Rotary Hammer Makita DHR243RTJ — 18V Li‑Ion, 5Ah, SDS, 2 J impact, 2.4 cm concrete drilling

The Makita DHR243RTJ rotary hammer is a compact cordless tool designed for drilling and light chiselling in concrete and masonry. Equipped with an 18 V Lithium-Ion power system and a high-speed motor rated at 9,500 RPM, this rotary hammer delivers up to 2 J of impact energy and can drill holes up to 24 mm diameter in concrete. Weighing approximately 3.7 kg and finished in Makita's blue and black colours, the tool balances portability with robust performance. Built-in overload protection helps prevent motor damage and enhances user safety during demanding tasks.

Advantages

The tool's 9,500 RPM motor combined with 2 J impact energy enables efficient drilling in reinforced concrete and masonry while remaining light enough for overhead or extended use. Battery-powered operation removes the need for a power cord, increasing mobility on-site and in confined spaces. A weight of around 3.7 kg reduces operator fatigue compared with heavier corded units, and integrated overload protection contributes to longer tool life and safer operation.

Suitable for

• Drilling anchor and fixing holes in concrete and brick
• Light chiselling and demolition work on masonry
• Portable drilling where mains power is not available
• Construction, renovation and installation tasks that require mobility

Key specifications

• Rated motor speed: 9,500 RPM
• Maximum impact energy: 2 J
• Maximum concrete drilling capacity: 24 mm
• Power source: 18 V Lithium-Ion battery
• Weight: approximately 3.7 kg
• Colour: blue and black
• Overload protection: integrated electronic protection

How to use

Select the appropriate drill bit or chisel for the material and task, secure it in the tool's chuck according to the manufacturer's instructions, and attach a charged 18 V Lithium-Ion battery. Position the tool perpendicular to the work surface, set the desired mode (drilling or chiselling), and apply steady pressure while starting at low speed until the hole is established. For sustained drilling or chiselling, allow the tool to work with moderate force and avoid excessive side load on the bit. Observe all safety precautions including eye and hearing protection and ensure the work area is clear of bystanders.

Usage recommendations

Use batteries recommended by the tool manufacturer and keep them charged and stored according to battery care guidelines. For best results in concrete, use carbide-tipped masonry bits and allow periodic pauses during prolonged use to prevent overheating. Regularly inspect the tool for wear, clean ventilation slots, and follow service intervals specified by Makita to maintain performance and safety.