6-Axis Cartesian CRS vs KR 120 R3900-2 K
Side-by-side comparison of 6-Axis Cartesian CRS (IAI) and KR 120 R3900-2 K (KUKA Robotics) — specs, pricing, Robo Index, and verified deployments. Updated daily.
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Layer 1: Identity & Trust
Manufacturer Country
- 6-Axis Cartesian CRSJapan
- KR 120 R3900-2 KGermany
Year First Available
- 6-Axis Cartesian CRS2020
- KR 120 R3900-2 K2015
Verified Deployments
- 6-Axis Cartesian CRS0 Deployments
- KR 120 R3900-2 K0 Deployments
Layer 2: Operational
Price Range (USD)
- 6-Axis Cartesian CRSContact for quote
- KR 120 R3900-2 K$19,000–$84,900 USD
Availability Status
- 6-Axis Cartesian CRSACTIVE
- KR 120 R3900-2 KACTIVE
Arm Mechanics
Payload
- 6-Axis Cartesian CRS78.6 kg
- KR 120 R3900-2 K146 kg
Reach
- 6-Axis Cartesian CRS—
- KR 120 R3900-2 K3,904 mm
Degrees of Freedom
- 6-Axis Cartesian CRS6
- KR 120 R3900-2 K6
Repeatability
- 6-Axis Cartesian CRS—
- KR 120 R3900-2 K±0.04 mm
Robot Weight
- 6-Axis Cartesian CRS—
- KR 120 R3900-2 K42 kg
IP Rating (Arm)
- 6-Axis Cartesian CRS—
- KR 120 R3900-2 KIP65
IP Rating (Wrist)
- 6-Axis Cartesian CRS—
- KR 120 R3900-2 KIP67
Performance
Duty Cycle
- 6-Axis Cartesian CRScontinuous 24 7
- KR 120 R3900-2 K—
Vibration Damping
- 6-Axis Cartesian CRSactive model based
- KR 120 R3900-2 K—
Controller & Programming
Controller Model
- 6-Axis Cartesian CRSXSEL
- KR 120 R3900-2 KKR C5, KR C5 micro
Teach Pendant Type
- 6-Axis Cartesian CRSwired touch
- KR 120 R3900-2 K—
Offline Programming
- 6-Axis Cartesian CRSIAI software
- KR 120 R3900-2 K—
End-Effector
Tool Changer (ISO)
- 6-Axis Cartesian CRSnone
- KR 120 R3900-2 K—
Internal Cable Routing
- 6-Axis Cartesian CRSthrough arm and wrist
- KR 120 R3900-2 K—
Commercial
Price (USD)
- 6-Axis Cartesian CRSContact for quote
- KR 120 R3900-2 K$19,000–$84,900 USD
Warranty
- 6-Axis Cartesian CRS—
- KR 120 R3900-2 K2 yrs
Service Network
- 6-Axis Cartesian CRSglobal
- KR 120 R3900-2 Kglobal
| ||
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Japan | Germany |
| Year First Available (values differ) | 2020 | 2015 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | Contact for quote | $19,000–$84,900 USD |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Payload (values differ) | 78.6 kg | 146 kg |
| Reach (values differ) | — | 3,904 mm |
| Degrees of Freedom | 6 | 6 |
| Repeatability (values differ) | — | ±0.04 mm |
| Robot Weight (values differ) | — | 42 kg |
| IP Rating (Arm) (values differ) | — | IP65 |
| IP Rating (Wrist) (values differ) | — | IP67 |
| Performance | ||
| Duty Cycle (values differ) | continuous 24 7 | — |
| Vibration Damping (values differ) | active model based | — |
| Controller & Programming | ||
| Controller Model (values differ) | XSEL | KR C5, KR C5 micro |
| Teach Pendant Type (values differ) | wired touch | — |
| Offline Programming (values differ) | IAI software | — |
| End-Effector | ||
| Tool Changer (ISO) (values differ) | none | — |
| Internal Cable Routing (values differ) | through arm and wrist | — |
| Commercial | ||
| Price (USD) (values differ) | Contact for quote | $19,000–$84,900 USD |
| 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, Safety Category, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Programming Languages, Digital Twin Support, Communication Protocols, ROS-Industrial Support, IoT / Cloud Platform, Cybersecurity Certs, Predictive Maintenance, Tool Flange Standard, Pneumatic Lines, Electrical Lines, Spare Parts Lead Time, Expected Service Life
best in categoryweakest in categoryvalues differ
Trade-offs at a glance
Frequently asked
Who makes 6-Axis Cartesian CRS and KR 120 R3900-2 K?
6-Axis Cartesian CRS is made by IAI, based in JP. KR 120 R3900-2 K is made by KUKA Robotics, based in DE.
When were 6-Axis Cartesian CRS and KR 120 R3900-2 K launched?
6-Axis Cartesian CRS launched in 2020. KR 120 R3900-2 K launched in 2015.
How do 6-Axis Cartesian CRS and KR 120 R3900-2 K compare on the Robo Index?
6-Axis Cartesian CRS scores 65/100. KR 120 R3900-2 K scores 78/100. The Robo Index blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
Are 6-Axis Cartesian CRS and KR 120 R3900-2 K 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 6-Axis Cartesian CRS and KR 120 R3900-2 K?
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
6-Axis Cartesian CRS vs KR 120 R3900-2 K 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.