The BOSCH GBH 3-28 DFR Professional is a high-performance 800W SDS-Plus rotary hammer engineered for professional drilling and chiselling applications. Featuring a powerful 3.1–3.5J impact energy, an ergonomic L-shaped design, and balanced weight distribution, this rotary hammer delivers superior comfort, precision, and efficiency for demanding construction and renovation work.

Key Features

• Professional-grade 800W rotary hammer for heavy-duty applications
• Powerful 3.1–3.5 Joules impact energy for fast drilling performance
• SDS-Plus tool holder for quick and secure bit changes
• Ergonomic L-shaped body with balanced weight distribution for comfortable operation
• Rotation stop function for chiselling applications
• Variable speed control up to 900 RPM
• Impact rate up to 4,000 BPM for efficient concrete drilling
• Suitable for concrete, masonry, metal, and wood drilling
• Durable Bosch Professional quality for jobsite use

Specifications

• Brand: BOSCH
• Model: GBH 3-28 DFR Professional
• Rated Input Power: 800W
• Impact Energy: 3.1–3.5J
• Rated Speed: 0–900 RPM
• Impact Rate: 0–4,000 BPM
• Tool Holder: SDS-Plus
• Weight: 3.6kg
• Dimensions:
  • Length: 354mm
  • Height: 233mm

Drilling Capacity

• Concrete (Hammer Drill Bits): 4–28mm
• Recommended Concrete Range: 12–18mm
• Concrete Core Cutters: Up to 68mm
• Masonry Core Cutters: Up to 82mm
• Metal: Up to 13mm
• Wood: Up to 30mm

Vibration Information

• Hammer Drilling in Concrete:
  • Vibration Emission (ah): 13m/s²
  • Uncertainty (K): 2m/s²
• Chiselling:
  • Vibration Emission (ah): 9.5m/s²
  • Uncertainty (K): 1.5m/s²

Suitable For

• Professional contractors
• Construction work
• Building renovation
• Concrete drilling
• Masonry drilling
• Chiselling applications
• Electrical installation
• Plumbing installation
• Mechanical installation
• General construction projects