Husqvarna DM 406 H Hydraulic Core Drill Motor - 965158207

Husqvarna DM 406 H Hydraulic Core Drill Motor - 965158207

DM 406 H is our powerful hydraulic core drill for drilling holes up to 24 in. diameter. An excellent choice for heavy-duty core drilling applications where high production rates are needed, especially with large diameter core bits. The hydraulic speed can be changed while drilling, making the DM 406 H efficient and very easy to use.

Features

• Drill reinforced concrete, bricks and other building materials
• Suitable for large and deep holes, waste evacuation pipes and stitch drilling in a variety of materials
• Can be used with either PP 518 Gas or the PP 325 Electric as a power source - sold separately
• Speed regulation during drilling
• Six different spindle speeds for optimum drilling performance.
• Fits on the DS 900 core drill stand
• Optimal speed a wide RPM range of with six-speed gearbox
• Drill bits, stand and PRIME power pack sold separately

Specifications

What our Experts Think

• Powerful Hydraulic Torque for Deep Core Drilling
  Delivers strong hydraulic output with up to 24 in (650 mm) core diameter capacity, making it an excellent choice for heavy‑duty holes in reinforced concrete, utility channels or waste pipes.

• Flexible Speed Control Mid‑Drill
  Six‑speed hydraulic gearbox lets operators adjust RPM while drilling, giving smoother starts, better penetration and adaptability across materials and bit sizes.

• Compact Yet Robust Design
  Lightweight at around 16–17 kg, it’s portable and easy to position on stands or power packs without sacrificing industrial‑grade performance.

• Wide RPM Range for Efficiency
  From low speeds for large diameters to high RPM for smaller bits, the broad speed range helps optimise drilling rates and prolong bit life.

• Wet Drilling Compatibility
  Integrated water connection supports wet drilling, reducing dust and improving bit cooling for cleaner, safer jobsites.

• Pro‑Focused Reliability & Versatility
  Professionals value the DM 406 H for consistent performance across structural drilling tasks, boosting SEO visibility and merchant ranking for concrete coring equipment.

Q&A

Q: What is the Husqvarna DM 406 H Hydraulic Core Drill Motor?
A: A professional hydraulic core drill motor designed for heavy‑duty core drilling, enabling fast, large‑diameter hole drilling in reinforced concrete, masonry and similar tough materials when paired with a core drill stand and hydraulic power pack.

Q: What are its key capabilities?
A: It supports holes up to ~650 mm (25.6 in) diameter with six adjustable spindle speeds for optimal drilling performance at different bit sizes.

Q: What power source does it use?
A: Powered hydraulically, requiring a compatible hydraulic power pack (gas or electric) to deliver flow and pressure for peak performance.

Q: What drilling range and speeds does it offer?
A: With a wide RPM range, it’s suited for small bits (≈25–152 mm / 1–6″) at higher speeds and large bits (≈152–610 mm / 6–24″) at lower speeds, all adjustable during drilling.

Q: How easy is it to use on site?
A: Its hydraulic speed regulation allows operators to adjust speed under load, improving control and efficiency as conditions change.

Q: Who should choose the DM 406 H?
A: Contractors, rental fleets and professional drill operators needing a robust core drill motor for deep, large‑diameter holes in tough construction materials.

Maintenance Tips

• Regular cleaning – Wipe down the drill motor and connections after use to remove concrete dust and debris; avoid high‑pressure washing.

• Inspect hydraulic hoses & couplings – Check hoses, connectors and pins daily for leaks or wear; clean and tighten to maintain efficient hydraulic flow.

• Check fasteners daily – Ensure nuts, bolts and mounting points are secure before operation to prevent vibration and misalignment.

• Change gearbox oil on schedule – Replace gearbox oil every 100 hours or annually with recommended Husqvarna Oil 220 to protect internal gears.

• Monitor seals & bearings – Look for signs of leakage or rough rotation; service worn parts promptly to extend motor life.

• Proper storage – Store the motor in a dry, clean area; disconnect hydraulic supply and shield from moisture when not in use.