SIASUN Industrial Robot Arm with 580mm Reach, 4kg Max Payload, 6 DOFs (SN4A-4/0.58)

Inside a machine tool, every millimetre is contested. The spindle, the fixture, the chip guard and the door all claim the same narrow volume, and any robot sent in to load a part has to share that space without touching any of them. The SIASUN Industrial Robot Arm with 580mm Reach, 4kg Max Payload, 6 DOFs (SN4A-4/0.58) is built for exactly this kind of crowded workspace. Rather than competing on reach or lifting capacity, it offers access: a compact, lightweight structure with internal wiring, a streamlined exterior and a wrist protected to IP67, intended for handling, assembly and loading work where a larger arm would not fit.

Robots Europa, based in Dublin, supplies the SN4A-4/0.58 to manufacturers, system integrators and research facilities throughout the European Union and the DACH region. We prepare quotations for single units as well as for projects involving several cells, and we coordinate delivery, documentation and after-sales support from Dublin, so that the arm arrives on your production floor ready for integration.

Background

SIASUN and its robotics lineage

SIASUN is a Chinese robotics and automation manufacturer headquartered in Shenyang, with origins in the country's academic research on automation. Over the years the company has built a portfolio that spans industrial robot arms, mobile robots and complete automation systems for factory and logistics applications. Its articulated arm range covers a wide span of sizes, from compact models such as the SN4A-4/0.58 up to heavy-duty machines such as the SIASUN Industrial Robot Arm with 2833mm Reach, 360kg Max Payload, 6 DOFs (SR500A-360/2.83). Within that family, the SN4A-4/0.58 occupies the small, precise end of the scale, where the priority is fitting into confined cells rather than moving heavy loads.

Compact design and motion control

Three design decisions define this arm. First, the cabling runs internally and the exterior is streamlined, which reduces the risk of hoses and cables catching on fixtures or machine guards and keeps the envelope clean around the arm. Second, SIASUN applies a variable acceleration algorithm that exploits the mechanical performance limits of the arm, with the aim of stable, efficient operation and maximised production efficiency. Third, high-precision global error compensation brings the repeat positioning accuracy to ±0.02mm. A modular design completes the picture, making application integration easier and more compact for the engineer who has to fit the robot, its tooling and its periphery into a limited footprint.

Technical Specifications

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

SIASUN has not published the arm's weight, axis speeds, joint ranges, power supply, controller model, communication interfaces, operating temperature, approved mounting orientations, cycle time or the contents of the delivery; these details are confirmed at quotation.

What makes the SN4A-4/0.58 suited to tight spaces?

Most robot selection starts with payload and reach, but in compact automation the decisive question is often whether the arm can physically operate in the space available. The SN4A-4/0.58 answers that question through its construction. Its structure is compact and lightweight, and SIASUN positions it explicitly for scenarios with demanding space requirements, naming 3C factories and the interior of machine tools as typical environments.

The internal wiring matters more here than it might on a large, open cell. Externally routed cables need clearance, can snag on guards and tend to wear where they flex. Keeping them inside the arm, combined with a streamlined outer shape, allows the robot to move closer to fixtures and enclosure walls. The modular design supports the same goal from the integration side: it makes it easier to build a compact application around the arm, rather than enlarging the cell to suit the robot.

The IP67 rating of the wrist is also relevant in this context. The wrist is the part of the arm that reaches furthest into the process, and inside a machine tool it is the part most likely to meet coolant or dust. A protected wrist therefore suits the very environments for which the arm is intended.

How does the SN4A-4/0.58 hold its precision at speed?

Small robots in electronics assembly and machine loading are usually asked to do two things at once: move quickly and place parts exactly. These goals pull in different directions, because aggressive motion tends to introduce vibration and positioning error. SIASUN addresses the speed side with its variable acceleration algorithm, which adapts acceleration to make full use of the arm's mechanical limits while keeping operation stable.

