ABB IRB 120 FlexMove vs KR 120 R3900-2 K
Side-by-side comparison of ABB IRB 120 FlexMove (ABB) and KR 120 R3900-2 K (KUKA Robotics) — specs, pricing, Robo Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Hospitality & F&B buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- ABB IRB 120 FlexMoveSwitzerland
- KR 120 R3900-2 KGermany
Year First Available
- ABB IRB 120 FlexMove2018
- KR 120 R3900-2 K2015
Verified Deployments
- ABB IRB 120 FlexMove0 Deployments
- KR 120 R3900-2 K0 Deployments
Layer 2: Operational
Price
- ABB IRB 120 FlexMove$65,000 USD
- KR 120 R3900-2 K$19,000–$84,900 USD
Availability Status
- ABB IRB 120 FlexMoveACTIVE
- KR 120 R3900-2 KACTIVE
Arm Mechanics
Payload
- ABB IRB 120 FlexMove12 kg
- KR 120 R3900-2 K146 kg
Robot Weight
- ABB IRB 120 FlexMove35 kg
- KR 120 R3900-2 K42 kg
Reach
- ABB IRB 120 FlexMove900 mm
- KR 120 R3900-2 K3,904 mm
Degrees of Freedom
- ABB IRB 120 FlexMove6
- KR 120 R3900-2 K6
Repeatability
- ABB IRB 120 FlexMove±0.03 mm
- KR 120 R3900-2 K±0.04 mm
Path Accuracy
- ABB IRB 120 FlexMove±0.1 mm
- KR 120 R3900-2 K—
IP Rating (Arm)
- ABB IRB 120 FlexMoveIP54
- KR 120 R3900-2 KIP65
IP Rating (Wrist)
- ABB IRB 120 FlexMove—
- KR 120 R3900-2 KIP67
Performance
MTBF
- ABB IRB 120 FlexMove50,000 hrs
- KR 120 R3900-2 K—
Duty Cycle
- ABB IRB 120 FlexMove24 7 continuous
- KR 120 R3900-2 K—
Safety
Dual Check Safety
- ABB IRB 120 FlexMoveYes
- KR 120 R3900-2 K—
Safety I/O Pairs
- ABB IRB 120 FlexMove2
- KR 120 R3900-2 K—
Controller & Programming
Controller Model
- ABB IRB 120 FlexMoveOmniCore™
- KR 120 R3900-2 KKR C5, KR C5 micro
Programming Languages
- ABB IRB 120 FlexMoveRAPID
- KR 120 R3900-2 K—
Teach Pendant Type
- ABB IRB 120 FlexMovewired touch
- KR 120 R3900-2 K—
Offline Programming
- ABB IRB 120 FlexMoveRobotStudio
- KR 120 R3900-2 K—
Digital Twin Support
- ABB IRB 120 FlexMoveYes
- KR 120 R3900-2 K—
Connectivity
IoT / Cloud Platform
- ABB IRB 120 FlexMoveABB Ability
- KR 120 R3900-2 K—
Predictive Maintenance
- ABB IRB 120 FlexMovethreshold based
- KR 120 R3900-2 K—
End-Effector
Tool Flange Standard
- ABB IRB 120 FlexMoveiso 9283
- KR 120 R3900-2 K—
Internal Cable Routing
- ABB IRB 120 FlexMovethrough arm and wrist
- KR 120 R3900-2 K—
Pneumatic Lines
- ABB IRB 120 FlexMove1
- KR 120 R3900-2 K—
Commercial
Price (USD)
- ABB IRB 120 FlexMove$65,000 USD
- KR 120 R3900-2 K$19,000–$84,900 USD
Warranty
- ABB IRB 120 FlexMove1 yrs
- KR 120 R3900-2 K2 yrs
Service Network
- ABB IRB 120 FlexMoveglobal
- KR 120 R3900-2 Kglobal
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Switzerland | Germany |
| Year First Available (values differ) | 2018 | 2015 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | $65,000 USD | $19,000–$84,900 USD |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Payload (priority for Hospitality & F&B buyers) (values differ) | 12 kg | 146 kg |
| Robot Weight (priority for Hospitality & F&B buyers) (values differ) | 35 kg | 42 kg |
| Reach (values differ) | 900 mm | 3,904 mm |
| Degrees of Freedom | 6 | 6 |
| Repeatability (values differ) | ±0.03 mm | ±0.04 mm |
| Path Accuracy (values differ) | ±0.1 mm | — |
| IP Rating (Arm) (values differ) | IP54 | IP65 |
| IP Rating (Wrist) (values differ) | — | IP67 |
| Performance | ||
| MTBF (values differ) | 50,000 hrs | — |
| Duty Cycle (values differ) | 24 7 continuous | — |
| Safety | ||
| Dual Check Safety (values differ) | Yes | — |
| Safety I/O Pairs (values differ) | 2 | — |
| Controller & Programming | ||
| Controller Model (values differ) | OmniCore™ | KR C5, KR C5 micro |
| Programming Languages (values differ) | RAPID | — |
| Teach Pendant Type (values differ) | wired touch | — |
| Offline Programming (values differ) | RobotStudio | — |
| Digital Twin Support (values differ) | Yes | — |
| Connectivity | ||
| IoT / Cloud Platform (values differ) | ABB Ability | — |
| Predictive Maintenance (values differ) | threshold based | — |
| End-Effector | ||
| Tool Flange Standard (values differ) | iso 9283 | — |
| Internal Cable Routing (values differ) | through arm and wrist | — |
| Pneumatic Lines (values differ) | 1 | — |
| Commercial | ||
| Price (USD) (values differ) | $65,000 USD | $19,000–$84,900 USD |
| Warranty (values differ) | 1 yrs | 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, Max TCP Speed, Cycle Time (25/305/25), Vibration Damping, Safety Category, E-Stop Response, Safe Zone Count, Communication Protocols, ROS-Industrial Support, Cybersecurity Certs, Tool Changer (ISO), 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 | ABB IRB 120 FlexMove | KR 120 R3900-2 K |
|---|---|---|
| Investment | $65,000 | $51,950 |
| Payback period | 15.6 mo | 12.5 mo |
| Net savings (5 yr) | $185,000 | $198,050 |
| ROI (5 yr) | +285% | +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 ABB IRB 120 FlexMove and KR 120 R3900-2 K?
ABB IRB 120 FlexMove is made by ABB, based in CH. KR 120 R3900-2 K is made by KUKA Robotics, based in DE.
When were ABB IRB 120 FlexMove and KR 120 R3900-2 K launched?
ABB IRB 120 FlexMove launched in 2018. KR 120 R3900-2 K launched in 2015.
How do ABB IRB 120 FlexMove and KR 120 R3900-2 K compare on the Robo Score?
ABB IRB 120 FlexMove scores 72.8 on the Robo Score. KR 120 R3900-2 K scores 78.0. The Robo Score is a 0–100 credibility figure blending commercial maturity, verified deployments, company standing, and independent coverage — see methodology for the full breakdown.
How does the reach of ABB IRB 120 FlexMove compare to KR 120 R3900-2 K?
ABB IRB 120 FlexMove has a reach of 580 mm. KR 120 R3900-2 K has a reach of 3904 mm.
Are ABB IRB 120 FlexMove 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 ABB IRB 120 FlexMove 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
ABB IRB 120 FlexMove 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.