The GBH 3-28 DFR offers best-in-class versatility in Bosch’s SDS-Plus corded rotary hammer range.
Its compact housing allows use in narrow spaces, while the L-shaped design provides balanced weight distribution.
The 800 W motor delivers 3.1 J impact energy with a high power-to-weight ratio (3.6 kg), ensuring fast drilling progress and reduced fatigue.
Equipped with vibration control, reverse mode, rotation control clutch, variable speed, and Vario-Lock, it is tailored for continuous, effortless work.
The quick-change chuck system allows switching between SDS-Plus and keyless chucks for round shaft drill bits, expanding its application range.
Compatible with dust attachments, this tool is ideal for professional construction and renovation projects.
TECHNICAL DETAILS:
| Specification | Details |
| Brand | Bosch Professional |
| Model | GBH 3-28 DFR |
| Type | Rotary Hammer |
| Power Input | 800 W |
| Voltage | 230 V |
| Frequency | 50–60 Hz |
| No Load Speed | 0–900 rpm |
| Impact Rate | 0–4000 bpm |
| Impact Energy | 3.1 J |
| Tool Holder | SDS-Plus (quick-change chuck) |
| Weight | 3.6 kg |
| Drilling Capacity (Concrete) | 4–28 mm (optimal 12–18 mm) |
| Drilling Capacity (Wood) | ~30 mm (typical) |
| Drilling Capacity (Steel) | ~13 mm (typical) |
| Vibration (Hammer drilling in concrete) | 11.8 m/s² (K=1.5) |
| Vibration (Chiselling in concrete) | 10 m/s² (K=1.5) |
| Features | Vibration Control, reverse mode, rotation control clutch, variable speed, Vario-Lock |
| Applications | Drilling and chiselling in concrete, masonry, wood, metal |
| Accessories | Quick-change chuck, keyless chuck, side handle, depth stop |
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