Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and LineLIGHT Fusion Segment (WERMA) — specs, pricing, Robo Index, 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

Year First Available

Verified Deployments

Price Range (USD)

Availability Status

Payload

IP Rating (Arm)

Reach

Degrees of Freedom

Repeatability

Robot Weight

IP Rating (Wrist)

Controller Model

ROS-Industrial Support

Price (USD)

Warranty

Service Network

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|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country | Germany | Germany |
| Year First Available (values differ) | 2015 | 2025 |
| 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 | ||
| Payload (priority for Last-Mile Delivery buyers) (values differ) | 146 kg | — |
| IP Rating (Arm) (priority for Last-Mile Delivery buyers) (values differ) | IP65 | IP54 |
| Reach (values differ) | 3,904 mm | — |
| Degrees of Freedom (values differ) | 6 | — |
| Repeatability (values differ) | ±0.04 mm | — |
| Robot Weight (values differ) | 42 kg | 0.1 kg |
| IP Rating (Wrist) (values differ) | IP67 | — |
| Controller & Programming | ||
| Controller Model (values differ) | KR C5, KR C5 micro | — |
| Connectivity | ||
| ROS-Industrial Support (values differ) | — | none |
| Commercial | ||
| Price (USD) (values differ) | $19,000–$84,900 USD | Contact for quote |
| Warranty (values differ) | 2 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, Duty Cycle, Vibration Damping, Safety Category, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Programming Languages, Teach Pendant Type, Offline Programming, Digital Twin Support, Communication Protocols, IoT / Cloud Platform, Cybersecurity Certs, Predictive Maintenance, Tool Flange Standard, Tool Changer (ISO), Internal Cable Routing, Pneumatic Lines, Electrical Lines, Spare Parts Lead Time, Expected Service Life
Frequently asked
KR 120 R3900-2 K is made by KUKA Robotics, based in DE. LineLIGHT Fusion Segment is made by WERMA, based in DE.
KR 120 R3900-2 K launched in 2015. LineLIGHT Fusion Segment launched in 2025.
KR 120 R3900-2 K grades AA on the Robo Index. LineLIGHT Fusion Segment grades BB. 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.
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 LineLIGHT Fusion Segment 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.