Makita DHR400 SDS Max Twin 18v LXT Cordless Rotary Demolition Hammer Drill

With the DHR400ZKU, Makita has launched its first ever cordless SDS Max Rotary Demolition Hammer, featuring all the power and performance of a mains machine whilst benefitting from the freedom and manoeuvrability that a battery-operated tool has to offer. In order to power the motor required to run such a tool efficiently, the DHR400 uses two standard 18v LXT batteries, meaning users on the LXT platform can integrate this machine into their existing setups without having to invest in new batteries and chargers.

As with the popular HR4013C mains machine, the new Makita DHR400ZKU Twin 18v SDS-MAX Rotary Demolition Hammer will punch a 40mm hole into concrete, will run up to 500rpm and will generate up to 2,900 blows per minute with 8.0 Joules of impact energy.

Makita’s AVT – Anti-Vibration Technology – is featured in this model which gives the hammer drilling vibration rating – when hammer drilling into concrete - of just 5.0m/s². This rugged 2-mode machine – rotary drilling with hammer action and hammer action-only for chiselling - has an easy-to-operate mode change switch positioned conveniently on top of the motor body ahead of the vibration-reducing rear grip handle. With variable speed controlled by the grip trigger, and a constant speed control that can be set for constant running when chiselling, the DHR400ZKU can also be used with the trigger controlling chiselling for intermittent work. A further position of the mode control allows the bit angle to be set as required.

The DHR400ZKU also benefits from Makita Auto-Start Wireless System (AWS) functionality which allows the tool to automatically connect to compatible Makita dust extractors. Each machine has a unique chip that allows the user to pair it up with the selected dust extractor. Once paired, the dust extractor will automatically start once the trigger on the hammer is pulled.

This machine also has a Soft Start feature which smoothly accelerates the motor into action even if the trigger is pulled fully home from off. In drilling mode this reduces the sudden torque load on start up. When operating, the torque limiter connected to the side handle will cut the motor drive should the drill bit snag, thus providing further operator protection. The soft no load function automatically cuts the motor speed during idling to reduce vibration exposure. An electric brake and LED worklight round off the features of this powerful and innovative tool.

Features and Benefits
• Auto-Start Wireless System (AWS)
• Connects to compatible Bluetooth dust extractors
• Paired dust extractor will automatically run while the switch is on
• Brushless motor for increased runtime
• Variable speed
• Electric brake
• Soft start
• Constant speed control
• Torque limiter
• LED job light
• Soft No Load feature automatically reduces motor speed & vibration during idling
• 2 mode operation: Rotation with hammering / Hammering only

Specifications
• Battery Voltage: 36v (2x 18v)
• Battery Type: Makita LXT Lithium Ion
• Max in concrete (TCT bit): 40 mm
• Max in concrete (TCT core): 105 mm
• Impact energy: 8.0 J
• Shank: SDS-MAX
• Blows per minute: 1450 - 2900 bpm
• Noise sound pressure: 91 dB(A)
• Noise sound power: 102 dB(A)
• Noise K factor: 3 dB(A)
• No Load Speed: 250 - 500 rpm
• Vibration K factor: 1.5 m/sec²
• Vibration (Hammer Drilling): 5.0 m/sec²
• Vibration (Chiselling): 4.5 m/sec²
• Net weight: 7.3 - 8.1 kg