ESTUN S20-180 Pro:High-Payload 6-Axis Robot for Heavy Part Transfer
The ESTUN S20-180 Pro is a high-performance industrial collaborative robot engineered for heavy-duty material handling and large-scale automation.Combining a 20kg
payload capacity with a significant 1777.5mm reach,this model bridges the gap between traditional industrial power and the flexible safety of collaborative systems.

Equipped with 20-bit absolute encoders and high-accuracy torque sensors on all six axes,the S20-180 Pro delivers precision movement even at its maximum load.Its
industrial-grade motion control makes it the premier choice for automotive assembly,palletizing,and large-format part transfer where reliability and operator safety must coexist.
Core Technical Specifications
Degrees of Freedom(DOF):6-Axis
Rated Payload:20 kg
Maximum Reach:1777.5 mm
Pose Repeatability:±0.05 mm
Maximum Tool Speed:3.2 m/s
Ingress Protection:IP54(Standard)
Safety Certification:EN ISO 13849-1 PLd Cat.3
Communication Protocols:Modbus TCP,EtherCAT,RS485
Typical Power Consumption:0.75 kW
Manipulator Weight:59 kg
Engineering Features and Operational Advantages
The S20-180 Pro utilizes ESTUN’s proprietary kinematic compensation technology,ensuring that trajectory accuracy remains consistent regardless of the payload's weight.This
is critical for heavy part transfer,where centrifugal forces and inertia can often compromise the precision of lesser robotic arms.
Safety is integrated at the hardware level.The"Pro"series features adjustable collision detection and sensitive torque monitoring.In a collaborative workspace,the robot can
detect minute resistances and stop instantly,allowing it to operate without traditional safety fencing in many heavy-duty logistics scenarios.
Programming is simplified through a graphical user interface and"agile manual guidance."Despite its 20kg capacity,the arm can be moved easily by a single operator to"teach"
motion paths.This reduces the deployment time for complex tasks like CNC machine tending or automotive component palletizing.
High-Impact Application Scenarios
In the automotive sector,the S20-180 Pro is frequently used for transferring heavy sub-assemblies such as door panels or battery modules.Its 1777.5mm reach allows it to
service multiple stations,picking parts from a conveyor and placing them onto a moving assembly line with high precision.
The packaging and logistics industry adopts the S20-180 Pro for mid-to-high weight palletizing.The 20kg payload allows for the use of heavy-duty vacuum or mechanical
grippers to handle large boxes or sacks.Its speed of 3.2 m/s ensures that it keeps pace with high-speed production outputs.
Metal fabrication plants utilize the robot for machine tending and large-format part handling.It can easily manage the weight of metal blanks and the forces required for
loading and unloading heavy stamping presses or CNC milling centers,significantly improving factory-wide throughput.
Installation and Setup Procedures
Secure the S20-180 Pro to a reinforced steel base or a 7th-axis linear rail using the ISO 9409-1-50-6-M6 flange.Given the 20kg payload and long reach,the foundation must be
exceptionally rigid to prevent vibration during high-speed acceleration and deceleration phases.
Electrical integration is handled via the COB-A20 or CC20-A control cabinets.Ensure the power supply matches the 0.75kW typical rating and that the grounding is properly
established to protect the 20-bit encoders from electrical noise,which can occur in heavy industrial environments.
For communication,use the built-in EtherCAT or Modbus TCP ports to link the robot with plant-wide PLC systems.The 1777.5mm arm reach requires a clear"safety volume"setup
in the software to define working boundaries and avoid collisions with structural pillars or other machinery.
Maintenance and Safety Precautions
The S20-180 Pro is designed for 24/7 operation,but periodic inspection of the harmonic reducers is recommended.Because it handles heavier loads,checking the grease
condition and ensuring no heat buildup occurs at the joints will prolong the lifespan of the precision mechanical components.
