KR 120 R3900-2 K vs KR 20 R1810 CR
Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and KR 20 R1810 CR (KUKA Robotics) — specs, pricing, Robo Index, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Last-Mile Delivery buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- KR 120 R3900-2 KGermany
- KR 20 R1810 CRGermany
Year First Available
- KR 120 R3900-2 K2015
- KR 20 R1810 CR2024
Verified Deployments
- KR 120 R3900-2 K0 Deployments
- KR 20 R1810 CR0 Deployments
Layer 2: Operational
Price
- KR 120 R3900-2 K$19,000–$84,900 USD
- KR 20 R1810 CR$32,900 USD
Availability Status
- KR 120 R3900-2 KACTIVE
- KR 20 R1810 CRACTIVE
Arm Mechanics
Payload
- KR 120 R3900-2 K146 kg
- KR 20 R1810 CR20 kg
IP Rating (Arm)
- KR 120 R3900-2 KIP65
- KR 20 R1810 CRIP65
Reach
- KR 120 R3900-2 K3,904 mm
- KR 20 R1810 CR1,813 mm
Degrees of Freedom
- KR 120 R3900-2 K6
- KR 20 R1810 CR6
Repeatability
- KR 120 R3900-2 K±0.04 mm
- KR 20 R1810 CR±0.04 mm
Robot Weight
- KR 120 R3900-2 K42 kg
- KR 20 R1810 CR250 kg
IP Rating (Wrist)
- KR 120 R3900-2 KIP67
- KR 20 R1810 CRIP65
Performance
Duty Cycle
- KR 120 R3900-2 K—
- KR 20 R1810 CRnot specified
Controller & Programming
Controller Model
- KR 120 R3900-2 KKR C5, KR C5 micro
- KR 20 R1810 CRKR C4
Programming Languages
- KR 120 R3900-2 K—
- KR 20 R1810 CRKRL
Teach Pendant Type
- KR 120 R3900-2 K—
- KR 20 R1810 CRsmart pad
Offline Programming
- KR 120 R3900-2 K—
- KR 20 R1810 CRKUKA.WorkVisual
Connectivity
ROS-Industrial Support
- KR 120 R3900-2 K—
- KR 20 R1810 CRvendor supported
IoT / Cloud Platform
- KR 120 R3900-2 K—
- KR 20 R1810 CRMQTT
Predictive Maintenance
- KR 120 R3900-2 K—
- KR 20 R1810 CRml based
End-Effector
Tool Flange Standard
- KR 120 R3900-2 K—
- KR 20 R1810 CRISO 9409-1
Internal Cable Routing
- KR 120 R3900-2 K—
- KR 20 R1810 CRthrough arm and wrist
Commercial
Price (USD)
- KR 120 R3900-2 K$19,000–$84,900 USD
- KR 20 R1810 CR$32,900 USD
Warranty
- KR 120 R3900-2 K2 yrs
- KR 20 R1810 CR—
Service Network
- KR 120 R3900-2 Kglobal
- KR 20 R1810 CRglobal
| ||
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country | Germany | Germany |
| Year First Available (values differ) | 2015 | 2024 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | $19,000–$84,900 USD | $32,900 USD |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Payload (priority for Last-Mile Delivery buyers) (values differ) | 146 kg | 20 kg |
| IP Rating (Arm) (priority for Last-Mile Delivery buyers) | IP65 | IP65 |
| Reach (values differ) | 3,904 mm | 1,813 mm |
| Degrees of Freedom | 6 | 6 |
| Repeatability | ±0.04 mm | ±0.04 mm |
| Robot Weight (values differ) | 42 kg | 250 kg |
| IP Rating (Wrist) (values differ) | IP67 | IP65 |
| Performance | ||
| Duty Cycle (values differ) | — | not specified |
| Controller & Programming | ||
| Controller Model (values differ) | KR C5, KR C5 micro | KR C4 |
| Programming Languages (values differ) | — | KRL |
| Teach Pendant Type (values differ) | — | smart pad |
| Offline Programming (values differ) | — | KUKA.WorkVisual |
| Connectivity | ||
| ROS-Industrial Support (values differ) | — | vendor supported |
| IoT / Cloud Platform (values differ) | — | MQTT |
| Predictive Maintenance (values differ) | — | ml based |
| 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 | $32,900 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, Vibration Damping, Safety Category, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Digital Twin Support, Communication Protocols, Cybersecurity Certs, 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 | KR 20 R1810 CR |
|---|---|---|
| Investment | $51,950 | $32,900 |
| Payback period | 12.5 mo | 7.9 mo |
| Net savings (5 yr) | $198,050 | $217,100 |
| ROI (5 yr) | +381% | +660% |
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 KR 20 R1810 CR?
KR 120 R3900-2 K is made by KUKA Robotics, based in DE. KR 20 R1810 CR is made by KUKA Robotics, based in DE.
When were KR 120 R3900-2 K and KR 20 R1810 CR launched?
KR 120 R3900-2 K launched in 2015. KR 20 R1810 CR launched in 2024.
How do KR 120 R3900-2 K and KR 20 R1810 CR compare on the Robo Index?
KR 120 R3900-2 K grades AAA on the Robo Index. KR 20 R1810 CR 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 KR 20 R1810 CR?
KR 120 R3900-2 K has a reach of 3904 mm. KR 20 R1810 CR has a reach of 1813 mm.
Are KR 120 R3900-2 K and KR 20 R1810 CR 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 KR 20 R1810 CR?
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 KR 20 R1810 CR 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.