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54v BODY ONLY DCH911NK FLEXVOLT SDS-MAX Breaker gives the professional trade a superb SDS-MAX Breaker with an outstanding 27jls of impact energy plus 12 chisel positions and an electronic 2 stage speed and impact energy selector for total operator control. The FLEXVOLT DCH911NK is fitted with a tough SDS-MAX Toolholder allowing the trade to tackle multiple jobs using a wide selection of SDS-MAX accessories also available on our website.

The DeWALT floating mechanism reduces chiselling vibration levels down to around 6m/s2 allowing for longer periods of work from such a large cordless breaker. Using the DWH051 Dust Extraction Adapter (not supplied with this machine) the Wireless Tool Control Transmitter allows the machine to be paired with a Wireless Tool Control Dust Extractor, for automatic activation and shut down.


  • 54v BODY ONLY FLEXVOLT SDS-MAX Demolition Hammer Drill
  • Brushless motor technology
  • No load speed 1350rpm to 1620rpm
  • 27jls impact energy (using a 54v x 9Ah FLEXVOLT Battery, not supplied)
  • 12 chisel positions ideal for flat chisel work
  • 2-stage electronic speed and impact energy selector
  • Tough SDS-MAX toolholder
  • LED service light
  • Low vibration level around 6m/s2
  • Fully compatible with the DeWALT DWH051 dust extraction adapter
  • Wireless Tool Control Transmitter allows pairing with Wireless Tool Control Dust Extractor for automatic activation and shut-down
  • Weight 12.5kgs excluding battery
  • Can be powered using all 54v XR FLEXVOLT Batteries in the range
  • All FLEXVOLT Power Tools from Power Tools UK come with full industrial warranty
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The DeWALT 36 month warranty guarantee is an extension to the standard 12 month warranty automatically covered by Power Tools UK, offering security in case of manufacturing and material defects to DeWALT Power Tools. Registration must be within 28 days of purchase in order that you can take advantage of this FOC warranty extension offered by DeWALT Power Tools


How does it work:-

  1. Log into MyDeWALT at and create an account if you do not already have one
  2. Register the machine by entering the product model number and select an option from the drop-down listing. Unfortunately for kits each individual item must be registered separately 

  3. Enter the date code (engraved inside the battery holder or on the underside of the machine) followed by the serial number shown on the machine rating label. Finally enter your SKU reference, purchase location plus the date of purchase and click confirm 

  4. A summery page will appear showing that the machine has been successfully registered through the DeWALT Warranty Website. The confirmed availability of the extended warranty against the specific machine will be indicated in green allowing you to download the Warranty Certificate

  5. In the event of a machine failure during the extended warranty period contact DeWALT directly for guidance and assistance, you will be required to supply details from your Warranty Registration Certificate which you can recover through your original DeWALT account