Flapper Nimble+ Starter Kit vs KR 120 R3900-2 K
Side-by-side comparison of Flapper Nimble+ Starter Kit (Flapper Drones) and KR 120 R3900-2 K (KUKA Robotics) — specs, pricing, Robo Score, and verified deployments. Updated daily.
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Layer 1: Identity & Trust
Manufacturer Country
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 KGermany
Year First Available
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 K2015
Layer 2: Operational
Price
- Flapper Nimble+ Starter Kit$2,200 USD
- KR 120 R3900-2 K$19,000–$84,900 USD
Battery / Shift Runtime
- Flapper Nimble+ Starter Kit0.1 hrs
- KR 120 R3900-2 K—
Availability Status
- Flapper Nimble+ Starter KitACTIVE
- KR 120 R3900-2 KACTIVE
Arm Mechanics
Payload
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 K146 kg
Reach
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 K3,904 mm
Degrees of Freedom
- Flapper Nimble+ Starter Kit6
- KR 120 R3900-2 K6
Repeatability
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 K±0.04 mm
Robot Weight
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 K42 kg
IP Rating (Arm)
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 KIP65
IP Rating (Wrist)
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 KIP67
Controller & Programming
Controller Model
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 KKR C5, KR C5 micro
Commercial
Price (USD)
- Flapper Nimble+ Starter Kit$2,200 USD
- KR 120 R3900-2 K$19,000–$84,900 USD
Warranty
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 K2 yrs
Service Network
- Flapper Nimble+ Starter Kit—
- KR 120 R3900-2 Kglobal
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | — | Germany |
| Year First Available (values differ) | — | 2015 |
| Layer 2: Operational | ||
| Price (values differ) | $2,200 USD | $19,000–$84,900 USD |
| Battery / Shift Runtime (values differ) | 0.1 hrs | — |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Payload (values differ) | — | 146 kg |
| Reach (values differ) | — | 3,904 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 |
| Controller & Programming | ||
| Controller Model (values differ) | — | KR C5, KR C5 micro |
| Commercial | ||
| Price (USD) (values differ) | $2,200 USD | $19,000–$84,900 USD |
| Warranty (values differ) | — | 2 yrs |
| Service Network (values differ) | — | global |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Verified Deployments, Path Accuracy, Max TCP Speed, Cycle Time (25/305/25), MTBF, Duty Cycle, Vibration Damping, Safety Category, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Programming Languages, Teach Pendant Type, Offline Programming, Digital Twin Support, Communication Protocols, ROS-Industrial Support, IoT / Cloud Platform, Cybersecurity Certs, Predictive Maintenance, Tool Flange Standard, Tool Changer (ISO), Internal Cable Routing, 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 | Flapper Nimble+ Starter Kit | KR 120 R3900-2 K |
|---|---|---|
| Investment | $2,200 | $51,950 |
| Payback period | < 1 mo | 12.5 mo |
| Net savings (5 yr) | $247,800 | $198,050 |
| ROI (5 yr) | +11264% | +381% |
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 Flapper Nimble+ Starter Kit and KR 120 R3900-2 K?
Flapper Nimble+ Starter Kit is made by Flapper Drones. KR 120 R3900-2 K is made by KUKA Robotics, based in DE.
Are Flapper Nimble+ Starter Kit 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 Flapper Nimble+ Starter Kit 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
Flapper Nimble+ Starter Kit 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 Score is calculated.