GEN72-B vs NB4
Side-by-side comparison of GEN72-B (RealMan Robotics) and NB4 (Beijing ROKAE Technology Co., Ltd.) — specs, pricing, Robo Index, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Healthcare & Hospitals buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- GEN72-BChina
- NB4China
Year First Available
- GEN72-B2024
- NB4—
Verified Deployments
- GEN72-B0 Deployments
- NB40 Deployments
Layer 2: Operational
Price
- GEN72-BContact for quote
- NB4$14,999–$17,490 USD
Availability Status
- GEN72-BACTIVE
- NB4ACTIVE
Arm Mechanics
Repeatability
- GEN72-B±1 mm
- NB4±0.015 mm
IP Rating (Arm)
- GEN72-BIP54
- NB4IP54
Reach
- GEN72-B600 mm
- NB4475 mm
Payload
- GEN72-B2 kg
- NB44 kg
Degrees of Freedom
- GEN72-B—
- NB46
Max TCP Speed
- GEN72-B1.9 m/s
- NB4—
Robot Weight
- GEN72-B6.6 kg
- NB421 kg
Performance
MTBF
- GEN72-B30,000 hrs
- NB4—
Controller & Programming
Controller Model
- GEN72-B統合型
- NB4—
End-Effector
Pneumatic Lines
- GEN72-B—
- NB44
Electrical Lines
- GEN72-B—
- NB48
Commercial
Price (USD)
- GEN72-BContact for quote
- NB4$14,999–$17,490 USD
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country | China | China |
| Year First Available (values differ) | 2024 | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | Contact for quote | $14,999–$17,490 USD |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Repeatability (priority for Healthcare & Hospitals buyers) (values differ) | ±1 mm | ±0.015 mm |
| IP Rating (Arm) (priority for Healthcare & Hospitals buyers) | IP54 | IP54 |
| Reach (priority for Healthcare & Hospitals buyers) (values differ) | 600 mm | 475 mm |
| Payload (values differ) | 2 kg | 4 kg |
| Degrees of Freedom (values differ) | — | 6 |
| Max TCP Speed (values differ) | 1.9 m/s | — |
| Robot Weight (values differ) | 6.6 kg | 21 kg |
| Performance | ||
| MTBF (values differ) | 30,000 hrs | — |
| Controller & Programming | ||
| Controller Model (values differ) | 統合型 | — |
| End-Effector | ||
| Pneumatic Lines (values differ) | — | 4 |
| Electrical Lines (values differ) | — | 8 |
| Commercial | ||
| Price (USD) (values differ) | Contact for quote | $14,999–$17,490 USD |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Battery / Shift Runtime, Path Accuracy, IP Rating (Wrist), Cycle Time (25/305/25), 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, Warranty, Service Network, 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 | GEN72-B | NB4 |
|---|---|---|
| Investment | No price | $16,245 |
| Payback period | — | 3.9 mo |
| Net savings (5 yr) | — | $233,756 |
| ROI (5 yr) | — | +1439% |
GEN72-B 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 GEN72-B and NB4?
GEN72-B is made by RealMan Robotics, based in CN. NB4 is made by Beijing ROKAE Technology Co., Ltd., based in CN.
How do GEN72-B and NB4 compare on the Robo Index?
GEN72-B grades AA on the Robo Index. NB4 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.
Are GEN72-B and NB4 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 GEN72-B and NB4?
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
GEN72-B vs NB4 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.