MAKITA DHR400ZKU
Twin 18v 2 function hammer - SDS max
- Body only - No battery or charger
- Variable / reversing
- Impact energy: 8J
- Torque limiter
- AWS compatible
- Carry case
Was £599
- Body only - No battery or charger
- Variable / reversing
- Impact energy: 8J
- Torque limiter
- AWS compatible
- Carry case
- Body only - No battery or charger
- Variable / reversing
- Impact energy: 8J
- Torque limiter
- AWS compatible
- Carry case
The Makita DHR400ZKU is a 40mm class SDS-Max rotary hammer designed for serious demolition and heavy-duty drilling in concrete and stone. Powered by two 18V LXT batteries (36V total), it features a brushless motor, AVT vibration reduction, and an integrated AWS (Auto-Start Wireless System) for Bluetooth vacuum connection. Supplied body only with dust extraction attachment and Makpac case.
Key Features:
• SDS-Max rotary hammer with 2-mode operation: hammer drilling and chiselling
• Brushless motor for efficient performance and lower maintenance
• AVT for significantly reduced vibration
• Compatible with AWS – connects wirelessly to Bluetooth dust extractors
• Supplied with DX09 dust extraction unit, side handle, and Makpac case
• Body only – no batteries or charger included
Technical Specifications:
• Voltage: 36V (2 x 18V LXT)
• Impact Energy: 8.0 J
• No-Load Speed: 250–500 rpm
• Impact Rate: 1,450–2,900 bpm
• Max Drilling Capacity:
Concrete (TCT bit): 40 mm
Core Bit: 105 mm
• Tool Holder: SDS-Max
• Dimensions: 473 x 120 x 285 mm
• Weight (without batteries): 6.6 kg
If you require a lighter SDS-Plus model for general masonry use, the Makita DHR281ZJ offers excellent power and control in a more compact format.
An introduction to hammers: Hammers combine a pulsing pressure action, or 'hammer blow', with the rotating of a bit to break through denser materials. The SDS system was originally invented in 1975 by Bosch and translates as 'insert, twist, fits'. The slots on SDS bits enable the back-and-forth hammer blow action whilst still rotating. The drill bit is locked but at the same time can rotate. This system transfers the energy that the hammer builds up internally through to the tip of the drill bit without damaging the chuck. Click here to see all our hammers & breakers
To choose between hammers: There are two considerations when choosing between hammers. Firstly; whether you require the two standard functions of a rotary action (ie drilling) & a rotary hammer action or the 3 functions of drilling, rotary hammer action & hammer only action. Secondly, whether you require the smaller SDS plus shank size drill bit or the larger SDS max shank size. These tools are SDS max which refers to a larger shank size drill bit compared to SDS plus. They have a lever that selects between 3 functions of drill, rotary hammer & hammer only action. Click here to see all our hammers
To make sure you've got the right 2 function hammer - sds max: Click here to see all our 2 function hammer - sds max

DHR400 is a 40 mm (1-9/16) cordless rotary hammer powered by two 18V Li-Ion batteries.
- Auto-Start Wireless System (AWS) - connects to compatible dust extractors with Bluetooth. The dust extractor automatically runs while the switch is on.
- Brushless motor
- Variable speed
- Electric brake
- Soft start
- Constant speed control
- Torque limiter
- LED job light
- "Soft no load" function automatically reduces the motor speed during idling to suppress the vibration of the machine body.
- 2-mode operation: Rotation with hammering / Hammering only
- Voltage: 36 (18V x2) v
- Battery Type: Lithium-ion
- Body only machine: 1
- Max in concrete (TCT core): 105 mm
- Net weight: 7.3 - 8.1 kg
- Vibration: Chiselling: 4.5 m/sec²
- Blows per minute: 1450#-#2900 bpm
- Max in concrete (TCT bit): 40 mm
- Noise sound power: 102 dB(A)
- Vibration: Hammer Drilling: 5 m/sec²
- Shank: SDS-MAX
- No Load Speed: 250 - 500 rpm
- Impact energy: 8 J
- Vibration K factor: 1.5 m/sec²
- Noise sound pressure: 91 dB(A)
- Noise K factor: 3 dB(A)

- 1 year warranty can be extended to 3 years by registering the tool online within 30 days of purchase, subject to the following conditions:
- the tool is CE marked and was purchased on or after 1st July 2012
- the tool is not an Air Compressor/ Air Tool, a Battery/ Charger, an Accessory, or a Petrol or Production Tool - To register your tool for extended warranty click here
- Warranty claims: Please request a collection from Makita using their returns form. Alternatively, you can speed the process up by taking the tool to your nearest approved Makita Area Service Agent. You can find your nearest agent here. When searching for your nearest agent on the website you will need to select the 'Service - Electric' tick box for a power tool warranty claim, or the 'Service - Garden Machinery' tick box for a garden tool warranty claim. Please contact Howe Tools should you need any assistance.
- You can order until 8pm for free next working day delivery to nearly all of England and Wales. For locations further from our hub, our cut off is 5pm. Some harder-to-reach locations may take an extra day. More info »
- For most orders we use a premium carrier that notifies you of a one hour timed delivery slot and sends text updates.
- If you change your mind within 30 days of buying a tool, not a problem (assuming the tool has not been used and is in its original packaging) - call us on 0333 004 3000 or email us at [email protected] and we’ll contact you to arrange collection. Once the tool is received back, we will refund the cost of the tool less a £6 collection charge.
- If the tool is faulty within 30 days of buying it, we will arrange for its collection at no cost to you and supply a replacement.
- If the tool is faulty after 30 days of buying it, and before the expiry of the manufacturer’s warranty, we will guide you through the manufacturer’s warranty process.
- Recently Viewed
-