SIASUN HC-X4-B (HC-X4-B)

On most factory floors the collaborative robot stays exactly where it was bolted down, and the parts, trays and fixtures have to be brought to it. The SIASUN HC-X4-B reverses that arrangement. It belongs to SIASUN's DUCO family of mobile collaborative robots, in which a self-developed mobile platform and a collaborative robot are integrated into a single machine that travels to the task, carries up to 120kg Max on its platform and works to an overall accuracy of ±0.3mm once it arrives. For a plant whose real bottleneck is the distance between stations rather than the work done at them, that combination changes the planning question from where to mount a robot to where to send it next.

Robots Europa, based in Dublin, supplies the SIASUN HC-X4-B to customers throughout the European Union and the DACH region. Robots Europa prepares each quotation against the configuration and application you describe, coordinates delivery to your site and remains your point of contact for technical support once the robot is in service.

Background

SIASUN and the DUCO mobile collaborative robot line

DUCO is the name under which SIASUN offers its mobile collaborative robots. The defining idea of the line is integration: rather than pairing a third-party vehicle with an arm from another supplier, SIASUN develops the mobile platform itself and combines it with a collaborative robot, so that chassis, arm and controls are designed to work as one system. The sources name several versions in the family, namely the HC-X2-B, HC-X3-B, HC-X4-B, HC-X6-B, HC-X2-L and HC-X2-T. Each can be fitted with SIASUN's own vision systems, grippers and other execution units, which is what turns a mobile base with an arm into a tool for material handling, assembly, inspection or precision processing.

One machine, one screen, one wheel system

Three design choices define how the HC-X4-B behaves in daily use. The first is an integrated teaching pendant: a single screen handles visual interaction and debugging for both the mobile platform and the collaborative arm, so the engineer commissioning the cell does not have to move between two separate programming environments, which shortens deployment. The second is a chassis wheel system designed specifically for the mobile collaborative robot, intended to give greater stability and reliability than a generic vehicle base when an arm is working on top of it. The third is flexible charging: contact-based, wireless and automatic charging methods are supported, which allows the robot to be operated in short sessions, topped up in real time between tasks or run around the clock. Comprehensive safety protection covers both the ground around the vehicle and the airspace in which the arm moves, with real-time protection to allow safe collaboration between people and the robot.

Technical Specifications

Specifications are as published by the manufacturer and are confirmed against the datasheet at quotation. SIASUN has not published the total weight, battery capacity, running time or charging time of this version, nor the model of cobot arm supplied, the IP rating, the noise level or the contents of the box; each of these is confirmed with your quotation.

What makes a mobile collaborative robot different from a fixed cobot?

A fixed collaborative robot is productive only while work is brought within its reach. In practice, that means conveyors, carts or operators walking parts to and from the cell, and a robot that sits idle whenever the supply chain around it falters. A mobile collaborative robot such as the HC-X4-B carries its own arm to the point of work, so a single unit can serve several stations in turn, take over the transport step that a person would otherwise perform and continue with the handling or processing task on arrival.

The difficulty with this approach has always been precision. A vehicle never stops in exactly the same place twice, and an arm mounted on it inherits that uncertainty. This is why the overall accuracy figure matters: the HC-X4-B achieves ±0.3mm as a complete system, which is the figure that counts when the robot has to place a part into a fixture after driving to it. The integrated design also removes a familiar integration burden. Because the platform and the arm come from the same manufacturer and are programmed from one teaching pendant, there is no need to make two control systems from different vendors cooperate, and the safety concept covers the vehicle's surroundings and the arm's working space together.

How does the HC-X4-B find its way around a site?

The HC-X4-B uses SLAM & QR CODE navigation. SLAM, short for simultaneous localisation and mapping, allows a mobile robot to build a map of its surroundings and locate itself within it using its sensors, so it can move through a facility without fixed tracks or magnetic tape in the floor. QR codes placed at defined points give the robot fixed reference markers, which is helpful where repeatable positioning at a particular station is required. Combining the two is a common way of pairing the flexibility of free navigation with dependable reference points at the places where the arm has to work. The footprint of 800*600*700mm and the platform load of 120kg Max should be assessed against your aisle widths, station layouts and the loads to be carried; Robots Europa reviews these points with you before delivery.

