Bosch GBH 2-28 F SDS+ Plus Rotary Hammer Drill with QCC in Carry Case The Bosch GBH 2-28 F Professional rotary hammers are the most innovative in their class. A powerful 880 watt motor and 3.2 joules of impact energy allow for the fastest work rate in their class, for example when chiselling, be it in concrete, stone, steel or wood. The Bosch rotary hammers are versatile to use, and are also suitable for large diameters of up to 68 mm. Reliable Bosch quality ensures robust tools and a long lifetime. The GBH 2-28 F Professional Hammer Drills are the first rotary hammers in their performance category to be equipped with KickBack Control. This function gives you more control in the toughest drilling applications. If the power tool suddenly and unforeseeably rotates around the drilling axis – such as when the drill bit jams in reinforced concrete – the integrated sensor will shut down the motor within a fraction of a second. This prevents unexpected kick-back of the tool and can therefore reduce the risk of injury. What’s more, both rotary hammers are equipped with active vibration damping: A counter oscillator positioned in the gear housing permanently counteracts the air and mass forces from the hammer mechanism, therefore reducing the vibration levels to 11 m/s². As a result, working with these tools is kinder to your health, less tiring and also more precise. These \'F\' models comes with an additional quick-change keyless chuck for straight shank drill bits. FEATURES Top performance with intelligent KickBack Control Best performance in its class with improved power Increased user protection with KickBack Control (KBC) in order to minimise the risk of injury Active vibration damping with counter oscillator for minimal vibration levels Magnesium gear housing for improved robustness Ball grommet for preventing cable breaks Rotating brush plate for equal power in forward and reverse rotation Overload clutch to protect the user and the machine Forward/reverse rotation for dislodging jammed drill bits Continuously variable speed control for clean drilling starts Locking button for continuous and fatigue-free work Quick-change chuck for fast changes between drilling with impact in concrete and drilling without impact in wood and metal SPECIFICATION Rated power input: 880 W Max. impact energy: 3.2 J Impact rate at rated speed: 0 – 4,000 bpm Rated speed: 0 – 900 rpm Weight: 3.1 kg Length: 402 mm Height: 216 mm Bit holder: SDS-plus Drilling dia. in concrete with hammer drill bits: 4 – 28 mm Opt. app. range in concrete with hammer drill bits: 8 – 16 mm Drilling diameter in concrete with core cutters: 68 mm Max. drilling dia. in masonry with core cutters: 68 mm Max. drilling diameter in steel: 13 mm Max. drilling diameter in wood: 30 mm NOISE & VIBRATION Sound pressure level: 90 dB(A) Sound power level: 101 dB(A) Uncertainty K: 3 dB Available In 110v & 240v