KR 120 R3900-2 K vs Motoman GP-Series
Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and Motoman GP-Series (Motoman) — specs, pricing, Robo Index, and verified deployments. Updated daily.
Prices in
View savedOptimize comparison for buyer
Layer 1: Identity & Trust
Manufacturer Country
- KR 120 R3900-2 KGermany
- Motoman GP-SeriesJapan
Year First Available
- KR 120 R3900-2 K2015
- Motoman GP-Series—
Verified Deployments
- KR 120 R3900-2 K0 Deployments
- Motoman GP-Series0 Deployments
Layer 2: Operational
Price
- KR 120 R3900-2 K$19,000–$84,900 USD
- Motoman GP-SeriesContact for quote
Availability Status
- KR 120 R3900-2 KACTIVE
- Motoman GP-SeriesACTIVE
Arm Mechanics
Payload
- KR 120 R3900-2 K146 kg
- Motoman GP-Series7 kg
Reach
- KR 120 R3900-2 K3,904 mm
- Motoman GP-Series927 mm
Degrees of Freedom
- KR 120 R3900-2 K6
- Motoman GP-Series6
Repeatability
- KR 120 R3900-2 K±0.04 mm
- Motoman GP-Series—
Robot Weight
- KR 120 R3900-2 K42 kg
- Motoman GP-Series—
IP Rating (Arm)
- KR 120 R3900-2 KIP65
- Motoman GP-Series—
IP Rating (Wrist)
- KR 120 R3900-2 KIP67
- Motoman GP-Series—
Performance
Duty Cycle
- KR 120 R3900-2 K—
- Motoman GP-Seriescontinuous 24 7
Safety
Dual Check Safety
- KR 120 R3900-2 K—
- Motoman GP-SeriesYes
Controller & Programming
Controller Model
- KR 120 R3900-2 KKR C5, KR C5 micro
- Motoman GP-SeriesYRC1000
Programming Languages
- KR 120 R3900-2 K—
- Motoman GP-SeriesINFORM
Teach Pendant Type
- KR 120 R3900-2 K—
- Motoman GP-Seriessmart pad
Offline Programming
- KR 120 R3900-2 K—
- Motoman GP-SeriesMotoSim
Connectivity
IoT / Cloud Platform
- KR 120 R3900-2 K—
- Motoman GP-SeriesYaskawa Cockpit
End-Effector
Tool Flange Standard
- KR 120 R3900-2 K—
- Motoman GP-SeriesISO 9409-1
Internal Cable Routing
- KR 120 R3900-2 K—
- Motoman GP-Seriesthrough arm and wrist
Commercial
Price (USD)
- KR 120 R3900-2 K$19,000–$84,900 USD
- Motoman GP-SeriesContact for quote
Warranty
- KR 120 R3900-2 K2 yrs
- Motoman GP-Series1 yrs
Service Network
- KR 120 R3900-2 Kglobal
- Motoman GP-Seriesglobal
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Germany | Japan |
| 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 | ||
| Payload (values differ) | 146 kg | 7 kg |
| Reach (values differ) | 3,904 mm | 927 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 |
| Safety | ||
| Dual Check Safety (values differ) | — | Yes |
| Controller & Programming | ||
| Controller Model (values differ) | KR C5, KR C5 micro | YRC1000 |
| Programming Languages (values differ) | — | INFORM |
| Teach Pendant Type (values differ) | — | smart pad |
| Offline Programming (values differ) | — | MotoSim |
| Connectivity | ||
| IoT / Cloud Platform (values differ) | — | Yaskawa Cockpit |
| End-Effector | ||
| Tool Flange Standard (values differ) | — | ISO 9409-1 |
| 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 | 1 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, 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), Pneumatic Lines, Electrical Lines, Spare Parts Lead Time, Expected Service Life
best in categoryweakest in categoryvalues differ
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 | Motoman GP-Series |
|---|---|---|
| Investment | $51,950 | No price |
| Payback period | 12.5 mo | — |
| Net savings (5 yr) | $198,050 | — |
| ROI (5 yr) | +381% | — |
Motoman GP-Series 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 Motoman GP-Series?
KR 120 R3900-2 K is made by KUKA Robotics, based in DE. Motoman GP-Series is made by Motoman, based in JP.
How do KR 120 R3900-2 K and Motoman GP-Series compare on the Robo Index?
KR 120 R3900-2 K grades AAA on the Robo Index. Motoman GP-Series 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 Motoman GP-Series?
KR 120 R3900-2 K has a reach of 3904 mm. Motoman GP-Series has a reach of 927 mm.
Are KR 120 R3900-2 K and Motoman GP-Series 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 Motoman GP-Series?
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.
About this comparison
KR 120 R3900-2 K vs Motoman GP-Series 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.