Who is the SIASUN HC-X4-B for?

The HC-X4-B is aimed at manufacturers and operators who want to automate a sequence of tasks spread across a site rather than a single fixed operation. Typical buyers include production plants that run several machining or assembly stations with intermittent loading needs, electronics and component manufacturers who combine transport with careful placement, and quality departments that wish to bring inspection to the line rather than parts to a laboratory. Facilities planning multi-shift or continuous operation will also find the choice of contact-based, wireless and automatic charging relevant, as it supports operation around the clock.

The DUCO family offers further versions, including the SIASUN HC-X2-B (HC-X2-B), the SIASUN HC-X3-B (HC-X3-B) and the SIASUN HC-X6-B (HC-X6-B), as well as the HC-X2-L and HC-X2-T. If you are unsure which version matches your loads and layout, Robots Europa will compare them for your application. Where a task does not require mobility at all, a stationary arm from our Robot Arms range or the wider Industrial Robots category may be the more economical choice.

What is the SIASUN HC-X4-B used for?

1. Material handling between stations – collecting parts or trays at one point and delivering them to the next, then loading them with the arm.
2. Assembly – carrying the arm to an assembly station and performing joining or placement steps with suitable grippers.
3. Inspection – combining SIASUN vision systems with the mobile platform to check parts directly at the line.
4. Precision processing – carrying out processing tasks that rely on the system's overall accuracy of ±0.3mm.
5. Continuous shift operation – using automatic, contact-based or wireless charging to keep the robot working around the clock.
6. Shared workspaces – operating alongside staff, with real-time ground and airspace protection designed for human-robot collaboration.

Pricing and Availability

Robots Europa supplies the SIASUN HC-X4-B on the basis of an individual quotation, as the final configuration depends on the arm, end effectors, vision system and charging method your application requires. Please describe the tasks, loads and environment you have in mind, and Robots Europa will prepare a quotation for your configuration. Delivery, customs and support are arranged with the quotation. The quotation request form for the SIASUN HC-X4-B is available on this page.

Frequently Asked Questions

What load can the HC-X4-B platform carry?

The platform load of the HC-X4-B is 120kg Max, a figure that relates to the mobile platform.

How accurate is the HC-X4-B?

The HC-X4-B has an overall accuracy of ±0.3mm.

Which navigation method does the robot use?

The HC-X4-B navigates with SLAM & QR CODE, combining map-based localisation with QR code markers as fixed reference points.

How is the robot charged?

Contact-based, wireless and automatic charging methods are supported, allowing short-term, real-time and around-the-clock operation.

Can the HC-X4-B work safely next to people?

Yes, it provides ground and airspace safety with real-time protection, designed to enable safe human-robot collaboration. Your own risk assessment for the specific application remains necessary.

How is the robot programmed?

An integrated teaching pendant provides a single screen for visual interaction and debugging of both the mobile platform and the collaborative arm, which speeds up deployment.

Where can I buy the SIASUN HC-X4-B and what does it cost?

You can buy the SIASUN HC-X4-B from Robots Europa, which supplies customers across the EU and the DACH region from Dublin. The cost depends on your configuration and is set out in an individual quotation, which you can request on this page.

Summary

The SIASUN HC-X4-B is built for operations in which the work is spread out and a stationary robot would spend much of its time waiting. By integrating a self-developed mobile platform with a collaborative robot, it brings the arm to the task, carries up to 120kg Max on its platform and works to an overall accuracy of ±0.3mm at its destination. SLAM & QR CODE navigation, ground and airspace safety, a single teaching pendant for vehicle and arm, a purpose-built wheel system and flexible charging options complete a system intended to move as readily as it works. Robots Europa supplies, delivers and supports it across the EU and the DACH region. If you want your robot to go to the work rather than wait for it, this page is the starting point.