KR 120 R3500-2 P vs KR 120 R3900-2 K
Side-by-side comparison of KR 120 R3500-2 P (KUKA Robotics) and KR 120 R3900-2 K (KUKA Robotics) — specs, pricing, Robo Index, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Home & Household buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- KR 120 R3500-2 PGermany
- KR 120 R3900-2 KGermany
Year First Available
- KR 120 R3500-2 P—
- KR 120 R3900-2 K2015
Verified Deployments
- KR 120 R3500-2 P0 Deployments
- KR 120 R3900-2 K0 Deployments
Layer 2: Operational
Price
- KR 120 R3500-2 PContact for quote
- KR 120 R3900-2 K$19,000–$84,900 USD
Availability Status
- KR 120 R3500-2 PACTIVE
- KR 120 R3900-2 KACTIVE
Arm Mechanics
Robot Weight
- KR 120 R3500-2 P1,283 kg
- KR 120 R3900-2 K42 kg
Payload
- KR 120 R3500-2 P120 kg
- KR 120 R3900-2 K146 kg
Reach
- KR 120 R3500-2 P3,505 mm
- KR 120 R3900-2 K3,904 mm
Degrees of Freedom
- KR 120 R3500-2 P6
- KR 120 R3900-2 K6
Repeatability
- KR 120 R3500-2 P±0.05 mm
- KR 120 R3900-2 K±0.04 mm
IP Rating (Arm)
- KR 120 R3500-2 PIP65
- KR 120 R3900-2 KIP65
IP Rating (Wrist)
- KR 120 R3500-2 PIP65/IP67
- KR 120 R3900-2 KIP67
Performance
MTBF
- KR 120 R3500-2 P70,000 hrs
- KR 120 R3900-2 K—
Duty Cycle
- KR 120 R3500-2 Pcontinuous 24 7
- KR 120 R3900-2 K—
Controller & Programming
Controller Model
- KR 120 R3500-2 PKR C5; KR C4
- KR 120 R3900-2 KKR C5, KR C5 micro
Programming Languages
- KR 120 R3500-2 PKRL
- KR 120 R3900-2 K—
Teach Pendant Type
- KR 120 R3500-2 Psmart pad
- KR 120 R3900-2 K—
Offline Programming
- KR 120 R3500-2 PKUKA.Sim
- KR 120 R3900-2 K—
Connectivity
ROS-Industrial Support
- KR 120 R3500-2 Pcommunity
- KR 120 R3900-2 K—
IoT / Cloud Platform
- KR 120 R3500-2 PKUKA Connect
- KR 120 R3900-2 K—
End-Effector
Tool Flange Standard
- KR 120 R3500-2 PISO 9409-1
- KR 120 R3900-2 K—
Internal Cable Routing
- KR 120 R3500-2 Pthrough arm and wrist
- KR 120 R3900-2 K—
Commercial
Price (USD)
- KR 120 R3500-2 PContact for quote
- KR 120 R3900-2 K$19,000–$84,900 USD
Warranty
- KR 120 R3500-2 P1 yrs
- KR 120 R3900-2 K2 yrs
Service Network
- KR 120 R3500-2 Pglobal
- KR 120 R3900-2 Kglobal
Expected Service Life
- KR 120 R3500-2 P15 yrs
- KR 120 R3900-2 K—
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country | Germany | Germany |
| Year First Available (values differ) | — | 2015 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | Contact for quote | $19,000–$84,900 USD |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Robot Weight (priority for Home & Household buyers) (values differ) | 1,283 kg | 42 kg |
| Payload (values differ) | 120 kg | 146 kg |
| Reach (values differ) | 3,505 mm | 3,904 mm |
| Degrees of Freedom | 6 | 6 |
| Repeatability (values differ) | ±0.05 mm | ±0.04 mm |
| IP Rating (Arm) | IP65 | IP65 |
| IP Rating (Wrist) (values differ) | IP65/IP67 | IP67 |
| Performance | ||
| MTBF (values differ) | 70,000 hrs | — |
| Duty Cycle (values differ) | continuous 24 7 | — |
| Controller & Programming | ||
| Controller Model (values differ) | KR C5; KR C4 | KR C5, KR C5 micro |
| Programming Languages (values differ) | KRL | — |
| Teach Pendant Type (values differ) | smart pad | — |
| Offline Programming (values differ) | KUKA.Sim | — |
| Connectivity | ||
| ROS-Industrial Support (values differ) | community | — |
| IoT / Cloud Platform (values differ) | KUKA Connect | — |
| End-Effector | ||
| Tool Flange Standard (values differ) | ISO 9409-1 | — |
| 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) | 1 yrs | 2 yrs |
| Service Network | global | global |
| Expected Service Life (values differ) | 15 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, Cycle Time (25/305/25), Vibration Damping, Safety Category, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Digital Twin Support, Communication Protocols, Cybersecurity Certs, Predictive Maintenance, Tool Changer (ISO), Pneumatic Lines, Electrical Lines, Spare Parts Lead Time
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 R3500-2 P | KR 120 R3900-2 K |
|---|---|---|
| Investment | No price | $51,950 |
| Payback period | — | 12.5 mo |
| Net savings (5 yr) | — | $198,050 |
| ROI (5 yr) | — | +381% |
KR 120 R3500-2 P 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 R3500-2 P and KR 120 R3900-2 K?
KR 120 R3500-2 P is made by KUKA Robotics, based in DE. KR 120 R3900-2 K is made by KUKA Robotics, based in DE.
How do KR 120 R3500-2 P and KR 120 R3900-2 K compare on the Robo Index?
KR 120 R3500-2 P grades A on the Robo Index. KR 120 R3900-2 K grades AAA. 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 R3500-2 P compare to KR 120 R3900-2 K?
KR 120 R3500-2 P has a reach of 3100 mm. KR 120 R3900-2 K has a reach of 3904 mm.
Are KR 120 R3500-2 P 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 KR 120 R3500-2 P 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
KR 120 R3500-2 P 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.