A-35-1.80 (SR25A-35/1.80) is available on this page.

Frequently Asked Questions

What payload can the SR25A-35/1.80 carry?

It is rated for 35 kg (77.2 lbs). Tooling, grippers and the wire feeder setup should be planned within that rating.

How far does the arm reach?

The reach is 1803mm. That is the figure for this version only.

How accurate is it?

Repeatability is ±0.05mm. This describes how consistently the arm returns to a taught position.

Is the arm protected against dust and water?

The wrist is rated IP65. The rating covers the wrist section, not the entire arm.

Can it do welding and grinding?

Yes, the design supports both. The wire feeder is integrated for welding, and a kit system with a single-head force-controlled tool is available for light-duty grinding.

What motion range do the wrist axes have?

The J5 and J6 axes offer a motion range of ±180°. The J4-J6 axes also follow a hollow design that prevents interference and eases layout.

Where can I buy the SR25A-35/1.80 and what does it cost?

You can request it through this page. The cost depends on configuration, tooling and delivery, so it is given in a quotation and not printed here.

Summary

The name says SR25A, but the work it can take on is bigger than the family code suggests. This version grows out of a 20 kg-class design and carries 35 kg (77.2 lbs) over 1803mm with ±0.05mm repeatability. A lightweight cast aluminum body, a hollow J4-J6 wrist, a wide J5/J6 range, an integrated wire feeder and a calibration groove on each joint make it practical in welding, handling and finishing cells. For a quotation on the SIASUN SR25A-35-1.80 (SR25A-35/1.80), this page is the starting point.