BFA-Series Robotic Electric Screwdrivers – FAQ & User Guide
The Mountz BFA-Series Robotic Electric Screwdrivers are designed for automated and fixtured assembly applications requiring accurate, repeatable torque control. Featuring a brushless motor, precision automatic shut-off clutch, remote-start operation, and ESD-safe construction, the BFA-Series delivers reliable fastening performance for robotic and automated production systems.
Quick Answer
The BFA-Series is a line of robotic-style brushless electric screwdrivers designed for automated fastening applications. Featuring a precision automatic shut-off clutch, remote-start operation, front mounting flange, and brushless motor technology, the BFA-Series provides accurate torque control and reliable continuous-duty performance for robotic and fixtured assembly systems.
Who This Is For
- Automation engineers
- Manufacturing engineers
- Robotics integrators
- Process engineers
- Quality engineers
- Machine builders
- Electronics manufacturers
- Medical device manufacturers
- Aerospace manufacturers
- Industrial automation facilities
When Should You Use This?
Use the BFA-Series when:
- Automated fastening is required
- Robotic assembly systems are being integrated
- Consistent, repeatable torque is critical
- Continuous production is required
- Remote-start operation is needed
- ESD-safe tools are required
- High production throughput is a priority
When Should You NOT Use This?
The BFA-Series may not be the best choice when:
- Manual hand-held fastening is required
- Torque and angle traceability are needed
- Programmable fastening strategies are required
- Portable or cordless operation is preferred
- Vacuum screw pickup is required
For advanced programmable fastening or torque-and-angle monitoring, consider the Mountz ECT-Series or EPT-Series.
How the BFA-Series Works
The BFA-Series uses a high-performance brushless motor to drive a precision automatic shut-off clutch.
During operation, the screwdriver:
- Receives a remote-start signal from the automation system.
- Rotates the fastener until the preset torque is achieved.
- Automatically shuts off at the programmed torque.
- Sends start and stop output signals to the control system.
- Can operate continuously in high-production environments with minimal heat buildup.
Result:
- Accurate torque control
- Repeatable fastening performance
- Reliable robotic integration
- Reduced maintenance
- Increased production efficiency
Core Features
- High-performance brushless motor
- Precision automatic shut-off clutch
- Remote-start operation
- Front mounting flange for robotic and fixtured installations
- External torque adjustment scale
- Continuous-duty operation with minimal heat buildup
- Over Heat Protection (OHP)
- Over Current Protection (OCP)
- LED status indicator
- ESD-safe construction
- Compatible with the Mountz Scout Screw Counter
- Forward and reverse operation
- Requires the STC40-FA transformer
Configuration Options
| Configuration | Best For |
|---|---|
| BFA060 | Ultra-low torque robotic fastening |
| BFA080 | Low-torque automated assembly |
| BFA120 | General precision robotic fastening |
Available Models
The BFA-Series includes robotic brushless electric screwdrivers covering torque ranges from 0.9 to 10.4 lbf.in (9.8–117.6 cN·m). All models feature remote-start operation, ESD-safe construction, and a front mounting flange for robotic integration.
BFA-Series Model Chart
| Model | Item Number | Driver Type | Torque Range | Adjustable RPM | Drive Size | Weight |
|---|---|---|---|---|---|---|
| BFA060 ESD | 145841 | Remote Start | 0.9–5.2 lbf.in (9.8–58.8 cN·m) | 700–1600 | 1/4" Female Hex | 14.5 oz |
| BFA080 ESD | 145842 | Remote Start | 0.9–6.9 lbf.in (9.8–78.4 cN·m) | 450–1000 | 1/4" Female Hex | 14.5 oz |
| BFA120 ESD | 145843 | Remote Start | 1.7–10.4 lbf.in (19.6–117.6 cN·m) | 300–700 | 1/4" Female Hex | 14.5 oz |
Model Selection Guide
| If you need: | Recommended Model |
|---|---|
| Ultra-low torque robotic fastening | BFA060 |
| Low-torque precision assembly | BFA080 |
| General robotic assembly | BFA120 |
| High-speed fastening | BFA060 |
| Higher torque robotic fastening | BFA120 |
Compatible Accessories
| Accessory | Purpose |
|---|---|
| STC40-FA Transformer | Required power supply |
| Scout Screw Counter | Screw counting and error-proofing |
| 1/4" Hex Power Bits | Fastening applications |
| Robotic Mounting Hardware | Automated integration |
Transformer
The BFA-Series requires the STC40-FA transformer for operation.
