Achievable Bosch quality with battery comfort and brushless power. The GBH 18V-21 Professional cordless rotary hammer offers consistent performance with 2.0 J impact energy and a brushless motor. The tool's highly efficient brushless motor reduces the need for maintenance and improves runtime per battery charge, resulting in less downtime and increased lifespan. It features three modes of operation for hammer drilling, drilling, and chiseling to ensure great versatility.

Equipment and application

• Consistent performance for drilling many holes and 20% longer battery runtime than the previous model.
• Fully compatible with the GDE 16 plus dust attachment.
• Compatible with the Bosch Professional 18V System and the AMPShare multi-brand battery alliance.

Additional information

• The GBH 18V-21 Professional comes with an LED light, rotation control clutch, variable speed, and Vario Lock.
• Powerful impact system with 2.0 J and three functions (drilling, hammer drilling, chiseling) ensure versatile use.
• Brushless motor reduces the need for maintenance and improves runtime per battery charge, less downtime, and increased lifespan.
• Good power-to-weight ratio with a weight of only 2.4 kg, even capable enough for light chiseling tasks.

Technical specifications

• Impact energy (according to EPTA 05/2016 guideline)*: 2 J
• Number of impacts at nominal speed*: 0 – 5,100 min-1
• Nominal speed*: 0 – 1,800 min-1
• Battery voltage: 18.0 V
• Weight without battery: 2.4 kg
• Tool holder: SDS plus
• Package dimensions (width x length x height): 370 x 450 x 150 mm

Drilling range

• Drilling diameter in concrete with hammer drill bits: 4 – 21 mm
• Ideal usage range in concrete with hammer drill bits: 6 – 10 mm
• Max. drilling diameter in metal: 13 mm
• Max. drilling diameter in wood: 30 mm

Total vibration values (Hammer drilling in concrete)

• Vibration emission value ah: 15.5 m/s²
• Uncertainty K: 1.5 m/s²

Total vibration values (Chiseling in concrete)

• Vibration emission value ah: 12.7 m/s²
• Uncertainty K: 1.5 m/s²

Noise/vibration information

• Sound pressure level: 90 dB(A)
• Sound power level: 101 dB(A)
• Uncertainty K: 3 dB

* Deviation depends on usage.