Bosch GBH 2-20D Hammer Drill

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Top performance in the compact class 

  • High drilling rate and 30% higher chiseling performance than other rotary hammers in the entry-level class 
  • Robust stacked construction for a long lifetime 
  • Overload clutch to protect the user and the machine 
  • Continuously variable speed control for clean drilling starts 
  • Lightweight and compact, ideal for working overhead 
  • Versatile range of applications due to chisel function 
  • Forward/reverse rotation for dislodging jammed drill bits 
  • Impact stop for drilling in wood and steel 
  • Right-hand/left-hand rotation 
  • Electronic 
  • Overload clutch 

Rated power input 

650 W 

Max. impact energy 

1,7 J 

Impact rate at rated speed 

0 – 4.200 bpm 

Rated speed 

0 – 1.300 rpm 

Weight 

2,3 kg 

Bit holder 

SDS-plus 

drilling range 

  

Drilling diameter in concrete with hammer drill bits 

4 – 20 mm 

Optimum range of applications in concrete with hammer drill bits 

4 – 10 mm 

Drilling diameter in concrete with core cutters 

68 mm 

Max. drilling diameter in masonry with core cutters 

68 mm 

Max. drilling diameter in steel 

13 mm 

Max. drilling diameter in wood 

30 mm 

 
 

Noise/vibration information 

Measured values determined according to EN 60745. Total vibration values (vector sum of three directions) 

Chiseling 

  

Vibration emission value ah 

9.5 m/s² 

Uncertainty K 

1.5 m/s² 

Hammer drilling in concrete 

  

Vibration emission value ah 

13.5 m/s² 

Uncertainty K 

1.5 m/s²