SIASUN Industrial Robot Arm with 3053 mm Reach, 120kg Max Payload, 6 DOF (SR210-120/3.05)

In many heavy-handling cells, the hard constraint is not how much the robot must lift but how far it must stretch: a fixture on one side, a conveyor on the other, a machine door somewhere in between. The SIASUN Industrial Robot Arm with 3053 mm Reach, 120kg Max Payload, 6 DOF (SR210-120/3.05) is designed around that geometry first. Its 3,053 mm maximum working radius allows a single upright-mounted arm to serve stations that might otherwise need a linear track or a second robot, while its 120 KG payload keeps substantial grippers, welding tooling and heavy workpieces within its rating.

Robots Europa, based in Dublin, sells the SR210-120/3.05 to manufacturers, system integrators and research organisations across the European Union and the DACH region. We prepare each quotation against the cell it is intended for, arrange delivery to your site, and remain your point of contact for technical questions and support once the arm is in production.

Background

SIASUN and its research roots

SIASUN is a Chinese robotics and automation manufacturer based in Shenyang, with origins in the Shenyang Institute of Automation of the Chinese Academy of Sciences. That research background shows in the breadth of its portfolio, which covers articulated industrial arms, mobile robots and complete automation systems for factory floors. For European buyers, SIASUN offers an alternative to the long-established Japanese and European arm manufacturers, with a range that extends from compact arms for light assembly to heavy-payload models for automotive and metalworking lines. You can browse the wider family in our Robot Arms category.

A long-reach configuration within a heavy-payload family

The sources name three versions within this part of the range: the SR210-120/3.05 described on this page, the SR210A-210/2.65 and the SR210A-210/3.05-DW. The SR210-120/3.05 is the long-reach member of the group, built for applications in which the working envelope matters more than the absolute weight carried. It is driven by the SIASUN SRC E5 controller and is specified for upright installation, which places it on the floor or on a pedestal at the base of the cell. Buyers weighing reach against payload across SIASUN's heavier models will find the related arms in our Large Payload category.

Technical Specifications

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

The manufacturer has not published the arm's weight, the axis speeds, the axis ranges of motion, the power supply voltage, the operating temperature range, the included accessories or the software; all of these are confirmed at quotation.

What does a 3,053 mm working radius mean in a production cell?

Reach determines layout. An arm with a long working radius can stand at the centre of a cell and serve several points around it: an infeed conveyor, a machining centre, an inspection station and an outfeed pallet, for example. With a shorter arm, the same layout often calls for the robot to travel on a seventh-axis track, or for the work to be split between two robots, each adding cost, floor space and programming effort. The SR210-120/3.05 has a maximum working radius of 3,053 mm, which gives planners considerable room to arrange stations without moving the base.

The payload rating is the other half of the calculation. At 120 KG, the arm can carry a heavy end effector together with its workpiece, which is relevant wherever the tooling itself is substantial: welding guns, vacuum grippers for large panels, or multi-part fingers for castings. Integrators should still check the load diagram for the actual tool and part combination, because the usable payload at full extension depends on the centre of gravity and inertia of the load. The ±0.1 mm repeatability means the arm returns to taught positions consistently, which matters for machine loading, fixture placement and weld seams programmed point by point.

The 8 KVA power capacity is a practical planning figure: it tells the electrical engineer what supply the cell must provide for the arm and its SRC E5 controller, and it can be worked into the electrical design from the earliest stage of a project.

How does the SR210-120/3.05 differ from the SR210A-210 versions?

The three versions are designed for different priorities, and choosing the wrong one is a common source of redesign later in a project. The SR210-120/3.05 is the version this page covers, and every figure in the table above belongs to it alone. The SR210A-210/2.65 and the SIASUN Industrial Robot Arm (SR210A-210/3.05-DW) are separate models with their own datasheets, and their figures should not be read across to this arm.

In practice, the decision usually comes down to which constraint binds first. Where the cell is wide and the load moderate, a long-reach configuration such as the SR210-120/3.05 is the natural starting point. Where the load is the governing factor, a heavier-rated sibling may be the better fit, and Robots Europa can set the datasheets side by side in a single quotation so that your engineers compare like with like.

Who is the SR210-120/3.05 for?

The arm is aimed first at manufacturers who are automating heavy, repetitive work in cells where stations are spread out: automotive suppliers, metalworking and fabrication shops, foundries and producers of large components. For these buyers, the combination of reach and payload can simplify a cell layout that would otherwise require additional axes.

System integrators form the second group. They need predictable figures to design around, and the payload, working radius, repeatability and power capacity provide the starting points for reach studies, load checks and electrical planning. A third group consists of universities and applied research centres that study heavy-payload manipulation, welding processes or digital-twin simulation of production lines.

Buyers whose application is purely end-of-line stacking may find a dedicated palletising arm more economical, such as the SIASUN Industrial Palletizing Robot Arm (SP120A-120/2.50). Those whose loads exceed this arm's rating should look at the heavier models in the range, including the SIASUN Industrial Robot Arm (SR500A-360/2.83). We are happy to advise on which model best suits your cell.

What is the SR210-120/3.05 used for?

1. Heavy material handling: moving castings, forgings and large components between conveyors, fixtures and storage.
2. Machine tending: loading and unloading machining centres, presses and moulding machines from a single central position.
3. Welding: carrying welding guns or torches along seams on large assemblies such as frames and structural parts.
4. Palletising and depalletising: building and breaking down loads where pallets sit at a distance from the pick point.
5. Assembly of large parts: positioning heavy subassemblies for joining, fastening or bonding operations.
6. Processing tasks: guiding grinding, deburring or polishing tools across workpieces that demand a wide envelope.

Pricing and Availability

Robots Europa supplies the SR210-120/3.05 on a quotation basis, because the right configuration depends on your application, your tooling and the cell into which the arm will be integrated. Tell us what the arm needs to carry, where it will be installed and which stations it must reach, and we will prepare a quotation that reflects that brief. Delivery, customs clearance and technical support are arranged together with the quotation. To begin, use the quotation request available on this page.

Frequently Asked Questions

What payload does the SR210-120/3.05 carry?

The arm is rated for a payload capacity of 120 KG. The usable load for your application depends on the tool and part geometry, so the load diagram should be checked for your combination.

How far does the arm reach?

The maximum working radius is 3,053 mm. This allows a single upright-mounted arm to serve several stations without a linear track.

How accurate is the SR210-120/3.05?

Its repeatability is ±0.1 mm. This describes how consistently the arm returns to a taught position.

Which controller does the arm use?

The SR210-120/3.05 runs on the SIASUN SRC E5 controller.

How is the arm installed?

The arm is specified for upright installation. If your layout calls for a different mounting position, please discuss it with our team before planning the cell.

Can Robots Europa compare this arm with other SIASUN models?

Yes. We can set the SR210-120/3.05 alongside its SR210A siblings and other SIASUN arms so that your engineers can weigh reach against payload for the cell in question.

Where can I buy the SIASUN SR210-120/3.05 and what does it cost?

You can buy the SR210-120/3.05 from Robots Europa, which supplies customers across the EU and the DACH region. Pricing is provided by individual quotation, prepared to match your application and delivery requirements.

Summary

The SR210-120/3.05 is a robot chosen for the shape of the cell as much as for the weight of the part. A 3,053 mm working radius, a 120 KG payload, ±0.1 mm repeatability and the SRC E5 controller make it a candidate wherever stations are spread out and loads are substantial, from machine tending to welding and heavy handling. Robots Europa quotes, delivers and supports it across the EU and the DACH region. If your next cell needs one arm to reach where two would otherwise stand, this page is the starting point.