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QFB140-12 QFB industrial arm
A source-based selection review of QFB140-12: 12 kg effective load and 1,400 mm working radius, with tooling, integration and safety questions kept separate from the catalog figures.
Manufacturer data with selection guidance for buyers.
Manufacturer data
Published specifications
QFB140-12 is a six-degree-of-freedom QFB arm listed by Chege Robotics. The official model page states an effective load of 12 kg, working radius of 1,400 mm and repeatability of ±0.05 mm. These are supplier-published figures, without an independent equipment trial. Confirm the complete tooling load, installation envelope and exact safety documentation before using the model in a production cell.
- Payload
- 12 kg
- Reach
- 1400 mm
- Repeatability
- 0.05 mm
- Axes
- 6
Values and units are shown as the manufacturer publishes them. Confirm the fit for your complete cell with the manufacturer.
What should drive this model decision?
Start with the fixture, not the arm length. The QFB140-12 is the shortest of these three published models and its listed body mass is about 38.5 kg. A compact workstation should still be checked with the actual flange orientation, tool length and approach path: 1,400 mm working radius does not mean every point inside that radius is usable. Its integrated controller and mobile-device teaching may simplify an initial demonstration, but the buyer still needs the exact controller version, recovery procedure and network security scope before deployment.
Record scope: [S1]
Read the specification with its conditions
| Published item / decision | How to use it | Limit to confirm |
|---|---|---|
| Degrees of freedom | 6 | Quoted by the supplier; obtain joint travel and speed tables. |
| Effective load | 12 kg | Tool, adapter and workpiece must be assessed together. |
| Working radius | 1,400 mm | A scalar maximum, not a guaranteed accessible work volume. |
| Repeatability | ±0.05 mm | Does not establish absolute accuracy or loaded path accuracy. |
| Body mass | Approximately 38.5 kg | Installation reaction loads still need a drawing. |
| Supply / typical power | 220 V / approximately 500 W | Ordinary conditions; supply sizing and maximum demand are unknown. |
| Controller / teaching | Integrated / phone, tablet, API and JSON | Exact versions, offline operation and access control need confirmation. |
| Communications | WiFi, Ethernet port, Bluetooth and RS485 | Named interfaces do not prove protocol compatibility with your PLC. |
Record scope: [S1]
Checks specific to this shortlist
Record scope: [S1]
Resolve the safety and protection claims
The model page labels the arm protection as C-T4. This notation has not been established here as an ingress protection rating, explosion-protection certification or a complete safety approval. Obtain the applicable certificate, issuing body, model scope and installation conditions before specifying use in a spray booth or hazardous atmosphere.
The QFB family is described as collaborative by its supplier. That description does not make a cell safe without guarding. Review the tool, sharp edges, workpiece, reachable trapping points, permitted operating mode and risk assessment for the complete installation.
The source does not list the six-axis force sensing range shown on the two longer model pages. Do not carry their 200 N / 7 Nm claim over to this model.
Record scope: [S1]
Agree on a measurable acceptance record
- Freeze the exact model, controller firmware, accessory list and stated load case in the quotation.
- Run the agreed loaded trajectory with representative parts and tooling. Record cycle time and stopping / recovery behaviour under the chosen operating mode.
- Separate repeatability measurements from absolute position and process-quality measurements. Agree on fixtures, measurement method and acceptance limits before the trial.
- Record backup, restore, maintenance and operator training deliverables. Request safety documents and support responsibilities for the country of installation.
Record scope: [S1]
Questions the model page does not settle
Is the listed load the usable workpiece mass?
The model page states 12 kg effective load, but it does not provide the wrist moment or inertia envelope. Include all attached tooling and ask for a reviewed load case.
Can this arm be used for explosive-atmosphere spraying?
The C-T4 text alone is insufficient to establish certification or permitted conditions. No such certification is asserted in this directory.
Does the site verify product performance?
No. This page distinguishes supplier catalog facts from platform purchasing guidance. There is no claimed factory visit, independent trial, measured production saving or expert sign-off.
Record scope: [S1]
Configuration worksheet
A model-specific worksheet has not been reviewed for this record. Use the inquiry outline to request the configuration and acceptance data.
Make the next conversation useful
Your inquiry checklist
Use the model-specific questions above to prepare one consistent brief. The checked items are temporary notes on this page; they are not submitted or saved to an account.
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Add this product to a specification comparison →Sources and check dates
[S1] Chege official QFB140-12 publication
Manufacturer statement · Source reviewed
Published model parameters only; no independent performance test or safety certification.
Background guides explain the equipment type in general. For this model, request current configuration documents, commercial scope and an application trial. How profiles are reviewed · Buyer questions