Cordless File Belt Sander Mirka® FBS-B 10 & 13
Experience precision sanding without cables with the Mirka® FBS-B. Whether in bodywork repair, the workshop, or for delicate finishing tasks – this compact file belt sander delivers performance, ergonomics, and mobility at a professional level.
Product Overview: Variants & Technical Data
| Parameter | FBS-B 10 | FBS-B 13 |
|---|---|---|
| Voltage | 12 V DC | 12 V DC |
| Speed range | 2,200–18,000 rpm | 2,200–18,000 rpm |
| Belt size | 10 × 330 mm | 13 × 457 mm |
| Belt speed | 2.6–20.5 m/s | 2.5–19.6 m/s |
| Weight (without battery) | 0.70 kg | 0.74 kg |
| Charging time | <50 min (2.5 Ah) / <100 min (5.0 Ah) | |
| Sound pressure level | 72 dB(A) | |
Cordless & mobile
12V Li-Ion battery with smart control
Precision arms
Tiltable from -90° to +90° for any working angle
Digital control
LED status & Bluetooth® myMirka app connectivity
Recommended Base Settings (Reference Values)
| Material | Recommended speed | Belt speed |
|---|---|---|
| Metal | 15,000–18,000 rpm | 18–20 m/s |
| Plastic | 6,000–9,000 rpm | 10–12 m/s |
| Wood | 9,000–12,000 rpm | 12–15 m/s |
| Paint / Filler | 4,000–6,000 rpm | 8–10 m/s |
Professional Workflow: 6 Steps to a Perfect Finish
- Fully charge the battery and inspect the sanding belt.
- Adjust the arm to the desired angle (-90° to +90°).
- Mount and center the sanding belt properly.
- Set the speed using rpm+ / rpm– or lock the mode.
- Sand with steady pressure, keeping surface contact.
- After finishing, remove the battery, clean and store the tool.
Troubleshooting: Common Issues & Solutions
| Symptom | Possible Cause | Solution |
|---|---|---|
| LED turns red, speed drops | Overheating or too much pressure | Reduce pressure, let tool cool briefly |
| Tool won’t start | Battery empty or not locked in | Check and reinsert the battery |
| LED blinking red | Battery fault or low voltage | Recharge or replace the battery |
| No response despite full battery | Tool malfunction | Contact service center |
Maintenance & Care
- Remove the battery before any maintenance
- Use only genuine Mirka spare parts
- Regularly replace and center the sanding belt
- Clean the housing with a damp cloth (no alcohol)
- Keep the charger dry and clean
FAQ – Frequently Asked Questions
1. How can I check the battery status?
Via the left LED: Green = OK, Red = empty, Blinking = low charge.
2. Can I use the sander in any position?
Yes, thanks to the swiveling arm adjustable from -90° to +90°.
3. How do I activate Bluetooth?
Insert the battery, hold rpm+, and press the trigger – the LED flashes green.
4. How long does charging take?
About 50 minutes (2.5 Ah) or 100 minutes (5.0 Ah).
5. What if the LED turns red during sanding?
Reduce pressure and allow the machine to cool briefly.
Conclusion: The Mirka® FBS-B is the perfect companion for precision sanding without cables. With variable speed, compact design, and smart digital control, it ensures maximum efficiency — ideal for workshops, industry, or mobile use.
