KR 120 R3900-2 K vs Smart Slider- Website
Side-by-side comparison of KR 120 R3900-2 K (KUKA Robotics) and Smart Slider- Website (Nachi Robotics) — specs, pricing, Robo Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Layer 1: Identity & Trust
Manufacturer Country
- KR 120 R3900-2 KGermany
- Smart Slider- Website—
Year First Available
- KR 120 R3900-2 K2015
- Smart Slider- Website—
Verified Deployments
- KR 120 R3900-2 K0 Deployments
- Smart Slider- Website0 Deployments
Layer 2: Operational
Price
- KR 120 R3900-2 K$19,000–$84,900 USD
- Smart Slider- WebsiteContact for quote
Availability Status
- KR 120 R3900-2 KACTIVE
- Smart Slider- WebsiteACTIVE
Arm Mechanics
Payload
- KR 120 R3900-2 K146 kg
- Smart Slider- Website500 kg
Reach
- KR 120 R3900-2 K3,904 mm
- Smart Slider- Website3,756 mm
Degrees of Freedom
- KR 120 R3900-2 K6
- Smart Slider- Website7
Repeatability
- KR 120 R3900-2 K±0.04 mm
- Smart Slider- Website±0.07 mm
Robot Weight
- KR 120 R3900-2 K42 kg
- Smart Slider- Website1,620 kg
IP Rating (Arm)
- KR 120 R3900-2 KIP65
- Smart Slider- WebsiteIP67
IP Rating (Wrist)
- KR 120 R3900-2 KIP67
- Smart Slider- Website—
Performance
Duty Cycle
- KR 120 R3900-2 K—
- Smart Slider- Websitecontinuous 24 7
Controller & Programming
Controller Model
- KR 120 R3900-2 KKR C5, KR C5 micro
- Smart Slider- WebsiteFD11
Teach Pendant Type
- KR 120 R3900-2 K—
- Smart Slider- Websitewired touch
End-Effector
Tool Flange Standard
- KR 120 R3900-2 K—
- Smart Slider- WebsiteISO 9409-1
Internal Cable Routing
- KR 120 R3900-2 K—
- Smart Slider- Websitethrough arm and wrist
Commercial
Price (USD)
- KR 120 R3900-2 K$19,000–$84,900 USD
- Smart Slider- WebsiteContact for quote
Warranty
- KR 120 R3900-2 K2 yrs
- Smart Slider- Website—
Service Network
- KR 120 R3900-2 Kglobal
- Smart Slider- Websiteglobal
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Germany | — |
| Year First Available (values differ) | 2015 | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | $19,000–$84,900 USD | Contact for quote |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Payload (values differ) | 146 kg | 500 kg |
| Reach (values differ) | 3,904 mm | 3,756 mm |
| Degrees of Freedom (values differ) | 6 | 7 |
| Repeatability (values differ) | ±0.04 mm | ±0.07 mm |
| Robot Weight (values differ) | 42 kg | 1,620 kg |
| IP Rating (Arm) (values differ) | IP65 | IP67 |
| IP Rating (Wrist) (values differ) | IP67 | — |
| Performance | ||
| Duty Cycle (values differ) | — | continuous 24 7 |
| Controller & Programming | ||
| Controller Model (values differ) | KR C5, KR C5 micro | FD11 |
| Teach Pendant Type (values differ) | — | wired touch |
| 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 | Contact for quote |
| 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, Programming Languages, Offline Programming, Digital Twin Support, Communication Protocols, ROS-Industrial Support, IoT / Cloud Platform, 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 | Smart Slider- Website |
|---|---|---|
| Investment | $51,950 | No price |
| Payback period | 12.5 mo | — |
| Net savings (5 yr) | $198,050 | — |
| ROI (5 yr) | +381% | — |
Smart Slider- Website 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 R3900-2 K and Smart Slider- Website?
KR 120 R3900-2 K is made by KUKA Robotics, based in DE. Smart Slider- Website is made by Nachi Robotics.
How do KR 120 R3900-2 K and Smart Slider- Website compare on the Robo Score?
KR 120 R3900-2 K scores 78.0 on the Robo Score. Smart Slider- Website scores 57.5. 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 KR 120 R3900-2 K compare to Smart Slider- Website?
KR 120 R3900-2 K has a reach of 3904 mm. Smart Slider- Website has a reach of 3756 mm.
Are KR 120 R3900-2 K and Smart Slider- Website 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 Smart Slider- Website?
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 Smart Slider- Website 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.