Practical Guide
.png?ts=1761572747)
Mirka DEROS II 550 – Professional Sanding with Maximum Control
The Mirka DEROS II 550 represents the next generation of dust-free sanding technology. Developed for professionals who demand the highest surface quality with minimal vibration, it combines power, ergonomics, and connectivity. In this practical guide, you will learn how to optimally utilize the potential of the DEROS II 550 in daily use – from basic settings to maintenance.
Product Overview
| Parameter | DEROS II 550 |
|---|---|
| Power | 400 W |
| Mains Voltage | 220–240 V AC |
| Speed Range | 4,000 – 10,000 rpm |
| Orbit | 5.0 mm |
| Backing Pad | Ø 125 mm |
| Weight | 1.0 kg |
| Bluetooth | Yes – via myMirka App |
71 dB(A)
Sound Power Level
3.4 m/s²
Vibration Value ah
400 W
Continuous Power
Tip: When sanding with a soft pad, use a reduced speed of max. 7,000 rpm. This minimizes vibration and provides a more uniform sanding pattern.
Recommended Basic Settings (Guide Values)
- Material: Wood – Speed 7,000 – 9,000 rpm
- Filler / Primer – 5,000 – 8,000 rpm
- Paint / Intermediate Sanding – 4,000 – 6,000 rpm
- With Soft Pad – max. 7,000 rpm
- With Edge Protector – normal operation up to 10,000 rpm
Professional Workflow in 6 Steps
- Connect the power cable correctly (220 – 240 V AC).
- Place the appropriate Mirka Net® abrasive disc onto the pad – centered and flat.
- Connect the extraction hose, set the vacuum cleaner to Auto-Start.
- Precisely set the speed using Speed + / Speed –.
- Start the sanding process while moving – do not start on a stationary surface!
- Switch off the machine after use and empty the dust bag.
Troubleshooting (4 Typical Problems)
| Symptom | Cause | Solution |
|---|---|---|
| LED flashes red/green | Incorrect mains voltage | Connect to correct socket |
| No function | Cable not properly connected | Check / re-connect plug |
| Speed drops sharply | Overheating / too much pressure | Briefly reduce pressure, allow to cool down |
| Backing pad brake does not engage | Brake or bearing worn | Replace brake, check bearing |
Maintenance Recommendations
- Disconnect from mains before any maintenance.
- Use only original Mirka parts.
- Regularly check the backing pad and replace it if worn.
- Keep the pad brake clean – replace if necessary.
- Daily cleaning of the dust catcher for constant suction performance.
FAQ
- How do I connect Bluetooth? By holding the "Speed+" button while switching on – LED flashes blue when connected.
- Which vacuum cleaners are compatible? All Mirka industrial vacuum cleaners with an auto-start function.
- How can I reduce vibrations? Use a soft pad and limit the speed to max. 7,000 rpm.
- When should I change the pad brake? When the pad overruns or drags.
- How do I store the machine correctly? Dust-free, dry, in the original case or tool trolley.
Conclusion
The Mirka DEROS II 550 combines precision, ergonomics, and digital control in a tool that should not be missing in any professional workshop. With correct settings, regular maintenance, and dust-free extraction, you will achieve long-lasting surface results at the highest level.
