SIASUN Industrial Robot Arm (SR20A)

A welding torch, a bead of adhesive and a tray of components have little in common on the shop floor, yet the robot that carries each of them is judged by the same three questions: how much it can lift, how far it can reach, and how reliably it returns to the same point. The SIASUN Industrial Robot Arm (SR20A) answers all three plainly. It is a 6-axis robot arm with a payload of 20 kg, a reach of 1745 mm and a repeatability of 0.1 mm. That combination places it in the working middle of industrial robotics, the territory where a great many welding, dispensing, assembly and handling cells are actually built.

Robots Europa, based in Dublin, supplies the SR20A to manufacturers, system integrators and research facilities across the European Union and the DACH region. Robots Europa prepares the quotation, coordinates delivery to your site and remains your point of contact for support after installation. A project in Ireland, Germany, Austria, Switzerland or elsewhere in the EU therefore deals with a single seller from the first enquiry through to commissioning, and questions about documentation and CE marking are answered as part of the same conversation.

Background

Siasun and its robot families

The SR20A is manufactured by Siasun. The Siasun catalogue offered by Robots Europa covers several distinct families of automation equipment: articulated SR-series robot arms in a range of sizes, SP-series arms built for palletising, and mobile robots designed to assist on assembly lines, such as the Axle Final Line Assisted Assembly Mobile Robot. Within that portfolio, the SR20A is one of the articulated arms, a machine intended to be integrated into a production cell together with tooling, fixtures, guarding and a programme written for the task in hand.

For buyers, the value of a manufacturer with a broad range is practical. A plant that standardises on one brand can share programming knowledge, spare-parts planning and service relationships across several cells, even where each cell needs a different payload class.

Positioning: a general-purpose articulated arm

Six-axis articulated arms are the most widely used form of industrial robot because their joints allow the tool to be positioned and oriented almost freely within the working envelope. This is what lets the same class of machine follow a curved weld seam, approach a part from an awkward angle, or present a component to a fixed tool. The SR20A belongs squarely to this category. The manufacturer lists additive manufacturing, assembly, dispensing, material handling, remote TCP and welding as its common applications, a spread that confirms its role as a general-purpose arm rather than a machine tied to one process.

Technical Specifications

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

The manufacturer has not published the protection rating, power supply, controller model, joint speeds, axis motion ranges, mounting options, communication interfaces, operating temperature or the contents of the delivery; Robots Europa confirms each of these with the quotation.

What can a 20 kg payload and a 1745 mm reach handle in practice?

A payload rating on an industrial arm is normally the total mass the wrist may carry, which means the end effector counts against it as well as the workpiece. With 20 kg available, the SR20A leaves room for a welding torch with its cable package, a dispensing valve, or a gripper together with the part it holds. When planning a cell, it is sensible to add up the weight of the tool, any adapter plates and the heaviest part, and to check the result against the payload with the centre of gravity of the tooling in mind.

The reach of 1745 mm defines how large a working area one arm can serve from a single position. In a welding or dispensing cell, that reach decides whether one robot can cover a complete fixture, or whether parts must be repositioned. In handling, it determines how many stations, conveyors or racks the arm can serve without being moved.

Repeatability of 0.1 mm describes how closely the arm returns to a taught position. For seam welding, adhesive beads and assembly operations where parts must meet a fixture consistently, this is the figure that matters most day to day. The arm itself weighs 500 kg, so the floor, base or pedestal must be assessed as part of cell design.

How does the SR20A compare with other SIASUN arms?

Choosing an arm is largely a matter of matching payload and reach to the task without paying for capacity the process will never use. The SR20A suits processes in which the tool and part stay within 20 kg and the work lies within its reach. Where a project calls for more capacity, or where the job is end-of-line stacking rather than process work, Robots Europa can set the SR20A beside other models in the Siasun range and help you choose the machine whose capacity fits the task. That comparison is made model by model, so that each arm is judged on its own figures rather than on characteristics borrowed from its siblings.

