Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and KR AGILUS sixx (KUKA Robotics) — specs, pricing, Robo Index, 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


Year First Available


Verified Deployments


Price Range (USD)


Availability Status


Repeatability


IP Rating (Arm)


Reach


Payload


Degrees of Freedom


Robot Weight


IP Rating (Wrist)


Duty Cycle


Controller Model


Programming Languages


Teach Pendant Type


Offline Programming


IoT / Cloud Platform


Tool Flange Standard


Internal Cable Routing


Pneumatic Lines


Price (USD)


Warranty


Service Network


![]() | ![]() | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country | Germany | Germany |
| Year First Available (values differ) | 2015 | 2020 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $19,000–$84,900 USD | Contact for quote |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Repeatability (priority for Healthcare & Hospitals buyers) (values differ) | ±0.04 mm | ±0.03 mm |
| IP Rating (Arm) (priority for Healthcare & Hospitals buyers) (values differ) | IP65 | — |
| Reach (priority for Healthcare & Hospitals buyers) (values differ) | 3,904 mm | 1,100 mm |
| Payload (values differ) | 146 kg | 10 kg |
| Degrees of Freedom | 6 | 6 |
| Robot Weight (values differ) | 42 kg | — |
| 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 | KUKA Controller |
| Programming Languages (values differ) | — | KRL |
| Teach Pendant Type (values differ) | — | wired touch |
| Offline Programming (values differ) | — | KUKA.Sim |
| Connectivity | ||
| IoT / Cloud Platform (values differ) | — | KUKA Connect |
| End-Effector | ||
| Tool Flange Standard (values differ) | — | ISO 9409-1 |
| Internal Cable Routing (values differ) | — | through arm |
| Pneumatic Lines (values differ) | — | 2 |
| Commercial | ||
| Price (USD) (values differ) | $19,000–$84,900 USD | Contact for quote |
| Warranty (values differ) | 2 yrs | 3 yrs |
| Service Network | global | global |
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, ROS-Industrial Support, Cybersecurity Certs, Predictive Maintenance, Tool Changer (ISO), Electrical Lines, Spare Parts Lead Time, Expected Service Life
Frequently asked
KR 120 R3900-2 K is made by KUKA Robotics, based in DE. KR AGILUS sixx is made by KUKA Robotics, based in DE.
KR 120 R3900-2 K launched in 2015. KR AGILUS sixx launched in 2020.
KR 120 R3900-2 K scores 78/100. KR AGILUS sixx scores 68/100. The Robo Index blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
KR 120 R3900-2 K has a reach of 3904 mm. KR AGILUS sixx has a reach of 1100 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
Want to be notified when specs or pricing change for these robots? Drop your email.
KR 120 R3900-2 K vs KR AGILUS sixx 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.