Gbs50-K2178 vs KR 120 R3900-2 K
Side-by-side comparison of Gbs50-K2178 (Gongboshi Robot Technology Co., Ltd.) and KR 120 R3900-2 K (KUKA Robotics) — specs, pricing, Robo Index, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Agriculture buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- Gbs50-K2178—
- KR 120 R3900-2 KGermany
Year First Available
- Gbs50-K2178—
- KR 120 R3900-2 K2015
Verified Deployments
- Gbs50-K21780 Deployments
- KR 120 R3900-2 K0 Deployments
Layer 2: Operational
Price
- Gbs50-K2178Contact for quote
- KR 120 R3900-2 K$19,000–$84,900 USD
Availability Status
- Gbs50-K2178ACTIVE
- KR 120 R3900-2 KACTIVE
Arm Mechanics
IP Rating (Arm)
- Gbs50-K2178IP 65
- KR 120 R3900-2 KIP65
Payload
- Gbs50-K217850 kg
- KR 120 R3900-2 K146 kg
Reach
- Gbs50-K21782,178 mm
- KR 120 R3900-2 K3,904 mm
Degrees of Freedom
- Gbs50-K21784
- KR 120 R3900-2 K6
Repeatability
- Gbs50-K2178±0.2 mm
- KR 120 R3900-2 K±0.04 mm
Robot Weight
- Gbs50-K2178616 kg
- KR 120 R3900-2 K42 kg
IP Rating (Wrist)
- Gbs50-K2178—
- KR 120 R3900-2 KIP67
Performance
Duty Cycle
- Gbs50-K2178continuous 24 7
- KR 120 R3900-2 K—
Controller & Programming
Controller Model
- Gbs50-K2178—
- KR 120 R3900-2 KKR C5, KR C5 micro
Teach Pendant Type
- Gbs50-K2178wired touch
- KR 120 R3900-2 K—
Connectivity
ROS-Industrial Support
- Gbs50-K2178none
- KR 120 R3900-2 K—
Predictive Maintenance
- Gbs50-K2178ml based
- KR 120 R3900-2 K—
End-Effector
Tool Flange Standard
- Gbs50-K2178ISO 9409-1
- KR 120 R3900-2 K—
Internal Cable Routing
- Gbs50-K2178through arm
- KR 120 R3900-2 K—
Commercial
Price (USD)
- Gbs50-K2178Contact for quote
- KR 120 R3900-2 K$19,000–$84,900 USD
Warranty
- Gbs50-K2178—
- KR 120 R3900-2 K2 yrs
Service Network
- Gbs50-K2178regional
- KR 120 R3900-2 Kglobal
| | |
|---|---|---|
| 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) | Contact for quote | $19,000–$84,900 USD |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| IP Rating (Arm) (priority for Agriculture buyers) (values differ) | IP 65 | IP65 |
| Payload (priority for Agriculture buyers) (values differ) | 50 kg | 146 kg |
| Reach (values differ) | 2,178 mm | 3,904 mm |
| Degrees of Freedom (values differ) | 4 | 6 |
| Repeatability (values differ) | ±0.2 mm | ±0.04 mm |
| Robot Weight (values differ) | 616 kg | 42 kg |
| 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 |
| Teach Pendant Type (values differ) | wired touch | — |
| Connectivity | ||
| ROS-Industrial Support (values differ) | none | — |
| Predictive Maintenance (values differ) | ml based | — |
| End-Effector | ||
| Tool Flange Standard (values differ) | ISO 9409-1 | — |
| Internal Cable Routing (values differ) | through arm | — |
| Commercial | ||
| Price (USD) (values differ) | Contact for quote | $19,000–$84,900 USD |
| Warranty (values differ) | — | 2 yrs |
| Service Network (values differ) | regional | 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, IoT / Cloud Platform, 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 | Gbs50-K2178 | KR 120 R3900-2 K |
|---|---|---|
| Investment | No price | $51,950 |
| Payback period | — | 12.5 mo |
| Net savings (5 yr) | — | $198,050 |
| ROI (5 yr) | — | +381% |
Gbs50-K2178 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 Gbs50-K2178 and KR 120 R3900-2 K?
Gbs50-K2178 is made by Gongboshi Robot Technology Co., Ltd.. KR 120 R3900-2 K is made by KUKA Robotics, based in DE.
How do Gbs50-K2178 and KR 120 R3900-2 K compare on the Robo Index?
Gbs50-K2178 grades BBB on the Robo Index. KR 120 R3900-2 K grades AAA. 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 Gbs50-K2178 compare to KR 120 R3900-2 K?
Gbs50-K2178 has a reach of 2220 mm. KR 120 R3900-2 K has a reach of 3904 mm.
Are Gbs50-K2178 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 Gbs50-K2178 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
Want to be notified when specs or pricing change for these robots? Drop your email.
Other comparisons
About this comparison
Gbs50-K2178 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 Index is calculated.