When handling parts at the 20kg limit,always verify the center of gravity(COG)in the robot’s software.An incorrect COG calculation can lead to premature wear of the motors
and may trigger false collision detection events during high-speed movements.
Only authorized personnel should perform maintenance on the S20-180 Pro.Always disconnect the main power before servicing and utilize the STO(Safe Torque Off)functions
when entering the robot's workspace for teaching or inspection to ensure total operator protection.
Frequently Asked Questions(FAQ)
What is the maximum reach and payload capacity of the S20-180 Pro?
The ESTUN S20-180 Pro is designed to handle heavy-duty tasks with a maximum payload of 20 kg.This capacity includes the weight of the end-effector and the workpiece,allow
ing it to handle substantial components in automotive and metalworking industries.
With a maximum reach of 1777.5 mm,this robot provides a vast working envelope.It can easily span across wide conveyor belts or reach deep into large CNC machines,making
it one of the most versatile collaborative robots currently available for large-scale industrial floor layouts.
The combination of these two factors makes it a"heavyweight"in the cobot category.While many collaborative robots are limited to smaller tasks,the S20-180 Pro provides
the muscle needed for palletizing and part transfer without sacrificing the safety benefits of human-robot collaboration.
How does the S20-180 Pro maintain precision with heavy loads?
The S20-180 Pro utilizes 20-bit absolute encoders that provide extreme resolution for position detection.These encoders allow the control system to monitor the exact angle of
every joint with sub-millimeter accuracy,even when the arm is fully extended with a 20 kg load.
Furthermore,the robot employs advanced kinematic compensation and vibration suppression algorithms.These software features identify the dynamic stresses caused by heavy
payloads and adjust the motor torque in real-time to counteract inertia,ensuring smooth motion and high trajectory accuracy.
Before shipping,every unit undergoes rigorous kinematic calibration using laser trackers.This process creates a custom mathematical profile for each robot,compensating for
microscopic mechanical variations and ensuring that the±0.05 mm repeatability is maintained throughout the robot's entire service life.
Is the S20-180 Pro safe to use without safety cages?
The S20-180 Pro is a fully certified collaborative robot that complies with EN ISO 13849-1 PLd Cat.3 safety standards.It features integrated torque sensors in all six joints that
detect external contact and trigger an immediate stop to prevent injury to nearby personnel.
Users can program"Safety Zones"where the robot automatically reduces its speed when a human enters the area.This allows for a flexible working environment where the robot
can run at full speed when alone but switches to a safer,force-limited mode during collaborative tasks.
However,a formal risk assessment is always required for any industrial installation.While the robot itself is safe,the specific end-of-arm tool or the sharp edges of a heavy
workpiece may still require additional safety measures like light curtains or area scanners to ensure total compliance.
What communication protocols does the S20-180 Pro support?
For seamless integration into modern smart factories,the S20-180 Pro supports several industry-standard protocols.These include Modbus TCP/RTU,EtherCAT,and RS485,
allowing the robot to communicate with PLCs,vision systems,and other factory-wide automation controllers.
The inclusion of EtherCAT is particularly significant for high-speed synchronization.It allows the robot to work in perfect harmony with 7th-axis linear rails or 2-axis welding
positioners,making it part of a larger,highly coordinated multi-axis motion control system.
Additionally,the robot is compatible with the E-Noesis cloud platform.This allows for remote data collection and performance monitoring,enabling predictive maintenance
strategies that reduce downtime by identifying potential mechanical issues before they lead to a system failure.
How easy is it to program the S20-180 Pro for new tasks?
The S20-180 Pro features a user-friendly graphical interface that can be mastered in a very short time.Even operators without extensive coding experience can create complex
motion sequences using intuitive drag-and-drop function blocks on the 10.1-inch teach pendant screen.
For faster setup,the robot supports"Agile Manual Guidance."Despite its 59 kg weight,the arm is balanced to allow an operator to physically move the robot through a path.The
robot records these points,which can then be fine-tuned in the software for precision.
