KR 120 R3900-2 K vs Welding Robot RH06A3-1700
Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and Welding Robot RH06A3-1700 (GSK CNC Equipment Co., Ltd.) — specs, pricing, Robo Index, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Cleaning & Facilities buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- KR 120 R3900-2 KGermany
- Welding Robot RH06A3-1700China
Year First Available
- KR 120 R3900-2 K2015
- Welding Robot RH06A3-1700—
Verified Deployments
- KR 120 R3900-2 K0 Deployments
- Welding Robot RH06A3-17000 Deployments
Layer 2: Operational
Price
- KR 120 R3900-2 K$19,000–$84,900 USD
- Welding Robot RH06A3-1700$10,000–$100,000 USD
Availability Status
- KR 120 R3900-2 KACTIVE
- Welding Robot RH06A3-1700ACTIVE
Arm Mechanics
Robot Weight
- KR 120 R3900-2 K42 kg
- Welding Robot RH06A3-1700185 kg
Payload
- KR 120 R3900-2 K146 kg
- Welding Robot RH06A3-17006 kg
Reach
- KR 120 R3900-2 K3,904 mm
- Welding Robot RH06A3-17001,700 mm
Degrees of Freedom
- KR 120 R3900-2 K6
- Welding Robot RH06A3-17006
Repeatability
- KR 120 R3900-2 K±0.04 mm
- Welding Robot RH06A3-1700±0.05 mm
IP Rating (Arm)
- KR 120 R3900-2 KIP65
- Welding Robot RH06A3-1700IP54
IP Rating (Wrist)
- KR 120 R3900-2 KIP67
- Welding Robot RH06A3-1700—
Performance
Duty Cycle
- KR 120 R3900-2 K—
- Welding Robot RH06A3-1700continuous 24 7
Controller & Programming
Controller Model
- KR 120 R3900-2 KKR C5, KR C5 micro
- Welding Robot RH06A3-1700GSK CNC Controller
Programming Languages
- KR 120 R3900-2 K—
- Welding Robot RH06A3-1700Chuangzhi C Programming Language
Teach Pendant Type
- KR 120 R3900-2 K—
- Welding Robot RH06A3-1700wired button
Offline Programming
- KR 120 R3900-2 K—
- Welding Robot RH06A3-1700GSK Off-line Programming System
Connectivity
ROS-Industrial Support
- KR 120 R3900-2 K—
- Welding Robot RH06A3-1700none
End-Effector
Tool Flange Standard
- KR 120 R3900-2 K—
- Welding Robot RH06A3-1700ISO 9409-1
Internal Cable Routing
- KR 120 R3900-2 K—
- Welding Robot RH06A3-1700external only
Commercial
Price (USD)
- KR 120 R3900-2 K$19,000–$84,900 USD
- Welding Robot RH06A3-1700$10,000–$100,000 USD
Warranty
- KR 120 R3900-2 K2 yrs
- Welding Robot RH06A3-17001 yrs
Service Network
- KR 120 R3900-2 Kglobal
- Welding Robot RH06A3-1700regional
Expected Service Life
- KR 120 R3900-2 K—
- Welding Robot RH06A3-170010 yrs
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Germany | China |
| Year First Available (values differ) | 2015 | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | $19,000–$84,900 USD | $10,000–$100,000 USD |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Robot Weight (priority for Cleaning & Facilities buyers) (values differ) | 42 kg | 185 kg |
| Payload (priority for Cleaning & Facilities buyers) (values differ) | 146 kg | 6 kg |
| Reach (values differ) | 3,904 mm | 1,700 mm |
| Degrees of Freedom | 6 | 6 |
| Repeatability (values differ) | ±0.04 mm | ±0.05 mm |
| IP Rating (Arm) (values differ) | IP65 | IP54 |
| IP Rating (Wrist) (values differ) | IP67 | — |
| Performance | ||
| Duty Cycle (values differ) | — | continuous 24 7 |
| Controller & Programming | ||
| Controller Model (values differ) | KR C5, KR C5 micro | GSK CNC Controller |
| Programming Languages (values differ) | — | Chuangzhi C Programming Language |
| Teach Pendant Type (values differ) | — | wired button |
| Offline Programming (values differ) | — | GSK Off-line Programming System |
| Connectivity | ||
| ROS-Industrial Support (values differ) | — | none |
| End-Effector | ||
| Tool Flange Standard (values differ) | — | ISO 9409-1 |
| Internal Cable Routing (values differ) | — | external only |
| Commercial | ||
| Price (USD) (values differ) | $19,000–$84,900 USD | $10,000–$100,000 USD |
| Warranty (values differ) | 2 yrs | 1 yrs |
| Service Network (values differ) | global | regional |
| Expected Service Life (values differ) | — | 10 yrs |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Battery / Shift Runtime, Path Accuracy, Max TCP Speed, Cycle Time (25/305/25), MTBF, Vibration Damping, Safety Category, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Digital Twin Support, Communication Protocols, IoT / Cloud Platform, Cybersecurity Certs, Predictive Maintenance, Tool Changer (ISO), Pneumatic Lines, Electrical Lines, Spare Parts Lead Time
ROI Comparison
Same operating assumptions across every robot — the only difference is price. Set your numbers once to see which pays back fastest.
Annual labor displaced (per robot): $50,000
| Metric | KR 120 R3900-2 K | Welding Robot RH06A3-1700 |
|---|---|---|
| Investment | $51,950 | $55,000 |
| Payback period | 12.5 mo | 13.2 mo |
| Net savings (5 yr) | $198,050 | $195,000 |
| ROI (5 yr) | +381% | +355% |
Estimates labor-cost displacement only — not a full total cost of ownership. Actual ROI depends on integration, maintenance, training, downtime, and task fit. Converted currencies are indicative; USD is the price of record.
Trade-offs at a glance
Frequently asked
Who makes KR 120 R3900-2 K and Welding Robot RH06A3-1700?
KR 120 R3900-2 K is made by KUKA Robotics, based in DE. Welding Robot RH06A3-1700 is made by GSK CNC Equipment Co., Ltd., based in CN.
How do KR 120 R3900-2 K and Welding Robot RH06A3-1700 compare on the Robo Index?
KR 120 R3900-2 K grades AAA on the Robo Index. Welding Robot RH06A3-1700 grades A. The Robo Index is a credibility grade (AAA … C) that blends commercial maturity, verified deployments, company standing, and independent coverage — see methodology for the full breakdown.
How does the reach of KR 120 R3900-2 K compare to Welding Robot RH06A3-1700?
KR 120 R3900-2 K has a reach of 3904 mm. Welding Robot RH06A3-1700 has a reach of 1490 mm.
Are KR 120 R3900-2 K and Welding Robot RH06A3-1700 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 KR 120 R3900-2 K and Welding Robot RH06A3-1700?
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
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About this comparison
KR 120 R3900-2 K vs Welding Robot RH06A3-1700 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 Robo Index is calculated.