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

Most robot arms are chosen for what they can lift. The SIASUN Industrial Robot Arm with 580mm Reach, 4kg Max Payload, 6 DOFs (SN4A-4/0.58) is chosen for what it leaves free: floor space, enclosure volume and room for the rest of the cell. Where a larger arm would crowd out the fixtures, this one works beside them and still holds a repeatability of ±0.02mm.

The product is available through this page, by quotation.

Background

SIASUN and the SN4A line

SIASUN builds industrial robot arms across a wide span of sizes, from small handling units to very large payload machines. The SN4A-4/0.58 sits at the small end of that range, while models such as the SR500A-360/2.83 serve heavy work at the other end. Each model name carries working figures, and in the SN4A-4/0.58 those are 4kg of payload and 580mm of reach.

Buyers who want to see the whole range can browse the Industrial Robots category or the wider Robot Arms category. At the small end, the design priorities are size, precision and ease of integration rather than raw lifting power, and that is where this arm earns its place.

Positioning and key technology

The SN4A-4/0.58 has a compact and lightweight structure that suits applications with demanding space requirements, such as 3C factories and the inside of machine tools. Several design choices support that positioning.

First, the robot has internal wiring and a streamlined exterior. With no cables hanging off the arm, there is less to snag on a fixture, a door frame or a tool, and the outline stays clean in a tight workspace.

Second, the arm uses a variable acceleration algorithm. It draws fully on the mechanical performance limits of the arm, which keeps operation stable and efficient and lifts production efficiency.

Third, the design is modular. This makes application integration easier and more compact, a real advantage when the robot has to be fitted into an existing cell instead of a purpose-built one.

Finally, high-precision global error compensation brings the repeat positioning accuracy to ±0.02mm. For a small arm that places small parts, that is the figure that decides whether a station runs clean or throws rejects.

Technical Specifications

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

The manufacturer has not published the weight, the axis speeds, the joint ranges, the power supply, the controller model, the communication interfaces, the operating temperature, the mounting orientation, the contents of the box or the cycle time; they are confirmed at quotation.

What makes the SN4A-4/0.58 different from larger SIASUN arms?

The difference starts with the size of the job. A larger arm such as the SIASUN Industrial Robot Arm with 2010mm Reach, 12kg Max Payload, 6 DOFs (SR25A-12/2.01) is built to cover a wide area and carry a heavier load. The SN4A-4/0.58 is built for the opposite case, where the reach is 580mm, the payload is 4kg, and the whole task happens in a small volume.

That smaller envelope is an advantage, not a limit. A robot sized to the task is easier to place near a machine, simpler to fit into a compact cell, and does not need a large swept area around it. Its compact and lightweight structure is what lets it work in places a bigger arm cannot enter, such as the interior of a machine tool.

Precision is the second point. The ±0.02mm repeatability, supported by global error compensation, suits fine work like placing small parts or feeding a fixture, where position errors show up quickly as rejected pieces.

Integration is the third. Internal wiring and a modular design mean the arm goes into a station without a tangle of external cable runs, and the finished cell stays compact. On a crowded shop floor, that tidiness saves commissioning time and makes later maintenance easier to plan.

How does the arm keep its motion fast and stable?

Speed in a small robot is often limited by how gently the controller has to treat the mechanics. The SN4A-4/0.58 addresses this with a variable acceleration algorithm. Rather than applying one fixed acceleration profile everywhere, the algorithm adapts, so the arm can use more of what the mechanics allow while staying stable.

The practical result is stable and efficient operation with higher production efficiency. Because your own takt requirement drives the real decision, bring your cycle targets when you ask for a quotation and we will go through them together.

The IP67 rating on the wrist is a further point in its favor. The wrist is the part of the arm that goes closest to the work, and inside a machine tool that can mean coolant, dust and chips. A protected wrist is a sensible feature for that environment.

Who is the SN4A-4/0.58 for?

The first group is makers of electronics and other 3C products. Their lines handle small, light parts at close tolerances, and floor space is valuable. A compact six-axis arm with fine repeatability matches that setting well.

The second group is machine shops and integrators who want to automate loading and unloading of machine tools. Because the arm is designed to work inside machine tools, it can serve a machine without redesigning the cell around it.

The third group is integrators building compact assembly or handling stations. The modular design and internal wiring help them keep the installation tidy and the footprint small.

If your parts are heavier or your stations are spread over a wider area, a larger arm will suit you better. In that case look at the SIASUN Industrial Robot Arm (SR25A-25/1.80) or the other arms in the Robot Arms category.

What is the SN4A-4/0.58 used for?

1. Handling. Moving small parts between stations, trays and fixtures within a short reach.
2. Assembly. Placing and joining components where repeatable positioning matters.
3. Loading and unloading. Feeding workpieces into a machine and taking finished parts out again.
4. Work inside machine tools. Operating in the tight interior space where a compact, lightweight arm is needed.
5. 3C factory automation. Supporting production of consumer electronics, computers and communication devices in limited floor space.
6. Compact integrated cells. Building small, tidy stations around the modular design and internal wiring.

Pricing and Availability

Pricing is handled by quotation and depends on your configuration and project. Tell us your application, your quantity and your destination, and we will prepare an offer. Delivery, customs and support are arranged together with the quotation, so there are no surprises later. The SIASUN Industrial Robot Arm (SN4A-4/0.58) is available on this page.

Frequently Asked Questions

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

The payload is 4kg and the reach is 580mm. It has six degrees of freedom.

How accurate is it?

The repeatability is ±0.02mm, supported by high-precision global error compensation.

Is the arm protected against dust and water?

The wrist carries an IP67 rating, which suits work close to the part where dust and coolant are common.

Can it work inside a machine tool?

Yes. Its compact and lightweight structure is well suited to demanding space requirements, such as 3C factories and the inside of machine tools.

What tasks is it designed for?

The application areas are handling, assembly, and loading and unloading.

Does it have internal cabling?

Yes. The arm has internal wiring and a streamlined exterior, which keeps the outline clean in tight spaces.

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

You can request it through this page, and the price is provided by quotation after we know your requirements. Delivery, customs and support are arranged at the same time.

Summary

The SN4A-4/0.58 is a robot chosen for what it leaves free. Its 580mm reach and 4kg payload keep it small, its ±0.02mm repeatability keeps it precise, and its internal wiring, modular design and IP67 wrist make it practical in crowded, demanding places. For loading, handling and assembly in a tight space, it deserves a close look. To discuss your application, this page is the starting point.