BOSCH GSB 21-2 RCT Professional Impact Drill

The Bosch GSB 21-2 RCT Professional impact drill is a corded drill for conventional drilling, hammer drilling, screwdriving and mixing. It is not a demolition hammer and has no chiselling mode, so it is unsuitable for breaking concrete. The motor draws 1,300 W and delivers up to 695 W of output power. Maximum drilling capacities are 22 mm in concrete, 16 mm in steel and 40 mm in wood. Its 1.5–13 mm keyless Auto-Lock chuck allows accessory changes without a chuck key. The AC corded power source requires access to a mains outlet.

A metal gearbox is used for the transmission housing, and mechanical kickback protection helps maintain control if an accessory binds. An auxiliary handle provides an additional holding point during higher-load work. Soft-grip surfaces improve contact with both hands. Adjustable speed control and constant-electronic technology help regulate working speed under changing loads. Torque preselection supports more controlled drilling and screwdriving. A carrying case is supplied; no chisel is included.

• 2.9 kg weight gives a clear indication of the drill’s handling load
• 51,000 bpm maximum impact rate for hammer drilling in masonry and concrete
• 3,000 RPM maximum rated speed for drilling applications
• 14.6 m/s² concrete-drilling vibration and 5.6 m/s² metal-drilling vibration
• 106 dB sound power and 95 dB sound pressure, with 5 dB uncertainty