SIASUN SA20A-20/0.80 (SA20A-20/0.80)

Most SCARA arms earn their keep moving parts you could pinch between two fingers: screws, chips, small housings, all shifted at speed across a bench. The SIASUN SA20A-20/0.80 (SA20A-20/0.80) is built for a different job. It keeps the compact, fast horizontal motion that makes SCARA kinematics popular, but it is designed to carry heavy, bulky components through pick-and-place, handling and assembly cycles where a lightweight arm would flex, drift or simply give up. The interest of this robot lies in that tension between agility and load.

Robots Europa, based in Dublin, sells the SIASUN SA20A-20/0.80 to manufacturers and system integrators across the European Union and the DACH region. Robots Europa prepares each quotation, arranges delivery to your site and remains your point of contact for support after the robot is installed.

Background

SIASUN and the SA20A series

SIASUN is a Chinese manufacturer of industrial robots whose catalogue spans articulated arms and SCARA models. The SA20A series is presented by the manufacturer as a new generation of its SCARA robots, developed around three priorities: high inertia, strong rigidity and high precision. Within the series the sources name two versions, the SA20A-20/0.80 described on this page and the SIASUN SA20A-20/1.00 (SA20A-20/1.00). Each version has its own specification, and the figures on this page apply to the SA20A-20/0.80 only.

SIASUN has also developed its own programming software, SN, which accompanies the series alongside more traditional teaching tools. This tells you something about the intended buyer: the series is aimed at production lines that want a heavy-duty arm which can still be set up and retaught without a lengthy engineering project.

Rigidity as the core idea

A heavy payload on a SCARA arm is as much a question of structure as of motor torque. On the SA20A series, both the X and Y axes are equipped with a double-support structure, which the manufacturer states further enhances rigidity. A stiffer arm holds its path more faithfully when a substantial mass is accelerated and stopped, and that is where precision under load is won or lost.

Two further design choices support the same goal. The series uses a modular design, intended to cover more automation scenarios while reducing maintenance costs, and its wiring is routed internally, which removes the need for corrugated tubes and reduces the spatial constraints that external cable packs impose on a cell layout.

Technical Specifications

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

SIASUN has not published the power supply requirements, the controller model, the communication interfaces, the operating temperature range, the mounting orientation or the package contents for this robot; Robots Europa confirms each of them with your quotation.

Why choose a heavy-payload SCARA instead of a six-axis robot?

When a component is too heavy for a standard SCARA, the reflex is often to specify a six-axis articulated robot. For many tasks that is more robot than the application needs. Pick-and-place, handling and vertical assembly are fundamentally planar movements followed by a vertical stroke, and a SCARA performs exactly that motion with fewer axes to programme, a smaller footprint and a simpler kinematic chain.

The SA20A-20/0.80 brings that logic to loads of 20 kg (44 lbs). Its repeatability of ±0.025mm across J1+J2, ±0.01mm on the vertical J3 axis and ±0.01° on the rotational J4 axis means the extra mass does not come at the expense of placement accuracy. The 3rd joint also delivers a press-fit force of 250 N, so the same arm that carries a part into position can push it home, which matters in mechanical assembly where pins, bearings or housings must be seated rather than merely set down.

A six-axis robot remains the right answer where parts must be tilted, reoriented in several planes or reached around obstacles. Where the task is a heavy, repeated, top-down movement, a rigid SCARA such as this one is the more economical and more focused choice.

What does the double-support structure change in practice?

The practical effect of the double-supported X and Y axes is confidence in the cycle. Heavy end effectors and heavy parts generate considerable inertia every time the arm starts and stops; a less rigid arm responds with deflection and settling time. By reinforcing both axes, SIASUN aims to keep the arm stable under high inertia, which is precisely what the series is designed to tolerate.

The internal wiring complements this in daily operation. Without corrugated tubes swinging around the arm, there is less to snag on fixtures, less to wear out and more freedom in where peripheral equipment can be placed. Combined with the modular design and its stated aim of reducing maintenance costs, the result is a robot meant for long production runs rather than occasional use.