The STC40-FA provides:
- 30/40 VDC output
- Over Heat Protection (OHP)
- Over Current Protection (OCP)
- LED tool status display
- Compatibility with the Mountz Scout Screw Counter
The transformer supports all BFA-Series models and is designed for continuous production environments.
Setup & Adjustment
- Mount the BFA-Series screwdriver using the integrated front mounting flange.
- Connect the screwdriver to the STC40-FA transformer.
- Connect the transformer to the automation controller or PLC.
- Install the appropriate 1/4" hex driver bit.
- Adjust the torque setting using the external torque adjustment scale.
- Verify torque output with a calibrated torque analyzer before production.
- Connect the Scout Screw Counter if screw counting or error-proofing is required.
- Run sample fastening cycles and verify communication with the robotic system before beginning production.
- High-volume production environments requiring remote-start fastening
Use Cases (Real-World Examples)
Robotic Assembly
Problem: Automated assembly systems require a screwdriver that delivers consistent torque while integrating easily with robotic equipment.
Solution: The BFA-Series features remote-start operation, a front mounting flange, and a precision automatic shut-off clutch, making it well suited for robotic and fixtured fastening applications.
Electronics Manufacturing
Problem: Sensitive electronic assemblies require repeatable torque while protecting components from electrostatic discharge.
Solution: All BFA-Series models are ESD-safe and provide accurate torque control for static-sensitive production environments.
High-Volume Automated Production
Problem: Automated production lines require fastening tools capable of continuous operation with minimal maintenance.
Solution: The brushless motor design minimizes heat buildup, reduces maintenance requirements, and provides reliable continuous-duty performance.
Error-Proofing Applications
Problem: Manufacturers need to verify that every required fastener has been installed before completing an assembly.
Solution: The BFA-Series can be connected to the Mountz Scout Screw Counter to support screw counting and improve assembly quality.
Maintenance
- Verify torque output regularly using a calibrated torque analyzer.
- Inspect the drive spindle and bit holder for wear or damage.
- Keep the screwdriver clean and free of dust or debris.
- Inspect cables and electrical connections before operation.
- Verify the mounting flange remains securely fastened.
- Replace worn driver bits as needed to maintain fastening accuracy.
- Periodically verify torque settings as part of your preventive maintenance program.
Integration & Advanced Features
- High-performance brushless motor
- Precision automatic shut-off clutch
- Remote-start operation
- Front mounting flange for robotic integration
- Start and stop output signals
- Forward and reverse operation by switch
- External torque adjustment
- Continuous-duty operation with minimal heat buildup
- Over Heat Protection (OHP)
- Over Current Protection (OCP)
- LED tool status indication
- ESD-safe construction
- Compatible with the Mountz Scout Screw Counter
- Requires the STC40-FA transformer
Media & Supporting Content

- BFA-Series Product Page
- BFA-Series Data Sheet
- STC40-FA Transformer Information
- Scout II Screw Counter
- MSP-Series Automation Screw Presenters
Related Content
- Mountz Power Tools Service Card
- Mountz Brushless Tools Bang Sheet
- Mountz Power Tools Bang Sheet
- Webinar: How to Ensure Screws are Tightened in the Correct Fastening Sequence
- Webinar: Achieve a Zero-Defect Manufacturing Process Using Automated Screwdriver Systems
- Guide: Boosting Assembly Productivity: Power Torque Tools Merge Precision and Speed to Minimize Errors
Need Help?
- Contact Applications Engineering for setup guidance
- Speak with Sales for product selection
- Call us:
- North America:(408) 850-9978
- International: +44 1428 741756