Bosch Professional GBH 3-28 DFR Rotary Hammer

The Bosch Professional GBH 3-28 DFR Rotary Hammer is a corded 800 W machine for construction, installation, renovation, and demanding DIY work. It drills, hammer-drills, and handles light chiselling, while also supporting screwdriving. Maximum drilling diameters are 30 mm in wood, 13 mm in steel, and 28 mm in concrete. The concrete capacity accommodates anchor and fixing holes within that rated limit. Mains power removes the need to manage battery charge during longer jobs.

At 3.6 kg, the drill uses an L-shaped body intended to distribute its weight and aid control in confined areas. Integrated vibration damping and a soft-grip surface are provided for extended operation. The SDS plus interchangeable chuck system switches to a conventional chuck for non-impact drilling with standard bits. Adjustable speed gives finer control when starting a hole or driving screws. A carrying case, auxiliary handle, and depth gauge are supplied. The auxiliary handle and gauge support steadier positioning and repeatable drilling depth.

• 3.1 J maximum impact energy for concrete drilling and light chiselling.
• Up to 4,000 impacts per minute for hammer-drilling applications.
• 0–900 RPM no-load speed range supports controlled starts and faster drilling.
• Overload clutch provides protection if the accessory binds.
• Forward and reverse rotation supports screwdriving and bit withdrawal.
• No drill bits or screwdriver bits are included.