SIASUN SR50A-70/2.15 (SR50A-70/2.15)

Grinding and handling pull a robot in opposite directions. A grinding head needs an arm that will not yield when the abrasive meets the workpiece; a handling cell needs an arm that travels quickly between stations and stops exactly where it is told. The SIASUN SR50A-70/2.15 is built to answer both demands in the same machine: a medium-payload industrial robot with a stiff, efficient transmission, servo control tuned to stay steady at speed, and a wrist sealed to IP65 against the dust and coolant that surface finishing inevitably produces.

Robots Europa supplies the SIASUN SR50A-70/2.15 from Dublin to manufacturers and system integrators throughout the European Union and the DACH region. We prepare each quotation for the configuration you require, arrange delivery to your site and remain your point of contact for technical support once the robot has entered production.

Background

SIASUN and its industrial robot lineage

SIASUN is a Chinese robotics manufacturer headquartered in Shenyang, with its origins in the Shenyang Institute of Automation of the Chinese Academy of Sciences. Over the years the company has built a broad portfolio of automation equipment, and its SR series of industrial robots covers a wide spread of payload classes, from compact arms for light assembly through to heavy-duty machines for large components. The SR50A family occupies the middle of that range, which is where a great deal of everyday factory work takes place: parts and tools too heavy for a small arm, yet not so heavy that a large machine would make economic sense.

Positioning: a rigid arm for handling and finishing

SIASUN describes the SR50A-70/2.15 as an industrial robot specially designed for medium-payload applications. Its design rests on three mechanical qualities: high rigidity, high inertia and high transmission efficiency. Together they govern how well an arm resists deflection under load and how much of its motor power actually reaches the tool. Advanced servo drive technology and a high-precision control system keep the robot stable and precisely positioned during high-speed operation, while a variable acceleration algorithm shortens the overall cycle. The outcome is a robot that excels in medium-scale material handling and grinding, two tasks that place quite different demands on a manipulator but reward the same underlying stiffness.

Technical Specifications

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

SIASUN has not published the robot's weight, axis speeds, axis motion ranges, power supply, controller model, mounting options, operating temperature, wrist moment and inertia ratings or package contents; Robots Europa confirms each of these with your quotation.

How does the SR50A-70/2.15 improve on the previous generation?

The most tangible change is speed. SIASUN combined a high-rigidity transmission design with a variable acceleration algorithm, and the result is faster overall cycle times, with axis speeds significantly increased over the previous generation and a 20% improvement in efficiency. In a handling cell that runs around the clock, a gain of that order translates directly into more parts per shift from the same floor space, or into the headroom to add an inspection or marking step without slowing the line.

The second change is mass. The robot body is 10% lighter than its predecessor. A lighter arm has less of its own weight to accelerate and decelerate on every move, which supports the faster cycle, and it places less demand on the foundation or pedestal on which it stands. Because SIASUN has not published the absolute weight, the exact figure for your foundation design is part of the information we confirm when we quote.

Neither gain has been bought at the expense of precision. The servo drives and high-precision control system are there to keep the robot stable and accurately positioned at higher speeds, and the repeatability of ±0.05mm means a gripper or tool returns to the same point cycle after cycle. For users replacing older equipment, that combination of more speed and unchanged repeatability is usually the argument that matters most.

What does the SR50A-70/2.15 grinding kit system add?

SIASUN offers the SR50A-70/2.15 as a kit system for grinding, pairing the robot with a dual-head force-controlled tool intended for medium- to heavy-duty applications. Force control is what separates robotic finishing from simple path following: rather than pressing the abrasive along a fixed trajectory regardless of what it meets, a force-controlled tool regulates the contact pressure, so that variations in casting tolerances or part fixturing do not produce gouges in one place and untouched surface in another. A dual-head arrangement allows two finishing stages to be carried on the same tool, reducing the number of tool changes within a cycle.

Grinding also explains several details of the arm itself. High rigidity keeps the tool steady against reaction forces, the IP65 wrist protects the most exposed part of the robot from abrasive dust and coolant, and the J6 motor has full-body protection. The J6 axis also carries an integrated spiral cable, which prevents interference between the robot's internal wiring and the user's external cables, a frequent source of wear and downtime when hoses and signal lines for a finishing tool are routed to the end of the arm.

Who is the SIASUN SR50A-70/2.15 for?

