Practical Guide
Mirka PROS 625CV – The Professional Pneumatic Random Orbital Sander for Fine Surfaces
The Mirka PROS 625CV is a powerful pneumatic random orbital sander with a 150 mm pad and 2.5 mm orbit – designed for low-dust sanding, precise results, and maximum ergonomics. Thanks to its low weight (0.9 kg) and central dust extraction, it operates quietly, with minimal vibration and high efficiency – ideal for painters, body shops, and furniture workshops.
Technical Overview
| Parameter | Value |
|---|---|
| Orbit | 2.5 mm |
| Pad size | 150 mm |
| Speed | 12,000 rpm |
| Power | 270 W |
| Air consumption | approx. 485 l/min |
| Noise level | approx. 75 dB(A) |
| Vibration (reference) | 3.8 m/s² |
2.5 mm Orbit
Fine finishing
Fine finishing
Central Extraction
Clean & low-dust
Clean & low-dust
270 W Power
Efficient & durable
Efficient & durable
Tip: Use a clean, oiled air supply (6.2 bar operating pressure, 10 mm hose diameter). This ensures consistent speed and extends the life of your sander.
Recommended Basic Settings (Reference Values)
- Air pressure: 6.2 bar (90 psi)
- Hose diameter: 10 mm
- Hose length: max. 8 m
- Daily lubrication with 2–3 drops of pneumatic oil
- Always mount the pad with a washer
Pro Workflow: Perfect Finish in 6 Steps
- Secure the workpiece and connect the dust extraction.
- Check air pressure (6.2 bar) and briefly run the tool idle.
- Attach the suitable abrasive (e.g. Mirka Abranet).
- Guide evenly over the surface without tilting.
- Regularly vacuum dust and inspect the abrasive disc.
- After use, add oil to the air inlet and run briefly.
Troubleshooting – Common Problems & Solutions
| Problem | Cause | Solution |
|---|---|---|
| Low speed | Insufficient air pressure | Increase pressure to 6.2 bar |
| Uneven operation | Wrong pad or excessive suction | Use original pad, adjust suction |
| Air leak | Dirty valve | Clean or replace valve |
| Strong vibration | Worn bearings | Replace bearings / contact service |
Maintenance (5 Points)
- Add 2–3 drops of oil to the air inlet daily
- Regularly inspect the sanding pad for wear
- Replace the pad brake if braking weakens
- Clean or replace the silencer regularly
- Use only original Mirka spare parts
FAQ
- What is the ideal air pressure? – 6.2 bar during operation is recommended.
- Can I use other pads? – Only genuine Mirka pads ensure balance and safety.
- How often should it be oiled? – Daily lubrication is required for regular use.
- How loud is the sander? – Approx. 75 dB(A).
- How do I reduce vibration? – Use a soft interface pad and ensure proper centering.
*All values are reference values according to the Mirka operating manual. Subject to change.*