The software also includes specialized packages for common tasks such as palletizing and machine tending.These wizards guide the user through the setup process,asking for
box dimensions or pallet patterns,and automatically generate the necessary motion paths and safety boundaries.
What are the environmental requirements for this robot?
The S20-180 Pro is rated IP54,which protects the internal motors and electronics from dust and water splashes.This makes it suitable for standard factory environments,
including metal processing shops where some airborne particles and moisture may be present.
The operating temperature range is between 0 and 50 degrees Celsius.While it can handle the heat of a busy production floor,it is important to ensure that the control cabinet
has adequate ventilation and is not placed directly next to high-heat sources like industrial ovens.
In environments with high humidity or chemical vapors,users can opt for a protective"robot suit."These custom-fit covers protect the robot's finish and joint seals,allowing the
S20-180 Pro to operate in more aggressive atmospheres without compromising its long-term mechanical reliability.
Can the S20-180 Pro handle high-speed palletizing?
With a maximum tool-end speed of 3.2 m/s,the S20-180 Pro is one of the fastest collaborative robots in its class.This high speed,combined with its 20 kg payload,allows it to
meet the cycle time requirements of most high-volume packaging and logistics lines.
The robot's long reach of 1777.5 mm is a major advantage for palletizing,as it can reach all four corners of a standard pallet and stack to a significant height.This reach reduces
the need for expensive lifting columns or complex multi-robot handoff systems.
ESTUN provides a professional palletizing software package specifically for this model.This allows users to define complex stacking patterns and handle mixed-size boxes,
optimizing pallet space and ensuring that loads are stable for transportation without manual intervention.
What kind of power supply does the S20-180 Pro require?
The S20-180 Pro and its COB-A20 control cabinet typically require a standard AC 100-240V power supply.This wide input range makes it compatible with electrical systems
around the world,making it an ideal choice for international OEMs and system integrators.
The typical power consumption during operation is approximately 0.75 kW,which is remarkably efficient for a robot with such high payload and reach.This low energy footprint
contributes to lower overall operational costs and supports corporate"green"manufacturing initiatives.
It is highly recommended to use a dedicated and grounded power circuit to prevent electromagnetic interference from affecting the robot’s precision sensors.Proper
grounding is essential for the 20-bit encoders to provide the steady,accurate feedback needed for industrial-grade repeatability.
How does the S20-180 Pro compare to the S10-140 Pro?
The S20-180 Pro is the larger and more powerful sibling of the S10-140 Pro.While the S10 model offers a 10 kg payload and 1400 mm reach,the S20 doubles that payload to
20 kg and extends the reach to 1777.5 mm,suitable for significantly larger workpieces.
Mechanically,the S20 is a heavier unit at 59 kg compared to the S10's 38 kg.This extra weight is used to provide the structural rigidity needed to handle larger loads and longer
extensions without compromising the±0.05 mm repeatability required for industrial tasks.
Choosing between the two depends on your specific application.If you are performing high-precision welding or small part assembly,the S10 may be more agile;however,for
heavy part transfer and large-scale palletizing,the S20-180 Pro is the superior industrial choice.
What maintenance is required for the robot’s sixth-axis flange?
The sixth-axis flange is the most active part of the robot and is where the end-of-arm tooling is attached.It should be inspected regularly for any loose bolts or signs of wear,
especially in high-speed applications where the wrist is under constant rotational stress.
Ensure that the cables running to the tool are secured and have enough slack for the full±360-degree rotation.Using a"cable management system"is recommended to prevent
the wires from rubbing against the robot arm,which can eventually lead to electrical failures or short circuits.
In dispensing or dirty environments,the flange area should be cleaned periodically to prevent the buildup of materials that could interfere with the tool change process.Keeping
the ISO 9409-1-50-6-M6 mounting surface clean ensures a perfect mechanical connection and maintains the system's overall precision.
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a one-stop integrated service provider of intelligent manufacturing, belongs to the Gong Doctor Group, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1). Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3). At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.