- Low fatigue as never before: compact angle grinder with smallest handle circumference in its class for perfect ergonomics
- Longer service life, more power: the Metabo Marathon-motor with patented dust protection, up to 20% more overload capacity and 50% more torque
- Tool-free adjustable guard; twist-proof
- Metabo S-automatic mechanical safety clutch: minimises kick-back to the lowest level when the disc jams unexpectedly - for maxmimum user safety and swift progress
- Gear housing can be unscrewed, rotated in 90° steps and remounted for left-handed operation or cutting
- Auto-stop carbon brushes to protect the motor.
| Model | W9-125 |
| Disc - | 125 mm | 5'' |
| Rated input power | 900 W |
| Output power | 550 W |
| No-load speed | 10500 rpm |
| Speed at rated load | 7500 rpm |
| Torque | 2.5 Nm | 22 in-lbs |
| Spindle thread | M 14 |
| Handle circumference | 193 mm | 7.5594'' |
| Weight (without power cable) | 2.1 kg | 4.6 lbs |
| Cable length | 2.5 m | 8 ft |
| Vibration | |
| Surface grinding | 6 m/s |
| Uncertainty of measurement K | 1.5 m/s |
| Grinding with sandpaper | 2.5 m/s |
| Uncertainty of measurement K | 1.5 m/s |
| Noise emission | |
| Sound pressure level | 93 dB(A) |
| Sound power level (LwA) | 104 dB(A) |
| Uncertainty of measurement K | 3 dB(A) |
Video section here.
- Guard
- Inner support flange
- Nut with two holes
- Side handle
- Flat-pin spanners
Downloads section here.



