High-powered Bosch hammers

September 9, 2012


Bosch is replacing the GBH 2-26 DFR and DRE Professional models with a new rotary hammer generation.The future models, the GBH 2-28 DFV Professional and GBH 2-28 DV Professional, offer 50 watts more power and 20 percent more impact energy than their predecessors.

Vibration has been reduced by nearly 30 percent. This is made possible by active vibration damping, now introduced in SDS-plus rotary hammers for the first time anywhere in the world – a counter oscillator positioned in the gear housing permanently counteracts the air and mass forces from the hammer mechanism, therefore reducing the vibration levels from 15 m/s2 to 11 m/s2. As a result, professional tradesmen can now work with these tools for nearly twice as long as before.

These tools have an impact energy of 3.2 joules and offer the highest drilling and chiseling performance in their class. It is just as easy to cut slots and channels with them as it is to drill rows of holes, for example to fit cabling or ducting.

Both tools have tried-and-tested product features such as continuously variable speed control for clean drilling starts, a rotating brush plate for equal power in forward and reverse rotation, a rotation stop for chiseling, a ball grommet to prevent cable breaks, and an SDS-plus toolholder. The models are available with changeable chuck (DFV) and the model with fixed chuck (DV).

- CA News Network

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