SIASUN SR360A-280/3.20 (SR360A-280/3.20)

A heavy arm earns its keep in the moments when it stops. Every start and stop sends a shudder through the structure, and on a long welding line those shudders add up to lost cycle time and worn parts. The SIASUN SR360A-280/3.20 (SR360A-280/3.20) is built around that problem: a backlash-free gearbox on the J5 axis, self-developed high-torque motors and a body with no counterweight, all aimed at a robot that is stiff, quick and easy to look after.

The SIASUN SR360A-280/3.20 is available through this page, by quotation.

Background

SIASUN and its lineage

SIASUN belongs to the China Academy of Sciences and was founded by its current CEO, Qu Daokui, in 2000. That research-institute origin shows in the way the company works: it develops core components in-house instead of only assembling parts bought elsewhere. The self-developed motors in this robot are one example of that approach.

The SR360A-280/3.20 sits in SIASUN's large-payload range of industrial robots. Buyers who know one SIASUN model can read the others with little effort.

Positioning and key technology

This robot combines high rigidity, high speed, easy maintenance and easy deployment. Each of those four claims rests on a specific design choice.

For rigidity, the J5 axis adopts a backlash-free gearbox. This raises the overall rigidity of the arm and reduces the vibration at start and stop. For speed, the robot is equipped with self-developed high-torque motors, which increase the spot welding rhythm by over 10%. For maintenance, the robot body features a no-counterweight design to lower the failure rate. For deployment, the control cabinet supports mainstream protocols and reserves expansion space.

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 axis motion ranges, the mounting options, the power supply, the controller model, the wrist moment and inertia ratings, the operating temperature range or the package contents; they are confirmed at quotation.

What makes the SR360A-280/3.20 different from a conventional heavy robot?

Many heavy robots carry a counterweight or similar balancing element to help the arm hold its load. The SR360A-280/3.20 does without one. That removes high-frequency moving parts and lowers the failure rate. Fewer parts that move all day means fewer parts that wear, and that is a plain advantage for a plant that cannot afford long stoppages.

The second difference is in the wrist area of the arm. The J5 axis uses a backlash-free gearbox. Backlash is the small play inside a gear train, and in a robot carrying a large load it turns into vibration every time the arm accelerates or brakes. Removing it adds rigidity to the whole arm and cuts the vibration at start and stop, so the arm settles faster and the cycle is not slowed by waiting for it to calm down.

The third difference is the drive. The self-developed high-torque motors increase the spot welding rhythm by over 10%. On a line that makes thousands of welds a shift, a gain of that size is worth having.

The arm pairs these traits with a payload of 280 kg (617.3 lbs), a reach of 3200mm and a repeatability of ±0.01mm. The wrist protection is IP67. Taken together, this is a robot meant for heavy, repetitive work where position accuracy and a protected wrist both matter.

How does the SR360A-280/3.20 fit into a production line?

A robot is only useful once it talks to the rest of the cell. The control cabinet supports mainstream communication protocols, which makes it easier to connect to the equipment around the robot. It also reserves expansion space, so the cell can grow without a new cabinet. The cabinet further reserves space for installing an external axis driver, which is helpful when the robot is to work with a positioner or a track.

This arrangement facilitates system integration and production line deployment. For an integrator, that means less time spent on the layout of the cabinet and more time on the application itself. For the end user, it means a cell that is easier to extend later.

Who is SIASUN SR360A-280/3.20 for?

This robot suits several kinds of buyers.

Automotive and metal-fabrication plants. Spot welding is the application the design points to, and the faster rhythm from the high-torque motors speaks directly to it.

System integrators. The cabinet with its mainstream protocols, expansion space and room for an external axis driver is designed with their work in mind.

Plants with heavy parts to move. A payload of 280 kg (617.3 lbs) and a reach of 3200mm cover large workpieces and tools.

Maintenance-minded operations. The no-counterweight body is intended to lower the failure rate, which matters to teams that carry the cost of downtime.

Buyers who want to compare the family can look at the SIASUN SR270A-270/2.70 (SR270A-270/2.70), whose figures are given on its own page, or browse the Large Payload category. The wider range is in Industrial Robots.

What is SIASUN SR360A-280/3.20 used for?

1. Spot welding. The high-torque motors increase the spot welding rhythm by over 10%, so this is the first application the design points to.
2. Heavy material handling. With a payload of 280 kg (617.3 lbs), the robot can move large parts and fixtures from one station to the next.
3. Production line integration. The control cabinet with mainstream protocols and reserved expansion space is made for connection into a larger line.
4. Work with an external axis. The cabinet reserves space for an external axis driver, so the robot can be added to a positioner or a similar axis.
5. Precise positioning tasks. A repeatability of ±0.01mm supports work where each cycle has to land in the same place.
6. Cells that need a protected wrist. The IP67 wrist protection suits stations where the end of the arm is exposed to its surroundings.

Pricing and Availability

No price is listed on this page, because the right configuration depends on your application, your cell and your location. Request a quotation and we will come back to you with the details. Delivery, customs and support are arranged together with the quotation, so that you have the whole picture in one place. The SIASUN SR360A-280/3.20 is available on this page.

Frequently Asked Questions

What payload and reach does the SR360A-280/3.20 offer?

The payload is 280 kg (617.3 lbs) and the reach is 3200mm.

How accurate is the robot?

The repeatability is ±0.01mm, which suits work where every cycle has to land in the same place.

What protection does the wrist have?

The wrist protection is IP67. That suits stations where the end of the arm is exposed to its surroundings.

Why does the J5 axis use a backlash-free gearbox?

It raises the overall rigidity of the arm and reduces the vibration at start and stop. That helps the arm settle quickly after each move.

What does the no-counterweight design change?

It removes high-frequency moving parts from the robot body, which lowers the failure rate. The result is a robot that is easier to maintain.

Can the control cabinet be extended?

Yes. The cabinet supports mainstream communication protocols, reserves expansion space and keeps room for an external axis driver. This eases system integration and line deployment.

Where can I buy the SR360A-280/3.20 and what does it cost?

You can buy it through this page, by quotation. We do not print a price here; send a request and the quotation will include delivery, customs and support.

Summary

The SR360A-280/3.20 answers a simple question: how do you keep a large robot from fighting its own motion? SIASUN's answer is a backlash-free J5 gearbox, high-torque motors and a body without a counterweight, backed by a payload of 280 kg (617.3 lbs), a reach of 3200mm, a repeatability of ±0.01mm and an IP67 wrist. A control cabinet with room to grow completes the picture. If that profile fits your line, this page is the starting point.