Payload 20kg Szgh-1820A MIG Welding Cobot Collaborative Robotic Arm

cobot SZGH-1820-A features a 2027 mm arm span, 20 kg payload, ±0.05 mm repeatability, and IP65 protection, with wide joint ranges (±360° for most axes) and maximum speeds up to 270°/s, making it suitable for high-precision, flexible automation applications.

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Classification:

Collaborative robots

Product Description

The SZGH-1820-A is a pioneering, heavy-duty 6-axis cobot engineered to redefine industrial flexibility by combining high-capacity lifting with fence-free human-machine collaboration. It boasts a massive 20kg payload capacity and an extended 2027mm working radius, allowing it to effortlessly handle bulky packaging, heavy metal castings, or complex dual-gripper setups across expansive dual-station CNC configurations or high-stack palletizing lines. Driven by a high-frequency 1KHz EtherCAT industrial bus control, this advanced cobot guarantees an exceptional ±0.05mm repeatability under continuous maximum-load operations, securing flawlessly smooth trajectory tracking for large-scale welding and precise material handling. Equipped with high-sensitivity electronic collision detection, it eliminates the need for bulky, expensive safety cages—saving up to 75% of your workshop floor space—while its intuitive hand-guiding (drag-and-drop) programming empowers non-technical staff to deploy new tasks in minutes, making high-mix, low-volume flexible production effortlessly agile.

SZGH-1820-A Technical Specifications

Iterm		Specifications
Robot model		SZGH-1820-A/szgh-1820-AW
Max Armspan		2027mm
Payload		20kg
Repeat Positioning		±0.05mm
Motion Range	J1	-360°～360°
	J2	-360°～360°
	J3	-165°～165°
	J4	-360°～360°
	J5	-360°～360°
	J6	-360°～360°
Max.speed	J1	180°/s
	J2	180°/s
	J3	210°/s
	J4	270°/s
	J5	270°/s
	J6	270°/s
Tool Max speed	4000mm/s
Noise level	60dB
Rate power	1500W
ControlBus/Freq	EtherCAT/1KHz
Temp	-5～55℃
Hum	5%～90%RH, (non-condensing)
Installation mode	Arbitrary angle
Weight	68kg

Optional: Robot Positioner

The SZGH-1820-A is an all-in-one, heavy-duty 6-axis collaborative welding workstation engineered for seamless fence-free industrial integration. It packs a massive 20kg payload capacity and an exceptional 2027mm extended reach, integrating an intelligent cobot arm, a digital welding power source, an automatic wire feeder, and a precision laser tracking sensor onto a heavy-duty mobile cart. Synchronized with a high-precision external welding positioner, the system enables continuous 360° multi-angle seam tracking and automatic workpiece flipping without manual intervention. Driven by a high-frequency 1KHz EtherCAT bus control that guarantees ±0.05mm repeatability, this turn-key solution eliminates bulky safety cages—saving 75% of your workshop floor space—while its intuitive drag-and-drop hand programming allows non-technical staff to deploy complex, multi-station welding paths in minutes.

Application Scenarios

Industry	Specific Application	Recommended Pairing
Heavy Piping & Infrastructure	Intelligent Heavy-Duty Pipe Spool Welding	Seamless Rotation & Real-time Tracking: The cobot works in perfect synchronization with the external positioner for 360° circumferential welds. The integrated laser tracking sensor dynamically adjusts the torch path to eliminate any gaps or thermal distortion
Automotive & Transportation	Dual-Station Automotive Chassis Fabrication	Maximized Duty Cycle & Fence-Free Setup: Its extended 1850mm reach spans across two positioners effortlessly. While the operator unloads a finished chassis from one side, the cobot welds safely on the other, using laser seam-finding to locate tight joints without stopping the line.
Chemical & Energy Equipment	Multi-Angle Custom Tank & Vessel Seaming	Precision Profile Scanning & Smooth Motion: Driven by a 1KHz EtherCAT bus, the cobot and external rotary axis move as one. The high-precision laser sensor scans complex bevel joints on curved stainless steel tanks ahead of the arc, delivering flawless penetration and premium aesthetic finishes.
MRO & Industrial Services	Mobile Fleet Maintenance & Reconditioning	Ultimate Mobility & Agile Programming: The entire turn-key station is integrated into a heavy-duty mobile cart that can be forklifted anywhere in minutes. Maintenance teams can easily use drag-and-drop hand programming to quickly re-weld and repair worn-out shafts or gears clamped on the positioner.

SZGH-2027A vs. SZGH-1415A — Model Selection Guide

The SZGH-1820-A represents a major hardware and heavy-industry scaling upgrade over the precision-focused SZGH-1415-A. While the 1415A remains the ultimate compact choice for agile standard welding (15kg payload / 1464.3mm reach), the 1820A is engineered to dominate heavy-duty, large-scale structural automation. Boasting a massive 20kg payload capacity (a 33% increase) and an ultra-extended 2027mm reach (a 26% expansion), the 1820A effortlessly manages heavier multi-functional tools, dual-gripper setups, and wider dual-station positioners. Furthermore, the 1820A upgrades its core joint motors to 750W high-torque density drives, providing the extra structural rigidity required to absorb continuous back-pressure from heavy grinding or multi-layer cladding on bulky components.

Model	SZGH-1820-A	SZGH-1415A
Reach	2027mm	1464.3mm
Payload	20kg	15kg
Repeatability	±0.05mm	±0.03mm
Robot Weight	68kg	36kg
rated power	1500w	550w
Temp	-5～55℃	-5～55℃

RFQ:

1. What is the main difference between buying the standalone cobot and the full workstation?

The standalone cobot is just the arm, while the full workstation is a plug-and-play system that includes the mobile cart, welder, laser tracker, and synchronized positioner.

2. Can the SZGH-1820-A handle materials other than standard carbon steel?

Yes, its advanced digital welding controls and precise speed adjustments allow it to flawlessly weld stainless steel, aluminum, and specialized alloys.

3. Why choose us?
Reliable quality, technical support, customized service, and competitive pricing.

4. What services do we provide?
Remote support, commissioning guidance, training, and after-sales service.

5.What is control mode for feeding Axes?
A5: Our Normal CNC support Pulse+Direction signals for feeding axes drivers; Our Modbus CNC support EtherCAT /Powerlink modbus for feeding axes drivers.