Side-by-side comparison of SR360A-280/3.20 (SIASUN) and UNISTAR UN-1820A Laser Welding Robot Arm (ShanDong Unistar Machinery Co., Ltd.) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Healthcare & Hospitals buyers. Priority specs lifted to the top and marked with a target.
Manufacturer Country

Verified Deployments

Price Range (USD)

Availability Status

Repeatability

IP Rating (Arm)

Reach

Payload

Degrees of Freedom

IP Rating (Wrist)

Duty Cycle

Teach Pendant Type

Internal Cable Routing

Price (USD)

Warranty

Service Network

![]() | UNISTAR UN-1820A Laser Welding Robot Armindustrial-armShanDong Unistar Machinery Co., Ltd. 22.3Product Score | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | China | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | Contact for quote | $6,800 |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Repeatability (priority for Healthcare & Hospitals buyers) (values differ) | ±0.1 mm | ±0.05 mm |
| IP Rating (Arm) (priority for Healthcare & Hospitals buyers) (values differ) | IP65 | — |
| Reach (priority for Healthcare & Hospitals buyers) (values differ) | 400 mm | — |
| Payload (values differ) | 4 kg | — |
| Degrees of Freedom | 6 | 6 |
| IP Rating (Wrist) (values differ) | IP67 | IP54 |
| Performance | ||
| Duty Cycle | continuous 24 7 | continuous 24 7 |
| Controller & Programming | ||
| Teach Pendant Type | wired touch | wired touch |
| End-Effector | ||
| Internal Cable Routing (values differ) | through arm | — |
| Commercial | ||
| Price (USD) (values differ) | Contact for quote | $6,800 |
| Warranty (values differ) | — | 1 yrs |
| Service Network (values differ) | 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, Robot Weight, Cycle Time (25/305/25), MTBF, Vibration Damping, Safety Category, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Controller Model, Programming Languages, Offline Programming, Digital Twin Support, Communication Protocols, ROS-Industrial Support, IoT / Cloud Platform, Cybersecurity Certs, Predictive Maintenance, Tool Flange Standard, Tool Changer (ISO), Pneumatic Lines, Electrical Lines, Spare Parts Lead Time, Expected Service Life
Frequently asked
SR360A-280/3.20 is made by SIASUN, based in CN. UNISTAR UN-1820A Laser Welding Robot Arm is made by ShanDong Unistar Machinery Co., Ltd..
SR360A-280/3.20 scores 29/100. UNISTAR UN-1820A Laser Welding Robot Arm scores 22/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
SR360A-280/3.20 has a reach of 2833 mm. UNISTAR UN-1820A Laser Welding Robot Arm 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
SR360A-280/3.20 vs UNISTAR UN-1820A Laser Welding Robot Arm 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.
Other comparisons