Rizon 4 vs OB7 Stretch
Side-by-side comparison of Rizon 4 (Flexiv Ltd.) and OB7 Stretch (Productive Robotics, LLC.) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.
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Optimized for Agriculture buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- Rizon 4China
- OB7 StretchUnited States
Year First Available
- Rizon 42016
- OB7 Stretch2017
Verified Deployments
- Rizon 40 Deployments
- OB7 Stretch0 Deployments
Layer 2: Operational
Price Range (USD)
- Rizon 4$35,000–$65,000
- OB7 Stretch$24,900
Availability Status
- Rizon 4ACTIVE
- OB7 StretchACTIVE
Arm Mechanics
IP Rating
- Rizon 4IP65
- OB7 StretchIP54
Payload
- Rizon 44 kg
- OB7 Stretch4.5 kg
Reach
- Rizon 4919 mm
- OB7 Stretch1,000 mm
Degrees of Freedom
- Rizon 47
- OB7 Stretch7
Repeatability
- Rizon 4±0.05 mm
- OB7 Stretch±0.1 mm
Robot Weight
- Rizon 420 kg
- OB7 Stretch22 kg
Mounting Options
- Rizon 4floor, ceiling, wall, inverted
- OB7 Stretchfloor, ceiling, wall
Safety
Safety Rating
- Rizon 4ISO 13849 PL=d, ISO 10218
- OB7 StretchISO/TS 15066
Force/Torque Sensing
- Rizon 4integrated wrist ft
- OB7 Stretchnone
Ease of Use
Setup Time
- Rizon 4—
- OB7 Stretch1 hrs
No-Code Capable
- Rizon 4Yes
- OB7 StretchYes
Offline Programming
- Rizon 4No
- OB7 StretchYes
Programming Interface
- Rizon 4Flexiv Elements, Robot Development Kit (RDK)
- OB7 StretchDrag-and-drop
End-Effector
Tool Flange Standard
- Rizon 4—
- OB7 StretchISO 9409-1-A50
Software & Connectivity
Fieldbus Protocols
- Rizon 4—
- OB7 StretchEtherCAT, Profinet
Commercial
Price (USD)
- Rizon 4$35,000–$65,000
- OB7 Stretch$24,900
Warranty
- Rizon 4—
- OB7 Stretch2 yrs
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | China | United States |
| Year First Available (values differ) | 2016 | 2017 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $35,000–$65,000 | $24,900 |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| IP Rating (priority for Agriculture buyers) (values differ) | IP65 | IP54 |
| Payload (priority for Agriculture buyers) (values differ) | 4 kg | 4.5 kg |
| Reach (values differ) | 919 mm | 1,000 mm |
| Degrees of Freedom | 7 | 7 |
| Repeatability (values differ) | ±0.05 mm | ±0.1 mm |
| Robot Weight (values differ) | 20 kg | 22 kg |
| Mounting Options (values differ) | floor, ceiling, wall, inverted | floor, ceiling, wall |
| Safety | ||
| Safety Rating (values differ) | ISO 13849 PL=d, ISO 10218 | ISO/TS 15066 |
| Force/Torque Sensing (values differ) | integrated wrist ft | none |
| Ease of Use | ||
| Setup Time (values differ) | — | 1 hrs |
| No-Code Capable | Yes | Yes |
| Offline Programming (values differ) | No | Yes |
| Programming Interface (values differ) | Flexiv Elements, Robot Development Kit (RDK) | Drag-and-drop |
| End-Effector | ||
| Tool Flange Standard (values differ) | — | ISO 9409-1-A50 |
| Software & Connectivity | ||
| Fieldbus Protocols (values differ) | — | EtherCAT, Profinet |
| Commercial | ||
| Price (USD) (values differ) | $35,000–$65,000 | $24,900 |
| Warranty (values differ) | — | 2 yrs |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Battery / Shift Runtime, Max TCP Speed, TCP Speed (Collaborative), Power/Force Limiting, Safety I/O Pairs, Duty Cycle, Time to Redeploy, Tool Changer Support, Integrated F/T Sensor, Wrist Power Supply, SDK Languages, ROS Compatible, Digital Twin Support, MTBF, Path Accuracy, CaaS / Month, Lead Time
best in categoryweakest in categoryvalues differ
Trade-offs at a glance
Frequently asked
Who makes Rizon 4 and OB7 Stretch?
Rizon 4 is made by Flexiv Ltd., based in CN. OB7 Stretch is made by Productive Robotics, LLC., based in US.
When were Rizon 4 and OB7 Stretch launched?
Rizon 4 launched in 2016. OB7 Stretch launched in 2017.
How do Rizon 4 and OB7 Stretch compare on the Robolist Product Score?
Rizon 4 scores 82/100. OB7 Stretch scores 97/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
How does the reach of Rizon 4 compare to OB7 Stretch?
Rizon 4 has a reach of 919 mm. OB7 Stretch has a reach of 1250 mm.
Are Rizon 4 and OB7 Stretch in the same category?
Both robots are classified as Cobot on Robolist. Filters and ranking treat them as direct alternatives.
What is the realistic total cost of ownership for Cobot robots?
Hardware cost is one input. Cobot TCO also includes integration, training, downtime, and end-of-life. Our breakdown: Cobot TCO and Payback Math: Hardware, EOAT, and Zero-Fencing Savings.
What should a buyer ask vendors when choosing between Rizon 4 and OB7 Stretch?
Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: Cobot Vendor Red Flags: Questions That Filter Out the Marketing.
Going deeper — picking the right robot
Cobot TCO and Payback Math: Hardware, EOAT, and Zero-Fencing Savings
6 min readCollaborative Robots
Cobot Vendor Red Flags: Questions That Filter Out the Marketing
9 min readCollaborative Robots
Running a Cobot Pilot in a Manual Production Line
9 min readCollaborative Robots
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
About this comparison
Rizon 4 vs OB7 Stretch compares two robots in the cobot category. All data is sourced from manufacturer spec sheets, verified deployments, and third-party filings; see our methodology for how the Robolist Product Score is calculated.