Programming flexibility rounds out the picture. The SA20A series supports the SN programming software, a teach pendant, a virtual teach pendant and drag-to-teach functionality. Engineers can build programmes offline, technicians can adjust points on the shop floor, and operators can guide the arm by hand to record positions when a product changes.

Who is the SIASUN SA20A-20/0.80 for?

The clearest fit is manufacturing where components are large and loads are high. SIASUN names lithium battery and automotive parts manufacturing explicitly, and both sectors share the profile this robot addresses: heavy modules, housings and sub-assemblies that must be placed accurately, again and again, across shifts.

System integrators building cells for these industries are a second audience. The compact SCARA format, internal cable routing and choice of teaching methods make the robot straightforward to integrate into a cell and to hand over to a customer's own team.

Plants concerned about the total cost of running automation will also find the modular design relevant, as the manufacturer positions it as a way to reduce maintenance costs.

Buyers whose layout calls for a different working envelope should compare this model with its sibling, the SIASUN SA20A-20/1.00, whose figures are given on its own page. Where parts are lighter and a 20 kg class arm is not required, the wider SCARA range offers smaller models, and the full SIASUN Industrial Robots category covers articulated alternatives.

What is the SIASUN SA20A-20/0.80 used for?

1. Large component pick-and-place — moving bulky parts between conveyors, fixtures and trays with SCARA speed and placement accuracy.
2. Heavy-duty handling — transferring substantial workpieces within a cell where a lighter arm would lack the rigidity.
3. Mechanical assembly under high load — positioning and joining heavy sub-assemblies with consistent repeatability.
4. Press-fitting — using the 3rd joint's press-fit force of 250 N to seat pins, bushings or components after placement.
5. Lithium battery manufacturing — handling and assembling cells, modules and related components in battery production lines.
6. Automotive parts manufacturing — loading, unloading and assembling heavier automotive components in supplier and OEM plants.

Pricing and Availability

Robots Europa supplies the SIASUN SA20A-20/0.80 on a quotation basis, so that the configuration, accessories and documentation match your application. Delivery, customs and support are arranged with the quotation. To receive a tailored offer for your site in the EU or the DACH region, use the quotation request available on this page.

Frequently Asked Questions

What payload does the SIASUN SA20A-20/0.80 handle?

The SA20A-20/0.80 has a payload of 20 kg (44 lbs), placing it among the heavier-duty SCARA robots.

What is the reach of this robot?

The reach is 800mm. Its sibling, the SA20A-20/1.00, has its own specification, which you will find on its product page.

How accurate is the SA20A-20/0.80?

Repeatability is ±0.025mm for J1+J2, ±0.01mm for J3 and ±0.01° for J4.

Is the robot suitable for wet or dusty environments?

The protection rating is IP20, a rating intended for clean, dry indoor installations rather than wash-down or heavily contaminated areas. Robots Europa can discuss your environment when preparing the quotation.

How is the robot programmed?

The SA20A series supports SIASUN's own SN programming software, a teach pendant, a virtual teach pendant and drag-to-teach functionality, so programmes can be created offline or taught directly on the arm.

Which controller and interfaces does it use?

SIASUN has not published the controller model or the communication interfaces for this robot. Robots Europa confirms both, together with the power supply requirements, at quotation.

Where can I buy the SIASUN SA20A-20/0.80 and what does it cost?

You can buy the SIASUN SA20A-20/0.80 from Robots Europa, which supplies customers across the EU and the DACH region. The cost depends on configuration and delivery requirements, so please request a quotation through this page.

Summary

The SIASUN SA20A-20/0.80 resolves the tension that usually limits SCARA robots: it keeps their compact footprint and efficient planar motion while carrying loads of 20 kg (44 lbs) across an 800mm reach. Double-supported X and Y axes provide the rigidity to cope with high inertia, internal wiring keeps the cell uncluttered, the modular design targets lower maintenance costs, and a choice of programming and teaching methods keeps the robot accessible to the people who run the line. For heavy pick-and-place, handling, press-fitting and assembly in sectors such as lithium battery and automotive parts manufacturing, it offers a focused alternative to a larger six-axis arm. Robots Europa quotes, delivers and supports it across Europe, and for your project this page is the starting point.