Bosch GBH 11 DE SDS Max 11kg Combi-Hammer This heavy duty SDS max combi hammer drill with powerful universal hammer for rapid drilling and chiselling has been built with heavy duty jobs in mind. With best drilling performance thanks to optimised hammer mechanism technology and high-performance motor. Low-vibration impact mechanism for reduced fatigue. Long lifetime due to use of high-quality materials and components made of fibreglass reinforced plastic, aluminium and precision parts made of steel. FEATURES Overload clutch Cut-off carbon brushes Variable auxiliary handle Good handling, also for left handers Optimised dust seal in toolholder as well as new ventilation grilles ensure long operational life SDS-max toolholder for safe and fast locking; compact transfer of torque; with integrated dust protection Constant Electronic with setting wheel for preselecting speed, impact rate or impact force Variable chisel fitting in 12 angle positions Service display indicates in good time that a carbon replacement is due SPECIFICATION Rated power input: 1.500 W Impact energy: 5 – 18 J Power output: 920 W Impact energy (chiselling): 5 – 18 J Impact rate at rated speed: 1.100 – 2.250 rpm Rated speed: 120 – 250 rpm Rated torque: 200 Nm Weight: 11.1 kg Length: 595 mm Height: 280 mm Drilling diameter in concrete with SDS-max flute drill bits: 12 – 52 mm Drilling diameter in concrete with SDS-max core cutters: 40 – 150 mm Drilling diameter in concrete with SDS-max breakthrough drill bits: 45 – 80 mm Recommended drilling range: 30 – 52 mm Material removal rate in concrete of medium hardness, approx.: 225 kg/h NOISE & VIBRATION Hammer drilling in concrete  Vibration emission value ah: 24 m/s² Uncertainty K: 1.5 m/s² Chiselling  Vibration emission value ah: 15 m/s² Uncertainty K 1.5 m/s²