Rotary hammer DeWalt DCH735N-XJ, cordless SDS‑max, 54V (body only), weight 8.5 kg, width 115 mm, height 284 mm

DeWalt DCH735N-XJ is a cordless SDS‑max rotary hammer designed for heavy chiselling and drilling in concrete and masonry. Supplied as body only for use with the DeWalt 54V FlexVolt battery system, the tool delivers professional impact energy and mobility without the need for mains power. The tool measures 115 mm in width, 284 mm in height and weighs 8.5 kg, providing a balance of power and manageable size for site work. Integrated features include an anti-rotation system that cuts power instantly on loss of control and an active vibration control system to reduce user fatigue during prolonged use.

Advantages

The brushless motor increases runtime and reduces maintenance compared with brushed alternatives, while electronic speed and impact energy control enable precise adjustment for different materials and tasks. Active vibration control with a floating handle produces very low vibration levels (9.6 m/s² when drilling in concrete and 9.0 m/s² in chiselling mode), improving operator comfort and safety. A rotation-stop function allows safe demolition and light chasing work without engaging the rotary action. Wireless Tool Control compatibility permits automatic activation and shutdown when paired with supported devices such as a dust extractor.

Suitable for

• Drilling anchor fixings and through-holes in concrete and masonry up to 48 mm diameter
• Core drilling up to 125 mm (with appropriate accessories)
• Heavy chiselling and demolition with rotation-stop enabled
• Site work where cordless mobility and high impact energy are required
• Applications requiring reduced vibration and enhanced operator comfort

Key specifications

• Tool type: Cordless rotary hammer, SDS‑max
• Power system: 54V FlexVolt (battery sold separately)
• Weight: 8.5 kg
• Width: 115 mm
• Height: 284 mm
• Vibration (drilling in concrete): 9.6 m/s²
• Vibration (chiselling): 9.0 m/s²
• Rotation-stop for demolition applications
• Brushless motor with electronic speed and impact energy control
• Wireless Tool Control compatibility for automatic activation/shutdown
• Anti-rotation safety system
• Recommended drilling capacity in concrete: up to 48 mm (through holes); core drilling up to 125 mm

How to use

Fit a compatible SDS‑max bit and ensure a charged 54V FlexVolt battery is installed according to the battery and tool manufacturer instructions. Select the required mode (drilling, hammer drilling or rotation-stop for chiselling/demolition) and adjust speed and impact energy to suit the material. When drilling, use steady feed pressure and allow the tool to do the work; for larger cores or deep holes, withdraw periodically to clear debris. If the tool senses loss of control, the anti-rotation system will cut power—maintain a secure grip and follow safety procedures. For wireless activation with a dust extractor or other Wireless Tool Control device, pair devices following the Wireless Tool Control instructions.

Usage recommendations

Use appropriate personal protective equipment (eye, ear and dust protection) and follow site safety rules. For extended work in concrete or masonry, choose appropriate drill bits and core accessories, monitor battery charge for consistent performance, and take regular breaks to reduce fatigue. Maintain the tool by keeping ventilation ports clear and following DeWalt service intervals where available.