Who is the SIASUN Industrial Robot Arm (SR20A) for?

The SR20A is aimed at manufacturers who want a single, versatile arm for process work. Fabrication shops adding robotic welding, producers who apply sealants or adhesives, and assembly plants looking to automate repetitive joining and fitting tasks will find its application profile closely matched to their needs. Material handling between machines, conveyors and fixtures is equally within its brief.

System integrators are a second important group. An integrator building cells for customers across the EU benefits from an arm whose payload, reach and repeatability are clearly stated, and from a seller who can coordinate delivery and support in the same region. Research institutes and technical training centres exploring additive manufacturing or remote TCP processes form a third segment, since the SR20A is listed for both.

Buyers whose tooling and parts approach the payload limit can ask Robots Europa to compare the SR20A with the SIASUN Industrial Robot Arm (SR25A-25/1.80) or the SIASUN Industrial Robot Arm (SR50A-50/2.15). For dedicated palletising, the SIASUN Industrial Palletizing Robot Arm (SP120A-120/2.50) is built specifically for that task. A wider overview is available among our Robot Arms and across the full range of Factory Robots.

What is the SIASUN Industrial Robot Arm (SR20A) used for?

1. Welding – guiding a torch along seams with consistent speed, angle and position from one part to the next.
2. Dispensing – laying beads of adhesive or sealant along a programmed path with repeatable placement.
3. Assembly – picking, positioning and joining components in fixtures where consistent placement is essential.
4. Material Handling – moving parts between machines, conveyors, racks and inspection stations within its reach.
5. Additive Manufacturing – carrying a deposition head through layered build paths in robotic additive processes.
6. Remote TCP – holding the workpiece and moving it against a fixed tool, such as a stationary grinder or dispenser.

Pricing and Availability

Robots Europa supplies the SR20A on the basis of an individual quotation, which allows the offer to reflect your application, your tooling and the layout of your site. Delivery, customs and support are arranged together with the quotation. To begin, please describe your process, the tool and part weights and your site location; the request form for a quotation is available on this page.

Frequently Asked Questions

What payload does the SR20A carry?

The SR20A has a payload of 20 kg. This allowance must cover the end effector as well as the workpiece, so both should be included when sizing the application.

What is the reach of the SR20A?

The reach is 1745 mm. Robots Europa can help you check whether this covers your fixture, conveyor or station layout before you commit.

How precise is the SR20A?

The repeatability is 0.1 mm, which is the figure that governs how consistently the arm returns to a taught position in welding, dispensing and assembly work.

How much does the arm weigh?

The SR20A weighs 500 kg. The foundation or pedestal should therefore be assessed during cell planning.

Does Robots Europa deliver the SR20A to Switzerland?

Yes. Robots Europa supplies customers across the EU and the DACH region, including Switzerland, and arranges delivery and customs together with the quotation.

Can the SR20A be used for remote TCP applications?

Yes, remote TCP is among the common applications Siasun lists for the SR20A, alongside welding, dispensing, assembly, material handling and additive manufacturing.

Where can I buy the SIASUN Industrial Robot Arm (SR20A) and what does it cost?

You can buy the SR20A from Robots Europa, which supplies customers across the EU and the DACH region. The cost depends on your configuration and project, so it is provided in an individual quotation that you can request on this page.

Summary

Whether the tool at the wrist is a torch, a nozzle or a gripper, the same three questions decide the choice of robot, and the SIASUN Industrial Robot Arm (SR20A) answers them directly: 20 kg of payload, 1745 mm of reach and 0.1 mm repeatability on a 6-axis arm. Its listed applications, from welding and dispensing to remote TCP and additive manufacturing, make it a versatile foundation for process cells. Robots Europa quotes, delivers and supports it as a single point of contact. For a project anywhere in the EU or the DACH region, this page is the starting point.