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

Most welding robots carry their cables on the outside, and every turn of the wrist asks those cables to survive another brush against a fixture. The SIASUN SR25A-12/2.01 (SR25A-12/2.01) moves that problem indoors: the welding cable runs inside a hollow arm, and the wire feeder sits within the robot body instead of hanging off it.

The SIASUN SR25A-12/2.01 is available through this page, by quotation.

Background

SIASUN and the SR25A line

SIASUN is an industrial robot maker whose catalog runs from small-payload arms to very large machines. The SR25A-12/2.01 belongs to the lighter end of that range, in the Small Payload group of the wider Industrial Robots range. The sources name two sibling versions of the SR25A family: the SIASUN SR25A-25/1.80 (SR25A-25/1.80) and the SIASUN SR25A-35/1.80 (SR25A-35/1.80).

The model is also listed as a robot type in SIASUN's arc welding robotic solution, together with the SIASUN SR12A-12/1.46 (SR12A-12/1.46). It has obtained CE certification under the EU Machinery Directive (MD) and the Electromagnetic Compatibility Directive (EMC), which matters to buyers who export finished equipment or have to document conformity for insurers and inspectors.

Positioning and key technology

The SR25A-12/2.01 is built around a streamlined, hollow bow-arm design. The arm is shaped to reduce interference with workpieces, which gives the cell designer more flexibility and allows a more compact layout. The structure is cast from automotive engine-grade aluminum alloy using a special casting process, and this gives a weight reduction of 25% compared with the previous generation.

Welding functions are folded into the body. The built-in welding cable system prevents external wear and improves wire feeding stability, and the wire feeder is compactly integrated into the robot body. Together these choices point to one purpose: a small-payload arm that is meant to weld, with the welding equipment treated as part of the robot rather than an accessory attached afterward.

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 operating temperature, the mounting dimensions, the contents of the box or the cabling length; they are confirmed at quotation.

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

The difference is where the welding hardware lives. On a conventional setup, the cable package and the feeder are mounted outside the arm, so they are exposed to fixtures, clamps and the robot's own motion. They wear, they snag, and they pull on the wire as the wrist turns. The SR25A-12/2.01 routes the cable through the hollow arm, and the built-in cable system prevents external wear while improving wire feeding stability. Because the wire feeder is compactly integrated into the body, the feed path stays short and protected.

The second difference is the shape of the arm. The streamlined bow design reduces interference with workpieces, which is helpful when a torch has to reach into a fixture or work close to a part. The model supports multiple installation modes, including upright and inverted installations. That makes it adaptable to work in confined spaces, where a bulkier arm would force the cell to grow.

The wrist is rated IP65, which suits a process that produces spatter, dust and fumes around the torch. Add the 2010mm reach and the ±0.07mm repeatability, and the picture is of a compact arm that is meant to put a torch precisely where the seam is.

What changed compared with the previous generation?

SIASUN compares this robot with its predecessor on several points. The aluminum alloy casting gives a weight reduction of 25%. Repeat positioning accuracy is increased by 40%, and operational efficiency is boosted by 67%. The design pairs a high-stiffness, lightweight structure with a robust drive system, which SIASUN describes as a dual leap in speed and precision.

These are generation-to-generation comparisons, so they say how far this model has moved, not how it stands against other brands. For a buyer replacing an older arm, they are a useful starting point for the conversation about cycle time and seam quality.

Who is the SIASUN SR25A-12/2.01 for?

Fabricators who weld in tight cells are the first group. If your fixtures crowd the robot and cable wear is a recurring maintenance item, an arm with internal cabling and an integrated feeder addresses both. Shops that build heavy machinery, ships, automobiles or railway vehicles will recognize the sectors named for this model.

Integrators are the second group. A compact body, a choice of upright or inverted mounting and a listing in SIASUN's arc welding solution make the robot easy to place in a standard welding package. The SRC E5 controller and a power capacity of 3 KVA are the electrical facts to plan around.

Buyers who need a different payload class should look at the siblings. The SR25A-25/1.80 and the SR25A-35/1.80 belong to the same family, and the SR12A-12/1.46 shares the arc welding solution. Request quotations side by side so that the datasheet figures can be compared directly.

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

1. Arc welding cells. It is listed as a robot type in SIASUN's arc welding robotic solution.
2. Heavy machinery fabrication. Heavy machinery is among the sectors named for the model.
3. Shipbuilding. Compact layout and installation flexibility help in confined work areas.
4. Automotive manufacturing. Repeatability of ±0.07mm supports consistent seam placement.
5. Railway vehicle production. The model is named for this sector alongside the others.
6. Confined-space operations. Upright and inverted installations let the arm fit where space is limited.

Pricing and Availability

Pricing is provided by quotation, so please send us your application details and the quantity you have in mind. Delivery, customs and support are arranged together with the quotation. The SIASUN SR25A-12/2.01 is available on this page.

Frequently Asked Questions

What payload and reach does the SR25A-12/2.01 have?

The payload is 12 kg (26.5 lbs) and the reach is 2010mm. These figures belong to this version only, not to the other SR25A versions.

How accurate is the robot?

The repeatability is ±0.07mm. Compared with the previous generation, repeat positioning accuracy is increased by 40%.

Is the wrist protected against dust and water?

The wrist protection is rated IP65.

Can the robot be mounted upside down?

Yes, upright and inverted installations are both supported. The model supports multiple installation modes and suits operation in confined spaces.

Which controller does it use?

The controller model is SRC E5, and the power capacity is 3 KVA.

Does it 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 request it through this page. The price is given in a quotation, which also covers delivery, customs and support.

Summary

The SR25A-12/2.01 solves a small, stubborn problem: cables and feeders that live outside the arm and suffer for it. By placing the welding cable inside a hollow bow-arm and integrating the wire feeder into the body, SIASUN gives a 12 kg payload robot with 2010mm reach, ±0.07mm repeatability and an IP65 wrist a cleaner working envelope. If that matches your welding cell, this page is the starting point.