Liujiang 331R vs SZGH-1820-A
Side-by-side comparison of Liujiang 331R (Dongguan Rongan Electromechanical Equipment Co., Ltd.) and SZGH-1820-A (Shenzhen Guanhong Automation Co., Ltd.) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Manufacturing buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- Liujiang 331RChina
- SZGH-1820-AChina
Verified Deployments
- Liujiang 331R0 Deployments
- SZGH-1820-A0 Deployments
Layer 2: Operational
Price Range (USD)
- Liujiang 331R$3,800
- SZGH-1820-A$1,999–$12,688
Availability Status
- Liujiang 331RACTIVE
- SZGH-1820-AACTIVE
Arm Mechanics
Reach
- Liujiang 331R300 mm
- SZGH-1820-A1,850 mm
Repeatability
- Liujiang 331R±0.2 mm
- SZGH-1820-A±0.05 mm
Payload
- Liujiang 331R8 kg
- SZGH-1820-A6 kg
Degrees of Freedom
- Liujiang 331R3
- SZGH-1820-A6
Robot Weight
- Liujiang 331R55 kg
- SZGH-1820-A165 kg
Performance
Duty Cycle
- Liujiang 331Rnot specified
- SZGH-1820-Acontinuous 24 7
Safety
Dual Check Safety
- Liujiang 331RNo
- SZGH-1820-A—
Controller & Programming
Controller Model
- Liujiang 331R运动控制卡
- SZGH-1820-AIntegrated (All-In-One)
Teach Pendant Type
- Liujiang 331Rtouch screen control
- SZGH-1820-A—
Digital Twin Support
- Liujiang 331RNo
- SZGH-1820-A—
Connectivity
ROS-Industrial Support
- Liujiang 331Rnone
- SZGH-1820-A—
End-Effector
Tool Changer (ISO)
- Liujiang 331Rnone
- SZGH-1820-A—
Internal Cable Routing
- Liujiang 331Rexternal only
- SZGH-1820-A—
Commercial
Price (USD)
- Liujiang 331R$3,800
- SZGH-1820-A$1,999–$12,688
Warranty
- Liujiang 331R—
- SZGH-1820-A2 yrs
Service Network
- Liujiang 331Rregional
- SZGH-1820-Aregional
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country | China | China |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $3,800 | $1,999–$12,688 |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Reach (priority for Manufacturing buyers) (values differ) | 300 mm | 1,850 mm |
| Repeatability (priority for Manufacturing buyers) (values differ) | ±0.2 mm | ±0.05 mm |
| Payload (priority for Manufacturing buyers) (values differ) | 8 kg | 6 kg |
| Degrees of Freedom (values differ) | 3 | 6 |
| Robot Weight (values differ) | 55 kg | 165 kg |
| Performance | ||
| Duty Cycle (values differ) | not specified | continuous 24 7 |
| Safety | ||
| Dual Check Safety (values differ) | No | — |
| Controller & Programming | ||
| Controller Model (values differ) | 运动控制卡 | Integrated (All-In-One) |
| Teach Pendant Type (values differ) | touch screen control | — |
| Digital Twin Support (values differ) | No | — |
| Connectivity | ||
| ROS-Industrial Support (values differ) | none | — |
| End-Effector | ||
| Tool Changer (ISO) (values differ) | none | — |
| Internal Cable Routing (values differ) | external only | — |
| Commercial | ||
| Price (USD) (values differ) | $3,800 | $1,999–$12,688 |
| Warranty (values differ) | — | 2 yrs |
| Service Network | regional | regional |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Year First Available, Battery / Shift Runtime, Path Accuracy, Max TCP Speed, IP Rating (Arm), IP Rating (Wrist), Cycle Time (25/305/25), MTBF, Vibration Damping, Safety Category, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Programming Languages, Offline Programming, Communication Protocols, IoT / Cloud Platform, Cybersecurity Certs, Predictive Maintenance, Tool Flange Standard, Pneumatic Lines, Electrical Lines, Spare Parts Lead Time, Expected Service Life
best in categoryweakest in categoryvalues differ
Trade-offs at a glance
Frequently asked
Who makes Liujiang 331R and SZGH-1820-A?
Liujiang 331R is made by Dongguan Rongan Electromechanical Equipment Co., Ltd., based in CN. SZGH-1820-A is made by Shenzhen Guanhong Automation Co., Ltd., based in CN.
How do Liujiang 331R and SZGH-1820-A compare on the Robolist Product Score?
Liujiang 331R scores 37/100. SZGH-1820-A scores 47/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
How does the reach of Liujiang 331R compare to SZGH-1820-A?
Liujiang 331R has a reach of 300 mm. SZGH-1820-A has a reach of 1850 mm.
Are Liujiang 331R and SZGH-1820-A in the same category?
Both robots are classified as Industrial Arm on Robolist. Filters and ranking treat them as direct alternatives.
What is the realistic total cost of ownership for Industrial Arm robots?
Hardware cost is one input. Industrial Arm TCO also includes integration, training, downtime, and end-of-life. Our breakdown: TCO of a 6-Axis Arm Cell: Hardware, EOAT, Integration, Programming.
What should a buyer ask vendors when choosing between Liujiang 331R and SZGH-1820-A?
Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: Industrial Arm Vendor Selection: Capability Matrices and Proof Points.
Going deeper — picking the right robot
TCO of a 6-Axis Arm Cell: Hardware, EOAT, Integration, Programming
7 min readIndustrial Arms
Industrial Arm Vendor Selection: Capability Matrices and Proof Points
9 min readIndustrial Arms
Programming Approaches: Teach Pendant, Offline, AI-Assisted — What Each Costs You
8 min readIndustrial Arms
Build vs buy vs lease: which model fits a first deployment
8 min readChoosing Your First Robot
The hidden specs vendors hope you'll miss
10 min readReading the Spec Sheet
About this comparison
Liujiang 331R vs SZGH-1820-A compares two robots in the industrial-arm category. All data is sourced from manufacturer spec sheets, verified deployments, and third-party filings; see our methodology for how the Robolist Product Score is calculated.