Professional 880W hammer drill with SDS-Plus chuck. The GBH 2-28 Professional is the most powerful tool in the category of Bosch SDS plus 2 kg corded hammer drills. Its robust motor performs powerful drilling with an outstanding impact energy of 3.2 J. The hammer drill also has a KickBack Control function, which protects the user, and the Vibration Control function enables fatigue-free and continuous work in time-consuming applications.

- Nominal absorbed power: 880 W
- Impact energy: 3.2 J
- Number of blows at nominal speed (blows/minute): 0 - 4000 blows/minute
- Nominal speed: 0 - 900 1/min
- Weight: 2.9 kg
- Length: 379 mm
- Height: 216 mm
- Tool holder: SDS-plus

Drilling range
- Drilling diameter, concrete, hammer drill bits: 4 - 28 mm
- Opt. alk. range, concrete, hammer drill bits: 8 - 16 mm
- Hole diameter in concrete with hollow drill bits: 68 mm
- Max. drilling diameter, masonry, hollow drill bits: 68 mm
- Max. hole diameter, steel: 13 mm
- Max. hole diameter, wood: 30 mm

Percussion drilling in concrete
- Vibration emission value ah: 11.5 m/s²
- Uncertainty K: 1.5 m/s²

Engraving
- Vibration emission value ah: 11 m/s²
- Uncertainty K: 1.5 m/s²