Husqvarna DM 400 Core Drill Motor - 967910303
DM 400 is a powerful and sturdy electric core drill for medium to heavy core drilling where reliability and high productivity is needed. Recommended diameter 55-350 mm. With aluminum motor housing to withstand tough handling and a carrying handle for ergonomic usage and additional impact protection of the drill motor. Equipped with Embedded Connectivity, an enhanced version of Husqvarna Fleet Services™ for data analytics and insights into the health of the machine. Suitable for water evacuation, ventilation, angle drilling, stitch drilling and when you need to cut close to corners.
Features
- Drill motor is perfect for horizontal or vertical drilling, as well as angled drilling and stitch drilling (to make openings) in concrete
- Equipped with an aluminum housing and the protective carrying handle ensures rough handling
- Ergonomic carrying handle for easy transport and handling
- Optimized RPMs enables high drilling performance
- Embedded connectivity with Husqvarna Fleet Services™, which enables data analytics and insights into the health of the machine
- Quick, easy connection to a drill stand (sold separately)
- LED indicator shows the load of the machine, allowing the operator to always drill at maximum pressure
- 3 speed gearbox for optimal drilling performance and longer service intervals
- Gardena water hose connection
- Quick-release washer for easy dispatch of drill core bits
- Drill bits and stand sold separately
Specifications
| MPN |
967910303 |
| Voltage |
110-120 V |
| Rated Power |
4.29 hp |
Max Drill Bit Diameter
With Stand |
14" |
Minimum Drill Bit Diameter
(Recommended) |
2" |
| Arbor |
1-1/4"-7 Threaded |
| Water Connection |
G 1/4" |
| Dimensions |
23" x 5.5" x 7.3" |
| Weight |
34.2 lb |
What our Experts Think
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Reliable Medium–Heavy Core Drilling Power
Electric core drill motor delivering ~4.29 hp input with 3‑speed gearbox for efficient drilling of 55–350 mm (2–14 in) core holes in reinforced concrete, masonry, brick and similar materials.
-
Built Tough for Jobsite Durability
Sturdy aluminium motor housing and ergonomic carrying handle protect against impacts and make handling easier during transport and prolonged use.
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Smart Features with Embedded Connectivity
Integrated Husqvarna Fleet Services™ Embedded Connectivity provides machine health data and analytics — useful for fleet management and uptime optimisation.
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Performance‑Enhancing Ergonomics
LED load indicator helps maintain optimal drilling pressure, while SmartStart® reduces vibration at startup for smoother control.
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Versatile Drilling Capabilities
Designed for horizontal, vertical, angled, stitch drilling and water evacuation workflows, enhancing versatility across general construction and MEP applications.
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Pro‑Level Choice for Contractors & Rentals
Combines power, durability and smart features in a compact package that appeals to professionals — boosting search demand and relevance in core drilling equipment categories.
Q&A
Q: What is the Husqvarna DM 400 Core Drill Motor?
A: A professional electric core drill motor designed for medium to heavy‑duty concrete and masonry drilling, providing reliable hole‑making performance when paired with a core drill stand.
Q: What drilling sizes can it handle?
A: Supports recommended bit diameters ~55–350 mm (≈2–14 in) with a stand, making it suitable for service openings, ventilation holes, pipes and wall penetrations.
Q: What are its main power features?
A: ≈4.29 hp (≈3.2 kW) corded electric motor on 100–120 V, 1‑phase with a 3‑speed gearbox for optimized torque & speed across drilling tasks.
Q: What performance and durability features does it include?
A: Aluminium motor housing for rugged jobsite use, embedded connectivity (Husqvarna Fleet Services) for machine health insights, LED load indicator, and SmartStart for smoother hole starts.
Q: What drilling types is it suited for?
A: Effective for horizontal, vertical, angled and stitch drilling, including wet drilling with water evacuation, and close‑to‑corner cuts.
Q: Who is this core drill motor ideal for?
A: Contractors, core drilling pros, and rental fleets who need a durable, high‑productivity electric drill motor for demanding structural drilling.
Maintenance Tips
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Clean after every use – Wipe dust and concrete slurry from the housing and ventilation slots; use a dry or slightly damp cloth and never run water directly into motor openings.
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Inspect electrical components – Check the power cord, plug, switch and connections before operation; replace any worn or damaged parts to ensure safety and reliability.
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Tighten fasteners daily – Verify all housing bolts, handle mounts and accessory screws are secure to prevent vibration and misalignment during drilling.
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Lubricate drill bit threads – Apply water‑resistant grease to the spindle/bit threads for easier installation and removal of diamond bits.
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Monitor seals & water connections – Check water inlet seals for leakage; replace shaft seals promptly if there is water ingress to protect internal components.
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Service gear oil & carbon brushes – Have an authorized service center replace gearbox oil and inspect/replace carbon brushes at recommended intervals to extend motor life.
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Store dry & protected – Always disconnect power and store in a dry, cool location to reduce corrosion and prolong service life.
Damage 
Loss 
Theft 
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