Side-by-side comparison of CoboWeld (ShanDong Unistar Machinery 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 Last-Mile Delivery buyers. Priority specs lifted to the top and marked with a target.
Manufacturer Country

Verified Deployments

Price Range (USD)

Availability Status

Payload

Reach

Degrees of Freedom

Repeatability

Max TCP Speed

Robot Weight

Duty Cycle

Safety Category

Controller Model

Teach Pendant Type

Tool Flange Standard

Internal Cable Routing

Price (USD)

Warranty

Service Network

![]() | ||
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | — | China |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $7,200 | $1,999–$12,688 |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Payload (priority for Last-Mile Delivery buyers) (values differ) | 9 kg | 6 kg |
| Reach (values differ) | 2,400 mm | 1,850 mm |
| Degrees of Freedom | 6 | 6 |
| Repeatability | ±0.05 mm | ±0.05 mm |
| Max TCP Speed (values differ) | 0.1 m/s | — |
| Robot Weight (values differ) | — | 165 kg |
| Performance | ||
| Duty Cycle | continuous 24 7 | continuous 24 7 |
| Safety | ||
| Safety Category (values differ) | other | — |
| Controller & Programming | ||
| Controller Model (values differ) | — | Integrated (All-In-One) |
| Teach Pendant Type (values differ) | no pendant (browser UI) | — |
| End-Effector | ||
| Tool Flange Standard (values differ) | ISO 9409-1 | — |
| Internal Cable Routing (values differ) | through arm and wrist | — |
| Commercial | ||
| Price (USD) (values differ) | $7,200 | $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, IP Rating (Arm), IP Rating (Wrist), Cycle Time (25/305/25), MTBF, Vibration Damping, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Programming Languages, Offline Programming, Digital Twin Support, Communication Protocols, ROS-Industrial Support, IoT / Cloud Platform, Cybersecurity Certs, Predictive Maintenance, Tool Changer (ISO), Pneumatic Lines, Electrical Lines, Spare Parts Lead Time, Expected Service Life
Frequently asked
CoboWeld is made by ShanDong Unistar Machinery Co., Ltd.. SZGH-1820-A is made by Shenzhen Guanhong Automation Co., Ltd., based in CN.
CoboWeld 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.
CoboWeld has a reach of 2400 mm. SZGH-1820-A has a reach of 1850 mm.
Both robots are classified as Industrial Arm on Robolist. Filters and ranking treat them as direct alternatives.
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.
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
CoboWeld 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.