Perforator Bosch GBH 2-21 Professional

The Bosch GBH 2-21 Professional is a compact SDS Plus perforator designed for efficient hammer drilling and light chiselling in masonry and concrete. Powered by a 720 W motor, it combines a moderate impact energy with a high impact rate to deliver steady progress when drilling into hard materials. With a maximum concrete drilling diameter of 21 mm and an overall weight of approximately 2.3 kg, this tool balances performance and manoeuvrability for workshop and on-site tasks.

Advantages

The tool offers a combination of relatively low weight and stable drilling performance, making it easier to control during overhead or extended work. The SDS Plus chuck system provides quick and secure bit changes, while the 2 J impact energy and up to 4,800 impacts per minute ensure effective material removal in concrete and masonry. Its compact design and balanced weight distribution contribute to reduced operator fatigue and improved precision for repetitive drilling tasks.

Suitable for

• Drilling holes for anchors and dowels in concrete and masonry
• Installing electrical boxes and plumbing fixtures in walls
• Light chiselling and removing small areas of masonry
• General renovation and repair tasks requiring frequent drill changes

Key specifications

• Motor power: 720 W
• Maximum drilling diameter in concrete: 21 mm
• Impact energy: 2 J
• Impact rate: up to 4,800 bpm
• Chuck system: SDS Plus
• Weight: 2.3 kg (approx.)
• Colour: red, blue and black

How to use

Secure the appropriate SDS Plus bit for the required hole diameter and insert it into the chuck until it locks. Select the hammer drilling mode on the tool and hold the perforator with both hands while positioning the bit on the marked drilling point. Start the motor at a moderate speed to establish the hole, then increase pressure as needed while maintaining steady alignment. For chiselling, switch to the relevant mode (if available) and use controlled passes to remove material. After use, unplug the tool and clean dust from the ventilation slots and chuck before storing.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses, hearing protection and dust mask when drilling into concrete or masonry. For best results in reinforced concrete, use suited carbide SDS Plus bits and avoid excessive side pressure to prevent premature wear of the tool. Regularly inspect and replace worn bits, and follow the manufacturer's instructions for maintenance intervals.