KR 120 R3900-2 K vs Stäubli Robot
Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and Stäubli Robot (Stäubli International AG — Robotics Division) — 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
- Stäubli RobotSwitzerland
Year First Available
- KR 120 R3900-2 K2015
- Stäubli Robot—
Verified Deployments
- KR 120 R3900-2 K0 Deployments
- Stäubli Robot0 Deployments
Layer 2: Operational
Price
- KR 120 R3900-2 K$19,000–$84,900 USD
- Stäubli RobotContact for quote
Availability Status
- KR 120 R3900-2 KACTIVE
- Stäubli RobotACTIVE
Arm Mechanics
Robot Weight
- KR 120 R3900-2 K42 kg
- Stäubli Robot—
Payload
- KR 120 R3900-2 K146 kg
- Stäubli Robot—
Reach
- KR 120 R3900-2 K3,904 mm
- Stäubli Robot—
Degrees of Freedom
- KR 120 R3900-2 K6
- Stäubli Robot6
Repeatability
- KR 120 R3900-2 K±0.04 mm
- Stäubli Robot±0.05 mm
IP Rating (Arm)
- KR 120 R3900-2 KIP65
- Stäubli Robot—
IP Rating (Wrist)
- KR 120 R3900-2 KIP67
- Stäubli Robot—
Performance
Duty Cycle
- KR 120 R3900-2 K—
- Stäubli Robotcontinuous 24 7
Controller & Programming
Controller Model
- KR 120 R3900-2 KKR C5, KR C5 micro
- Stäubli RobotCS9
Programming Languages
- KR 120 R3900-2 K—
- Stäubli RobotVALBlocks
Teach Pendant Type
- KR 120 R3900-2 K—
- Stäubli Robotwired touch
Offline Programming
- KR 120 R3900-2 K—
- Stäubli RobotStäubli Robotics Suite
Digital Twin Support
- KR 120 R3900-2 K—
- Stäubli RobotYes
End-Effector
Internal Cable Routing
- KR 120 R3900-2 K—
- Stäubli Robotthrough arm and wrist
Commercial
Price (USD)
- KR 120 R3900-2 K$19,000–$84,900 USD
- Stäubli RobotContact for quote
Warranty
- KR 120 R3900-2 K2 yrs
- Stäubli Robot—
Service Network
- KR 120 R3900-2 Kglobal
- Stäubli Robotglobal
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Germany | Switzerland |
| Year First Available (values differ) | 2015 | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | $19,000–$84,900 USD | Contact for quote |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Robot Weight (priority for Cleaning & Facilities buyers) (values differ) | 42 kg | — |
| Payload (priority for Cleaning & Facilities buyers) (values differ) | 146 kg | — |
| Reach (values differ) | 3,904 mm | — |
| Degrees of Freedom | 6 | 6 |
| Repeatability (values differ) | ±0.04 mm | ±0.05 mm |
| IP Rating (Arm) (values differ) | IP65 | — |
| 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 | CS9 |
| Programming Languages (values differ) | — | VALBlocks |
| Teach Pendant Type (values differ) | — | wired touch |
| Offline Programming (values differ) | — | Stäubli Robotics Suite |
| Digital Twin Support (values differ) | — | Yes |
| End-Effector | ||
| Internal Cable Routing (values differ) | — | through arm and wrist |
| 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, Vibration Damping, Safety Category, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, 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
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 | Stäubli Robot |
|---|---|---|
| Investment | $51,950 | No price |
| Payback period | 12.5 mo | — |
| Net savings (5 yr) | $198,050 | — |
| ROI (5 yr) | +381% | — |
Stäubli Robot has no listed price, so payback can't be computed. Contact the manufacturer for a quote.
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 Stäubli Robot?
KR 120 R3900-2 K is made by KUKA Robotics, based in DE. Stäubli Robot is made by Stäubli International AG — Robotics Division, based in CH.
How do KR 120 R3900-2 K and Stäubli Robot compare on the Robo Index?
KR 120 R3900-2 K grades AAA on the Robo Index. Stäubli Robot 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.
Are KR 120 R3900-2 K and Stäubli Robot 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 Stäubli Robot?
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.
Other comparisons
About this comparison
KR 120 R3900-2 K vs Stäubli Robot 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.