KR 120 R3900-2 K vs YK-TW
Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and YK-TW (Yamaha Robotics) — specs, pricing, Robo Index, and verified deployments. Updated daily.
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Layer 1: Identity & Trust
Manufacturer Country
- KR 120 R3900-2 KGermany
- YK-TWJapan
Year First Available
- KR 120 R3900-2 K2015
- YK-TW2012
Verified Deployments
- KR 120 R3900-2 K0 Deployments
- YK-TW0 Deployments
Layer 2: Operational
Price Range (USD)
- KR 120 R3900-2 K$19,000–$84,900 USD
- YK-TWContact for quote
Availability Status
- KR 120 R3900-2 KACTIVE
- YK-TWACTIVE
Arm Mechanics
Payload
- KR 120 R3900-2 K146 kg
- YK-TW5 kg
Reach
- KR 120 R3900-2 K3,904 mm
- YK-TW500 mm
Degrees of Freedom
- KR 120 R3900-2 K6
- YK-TW4
Repeatability
- KR 120 R3900-2 K±0.04 mm
- YK-TW±0.01 mm
Robot Weight
- KR 120 R3900-2 K42 kg
- YK-TW27 kg
IP Rating (Arm)
- KR 120 R3900-2 KIP65
- YK-TWIP20
IP Rating (Wrist)
- KR 120 R3900-2 KIP67
- YK-TW—
Performance
Cycle Time (25/305/25)
- KR 120 R3900-2 K—
- YK-TW0.3 s
Duty Cycle
- KR 120 R3900-2 K—
- YK-TWcontinuous 24 7
Vibration Damping
- KR 120 R3900-2 K—
- YK-TWpassive
Safety
Safety Category
- KR 120 R3900-2 K—
- YK-TWCat.3 PLd
Dual Check Safety
- KR 120 R3900-2 K—
- YK-TWNo
Safety I/O Pairs
- KR 120 R3900-2 K—
- YK-TW8
Safe Zone Count
- KR 120 R3900-2 K—
- YK-TW4
Controller & Programming
Controller Model
- KR 120 R3900-2 KKR C5, KR C5 micro
- YK-TWRCX340
Programming Languages
- KR 120 R3900-2 K—
- YK-TWYamaha PCL (proprietary)
Teach Pendant Type
- KR 120 R3900-2 K—
- YK-TWwired touch
Offline Programming
- KR 120 R3900-2 K—
- YK-TWYamaha RCX340 Studio
Digital Twin Support
- KR 120 R3900-2 K—
- YK-TWNo
Connectivity
ROS-Industrial Support
- KR 120 R3900-2 K—
- YK-TWnone
Predictive Maintenance
- KR 120 R3900-2 K—
- YK-TWthreshold based
End-Effector
Tool Flange Standard
- KR 120 R3900-2 K—
- YK-TWISO 9409-1
Tool Changer (ISO)
- KR 120 R3900-2 K—
- YK-TWnone
Internal Cable Routing
- KR 120 R3900-2 K—
- YK-TWthrough arm
Pneumatic Lines
- KR 120 R3900-2 K—
- YK-TW2
Electrical Lines
- KR 120 R3900-2 K—
- YK-TW8
Commercial
Price (USD)
- KR 120 R3900-2 K$19,000–$84,900 USD
- YK-TWContact for quote
Warranty
- KR 120 R3900-2 K2 yrs
- YK-TW—
Service Network
- KR 120 R3900-2 Kglobal
- YK-TWglobal
Spare Parts Lead Time
- KR 120 R3900-2 K—
- YK-TW5 days
Expected Service Life
- KR 120 R3900-2 K—
- YK-TW10 yrs
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Germany | Japan |
| Year First Available (values differ) | 2015 | 2012 |
| 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 (values differ) | 146 kg | 5 kg |
| Reach (values differ) | 3,904 mm | 500 mm |
| Degrees of Freedom (values differ) | 6 | 4 |
| Repeatability (values differ) | ±0.04 mm | ±0.01 mm |
| Robot Weight (values differ) | 42 kg | 27 kg |
| IP Rating (Arm) (values differ) | IP65 | IP20 |
| IP Rating (Wrist) (values differ) | IP67 | — |
| Performance | ||
| Cycle Time (25/305/25) (values differ) | — | 0.3 s |
| Duty Cycle (values differ) | — | continuous 24 7 |
| Vibration Damping (values differ) | — | passive |
| Safety | ||
| Safety Category (values differ) | — | Cat.3 PLd |
| Dual Check Safety (values differ) | — | No |
| Safety I/O Pairs (values differ) | — | 8 |
| Safe Zone Count (values differ) | — | 4 |
| Controller & Programming | ||
| Controller Model (values differ) | KR C5, KR C5 micro | RCX340 |
| Programming Languages (values differ) | — | Yamaha PCL (proprietary) |
| Teach Pendant Type (values differ) | — | wired touch |
| Offline Programming (values differ) | — | Yamaha RCX340 Studio |
| Digital Twin Support (values differ) | — | No |
| Connectivity | ||
| ROS-Industrial Support (values differ) | — | none |
| Predictive Maintenance (values differ) | — | threshold based |
| End-Effector | ||
| Tool Flange Standard (values differ) | — | ISO 9409-1 |
| Tool Changer (ISO) (values differ) | — | none |
| Internal Cable Routing (values differ) | — | through arm |
| Pneumatic Lines (values differ) | — | 2 |
| Electrical Lines (values differ) | — | 8 |
| Commercial | ||
| Price (USD) (values differ) | $19,000–$84,900 USD | Contact for quote |
| Warranty (values differ) | 2 yrs | — |
| Service Network | global | global |
| Spare Parts Lead Time (values differ) | — | 5 days |
| 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, MTBF, E-Stop Response, Communication Protocols, IoT / Cloud Platform, Cybersecurity Certs
best in categoryweakest in categoryvalues differ
Trade-offs at a glance
Frequently asked
Who makes KR 120 R3900-2 K and YK-TW?
KR 120 R3900-2 K is made by KUKA Robotics, based in DE. YK-TW is made by Yamaha Robotics, based in JP.
When were KR 120 R3900-2 K and YK-TW launched?
KR 120 R3900-2 K launched in 2015. YK-TW launched in 2012.
How do KR 120 R3900-2 K and YK-TW compare on the Robo Index?
KR 120 R3900-2 K grades AA on the Robo Index. YK-TW 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 YK-TW?
KR 120 R3900-2 K has a reach of 3904 mm. YK-TW has a reach of 500 mm.
Are KR 120 R3900-2 K and YK-TW 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 YK-TW?
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 YK-TW 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.