Husqvarna DM 400 Core Drill Motor - 967910303

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

What our Experts Think

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

• 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.

• Inspect electrical components – Check the power cord, plug, switch and connections before operation; replace any worn or damaged parts to ensure safety and reliability.

• Tighten fasteners daily – Verify all housing bolts, handle mounts and accessory screws are secure to prevent vibration and misalignment during drilling.

• Lubricate drill bit threads – Apply water‑resistant grease to the spindle/bit threads for easier installation and removal of diamond bits.

• Monitor seals & water connections – Check water inlet seals for leakage; replace shaft seals promptly if there is water ingress to protect internal components.

• 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.

• Store dry & protected – Always disconnect power and store in a dry, cool location to reduce corrosion and prolong service life.