The first group is metalworking businesses that finish parts: foundries removing gates and parting lines, fabricators blending welds, and suppliers of machined components who need consistent surface quality without relying entirely on manual grinding. For these users the grinding kit system offers a defined starting point, and the protected wrist and J6 motor suit the environment.

The second group is manufacturers with medium-scale material handling: loading and unloading machines, transferring components between conveyors and fixtures, or building up loads at the end of a line. Here the 70 kg (154.3 lbs) payload leaves room for a substantial gripper as well as the part, and the 2158mm reach lets a single robot serve several stations.

The third group is system integrators across the EU and the DACH region who design complete cells and need a medium-payload arm with a clear specification and a supplier able to support the project. Plants modernising older robots of the previous generation also belong here, given the gains in efficiency and weight.

The family also includes the SR50A-50/2.15. The fact sheet available to us does not carry figures for that version, so we compare the two on request when we prepare your quotation. If your parts and tooling are considerably lighter, our Small Payload range may be the more proportionate choice, and the full line-up is available in our Industrial Robots category.

What is the SIASUN SR50A-70/2.15 used for?

1. Grinding: medium- to heavy-duty surface grinding with the dual-head force-controlled kit system.
2. Deburring and fettling: removing burrs, gates and flash from castings and machined parts with controlled contact pressure.
3. Weld blending and polishing: bringing welded and formed surfaces to a uniform finish ahead of coating or assembly.
4. Machine tending: loading and unloading machine tools, presses and test stations in continuous operation.
5. Material handling: transferring medium-weight components between conveyors, fixtures and storage positions.
6. End-of-line handling: placing finished parts into containers or onto load carriers ready for dispatch.

Pricing and Availability

Robots Europa prices the SIASUN SR50A-70/2.15 by quotation, because the final configuration depends on your application: the robot alone, the grinding kit system, or a complete cell prepared together with your integrator. Tell us about your parts, cycle targets and site, and we will return a quotation with the specification confirmed against the manufacturer's datasheet. Delivery, customs clearance and technical support are arranged with the quotation, so you know from the outset how the robot will reach your site and who will look after it. To begin, the quotation request for the SIASUN SR50A-70/2.15 is available on this page.

Frequently Asked Questions

What payload and reach does the SIASUN SR50A-70/2.15 offer?

The SR50A-70/2.15 carries a payload of 70 kg (154.3 lbs) and has a reach of 2158mm. This places it in the medium-payload class, suited to substantial grippers and finishing tools.

How precise is the SR50A-70/2.15?

Its repeatability is ±0.05mm. Advanced servo drives and a high-precision control system keep it stable and accurately positioned during high-speed operation.

Is the robot suitable for dusty or wet working conditions?

The wrist is rated IP65, and the J6 motor has full-body protection. We can advise on the protection of the remainder of the arm for your particular environment when we prepare your quotation.

Can the SR50A-70/2.15 be used for grinding?

Yes. SIASUN offers an SR50A-70/2.15 kit system with a dual-head force-controlled tool for medium- to heavy-duty grinding.

How are external cables managed at the wrist?

The J6 axis has an integrated spiral cable that prevents interference between the robot's internal wiring and your external cables. This reduces the risk of wear where tool lines run to the end of the arm.

Is it faster than the previous generation?

Yes. Axis speeds are significantly higher, efficiency is 20% better and the robot body is 10% lighter than its predecessor.

Where can I buy the SIASUN SR50A-70/2.15 and what does it cost?

You can buy the SIASUN SR50A-70/2.15 from Robots Europa, which supplies customers across the EU and the DACH region from Dublin. The cost depends on the configuration you choose, so we provide it in a tailored quotation that you can request on this page.

Summary

The tension between grinding and handling is a matter of stiffness versus speed, and the SIASUN SR50A-70/2.15 resolves it by offering both. A rigid, efficient transmission and precise servo control hold the tool firmly against the workpiece; a variable acceleration algorithm and a lighter body deliver a 20% improvement in efficiency over the previous generation. With a 70 kg (154.3 lbs) payload, 2158mm of reach, ±0.05mm repeatability, an IP65 wrist and a dedicated force-controlled grinding kit, it is a capable centre for finishing and handling cells alike. Robots Europa quotes, delivers and supports it throughout the EU and the DACH region, and for your project this page is the starting point.