On the accuracy side, the arm relies on high-precision global error compensation, through which the repeat positioning accuracy reaches ±0.02mm. For a buyer, the practical consequence is that the SN4A-4/0.58 is designed for tasks where a part must return to the same nest, fixture or chuck cycle after cycle. Combining both approaches in one compact arm means that speed and precision are not traded against each other as sharply as they often are in small cells, which is why the robot is positioned for production work rather than occasional handling.

Who is the SN4A-4/0.58 for?

The arm is aimed first at manufacturers of 3C products, that is computers, communications equipment and consumer electronics, where production lines are dense, parts are light and placement must be repeatable. Machine-tool users and builders form a second group: job shops and production plants that want to automate the loading and unloading of machining centres, and machine builders who want to integrate a robot inside their equipment rather than beside it.

System integrators who design compact cells will also find the modular design and the streamlined, internally wired arm useful when the customer's floor space is limited. Research laboratories and training centres looking for a small industrial arm for handling and assembly experiments may also consider it.

Where the work involves heavier parts or a longer reach, a larger model is the better choice. Within the SIASUN family, buyers who need more payload and working range can consider the SIASUN Industrial Robot Arm with 2010mm Reach, 12kg Max Payload, 6 DOFs (SR25A-12/2.01) or the SIASUN Industrial Robot Arm (SR25A-25/1.80). The full selection is available in our Robot Arms category, and the wider SIASUN range in Industrial Robots.

What is the SN4A-4/0.58 used for?

1. Handling: moving light components between conveyors, trays and fixtures in compact cells.
2. Assembly: placing and joining small parts where repeatable positioning decides the quality of the result.
3. Machine loading and unloading: working inside machine tools to feed and remove workpieces without a separate external cell.
4. 3C production: supporting electronics and consumer-device lines where space between stations is tight.
5. Compact cell integration: forming the core of small, modular automation cells built around a limited footprint.
6. Process-adjacent tasks: operating close to processes where the wrist may be exposed to coolant or dust, thanks to its IP67 protection.

Pricing and Availability

Robots Europa supplies the SN4A-4/0.58 on the basis of an individual quotation, prepared for your application and your site. Tell us what the arm is to handle, where it will be installed and which equipment it must work with, and we will prepare the configuration that suits your project. Delivery, customs and support are arranged together with your quotation. To begin, please use the quotation request form available on this page.

Frequently Asked Questions

What payload and reach does the SN4A-4/0.58 offer?

The arm has a payload of 4kg and a reach of 580mm. This places it among compact robots for light handling, assembly and machine loading.

How repeatable is the SN4A-4/0.58?

Its repeatability is ±0.02mm. SIASUN achieves this through high-precision global error compensation.

Is the arm protected against dust and liquids?

The wrist is rated IP67. This suits it to work close to processes where coolant or dust is present.

Can the SN4A-4/0.58 be installed inside a machine tool?

Yes, SIASUN names the interior of machine tools as one of the space-critical environments for which this compact, lightweight arm is suited.

What design features help with integration?

The arm combines internal wiring, a streamlined exterior and a modular design. Together these make it easier to build a compact application around the robot.

Does Robots Europa support integration projects?

Robots Europa coordinates delivery and after-sales support from Dublin for customers in the EU and the DACH region. The scope of support for your project is set out in the quotation.

Where can I buy the SN4A-4/0.58 and what does it cost?

You can buy the SIASUN SN4A-4/0.58 from Robots Europa, which supplies it across the EU and the DACH region. The cost depends on your configuration and project, so we provide it in an individual quotation that you can request on this page.

Summary

In a machine tool or on a dense electronics line, the space around the process is the real constraint, and the SN4A-4/0.58 is designed around it. A compact, lightweight structure, internal wiring and a streamlined exterior let it work where larger arms cannot go; an IP67 wrist suits it to the process zone; and a variable acceleration algorithm together with global error compensation keeps motion efficient while holding repeatability at ±0.02mm. With a 4kg payload and 580mm reach, it is a focused tool for handling, assembly and loading in confined cells. For a quotation from Robots Europa, tailored to your application, this page is the starting point.