KR 120 R3900-2 K vs KR 20 R1810 HO
Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and KR 20 R1810 HO (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 R3900-2 KGermany
- KR 20 R1810 HOGermany
Year First Available
- KR 120 R3900-2 K2015
- KR 20 R1810 HO—
Verified Deployments
- KR 120 R3900-2 K0 Deployments
- KR 20 R1810 HO0 Deployments
Layer 2: Operational
Price
- KR 120 R3900-2 K$19,000–$84,900 USD
- KR 20 R1810 HO$20,000–$32,900 USD
Availability Status
- KR 120 R3900-2 KACTIVE
- KR 20 R1810 HOACTIVE
Arm Mechanics
Robot Weight
- KR 120 R3900-2 K42 kg
- KR 20 R1810 HO250 kg
Payload
- KR 120 R3900-2 K146 kg
- KR 20 R1810 HO20 kg
Reach
- KR 120 R3900-2 K3,904 mm
- KR 20 R1810 HO1,813 mm
Degrees of Freedom
- KR 120 R3900-2 K6
- KR 20 R1810 HO6
Repeatability
- KR 120 R3900-2 K±0.04 mm
- KR 20 R1810 HO±0.04 mm
IP Rating (Arm)
- KR 120 R3900-2 KIP65
- KR 20 R1810 HOIP65
IP Rating (Wrist)
- KR 120 R3900-2 KIP67
- KR 20 R1810 HOIP65
Performance
Duty Cycle
- KR 120 R3900-2 K—
- KR 20 R1810 HOcontinuous 24 7
Safety
Dual Check Safety
- KR 120 R3900-2 K—
- KR 20 R1810 HOYes
Controller & Programming
Controller Model
- KR 120 R3900-2 KKR C5, KR C5 micro
- KR 20 R1810 HOKR C5; KR C4
Programming Languages
- KR 120 R3900-2 K—
- KR 20 R1810 HOKRL
Teach Pendant Type
- KR 120 R3900-2 K—
- KR 20 R1810 HOsmart pad
Offline Programming
- KR 120 R3900-2 K—
- KR 20 R1810 HOKUKA.Sim
Connectivity
IoT / Cloud Platform
- KR 120 R3900-2 K—
- KR 20 R1810 HOKUKA Connect
End-Effector
Tool Flange Standard
- KR 120 R3900-2 K—
- KR 20 R1810 HOISO 9409-1
Internal Cable Routing
- KR 120 R3900-2 K—
- KR 20 R1810 HOthrough arm and wrist
Commercial
Price (USD)
- KR 120 R3900-2 K$19,000–$84,900 USD
- KR 20 R1810 HO$20,000–$32,900 USD
Warranty
- KR 120 R3900-2 K2 yrs
- KR 20 R1810 HO—
Service Network
- KR 120 R3900-2 Kglobal
- KR 20 R1810 HOglobal
| | |
|---|---|---|
| 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) | $19,000–$84,900 USD | $20,000–$32,900 USD |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Robot Weight (priority for Home & Household buyers) (values differ) | 42 kg | 250 kg |
| Payload (values differ) | 146 kg | 20 kg |
| Reach (values differ) | 3,904 mm | 1,813 mm |
| Degrees of Freedom | 6 | 6 |
| Repeatability | ±0.04 mm | ±0.04 mm |
| IP Rating (Arm) | IP65 | IP65 |
| IP Rating (Wrist) (values differ) | IP67 | IP65 |
| 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 | KR C5; KR C4 |
| Programming Languages (values differ) | — | KRL |
| Teach Pendant Type (values differ) | — | smart pad |
| Offline Programming (values differ) | — | KUKA.Sim |
| Connectivity | ||
| 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) | $19,000–$84,900 USD | $20,000–$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, 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
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 HO |
|---|---|---|
| Investment | $51,950 | $26,450 |
| Payback period | 12.5 mo | 6.3 mo |
| Net savings (5 yr) | $198,050 | $223,550 |
| ROI (5 yr) | +381% | +845% |
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 HO?
KR 120 R3900-2 K is made by KUKA Robotics, based in DE. KR 20 R1810 HO is made by KUKA Robotics, based in DE.
How do KR 120 R3900-2 K and KR 20 R1810 HO compare on the Robo Index?
KR 120 R3900-2 K grades AAA on the Robo Index. KR 20 R1810 HO 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 HO?
KR 120 R3900-2 K has a reach of 3904 mm. KR 20 R1810 HO has a reach of 1810 mm.
Are KR 120 R3900-2 K and KR 20 R1810 HO 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 HO?
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 HO 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.