HDS
HDS Belgium — Rumst, Belgium — Since Est.

Heavy Duty
Dredging
Systems

Manufacturer of submersible dredging pumps, excavator cutterheads, and complete hydraulic dredging systems — engineered for the most demanding jobsites worldwide.

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Dredging Pumps
5 Models.
One System.

From 62 KW entry-level to 120 KW high-head — every HDS pump shares the same mounting interface, seawater-grade shaft, and 27% chrome wear parts.

HDS 110
62 KW
83 HP
  • 6" or 8" discharge
  • Up to 400 m³/h
  • 26m head
  • 750 KG
View Specs →
HDS 125
78 KW
106 HP
  • 6" or 8" discharge
  • Up to 450 m³/h
  • 28m head
  • 760 KG
View Specs →
HDS 125L
78 KW
106 HP — High Flow
  • 8" only discharge
  • Up to 550 m³/h
  • 22m head
  • 830 KG
View Specs →
HDS 160M
120 KW
160 HP — High Head
  • 8" discharge
  • Up to 450 m³/h
  • 37m head
  • 770 KG
View Specs →
HDS 160
103 KW
140 HP — Max Flow
  • 10" discharge
  • Up to 780 m³/h
  • 22m head
  • 900 KG
View Specs →
Why HDS Belgium
Built Different.
By Design.
⚙️
27% Chrome Wear Parts
EN-GX260Cr27 impellers and wear plates hardened to 62 HRC — outperforming NI-Hard and EN-GJN-HV600 in abrasive conditions.
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Seawater-Grade Shaft
AISI T-431 / DIN 1-4057 tempered stainless shaft with Diamix sleeve and Nitrile + Teflon seals — superior to 39NiCrMo3 shaft for marine environments.
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Hydraulic Excavator Mountable
Field engineers cutting edge designs precision-manufactured casings and motor housings featuring dual-sided threaded mounting pads for secure integration with lifting frames, rotating shafts for ladder arms, and excavator cutter heads
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Field-Fast Maintenance
Extraction bolts for rapid dismantling. Oversized cast part thickness. Pumps can be dismantled without removing cutterheads. Record-time reassembly.
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Low Speed — Low Wear
Performance curves based on 1150–1200 RPM practical duty points for coarse sand up to 4mm — realistic expectations, not lab conditions.
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Complete System Supplier
Not just pumps — HDS supplies complete hydraulic dredging systems: pumps, cutterheads, power packs, and mounting hardware as a single integrated solution.
Excavator Cutterheads
Cut Through
Anything.

EXHYC cutterheads mount on all HDS pumps and most third-party submersible dredging pumps. Rated to SPT N-Value 55 — hard clay and compacted sand.

800
mm diameter
EXHYC 4200
  • Teeth: 9
  • Torque: 4200 Nm (3,100 lb-ft)
  • Min RPM: 50 RPM
  • Motor: 1116cc Radial Piston
  • Weight: 405 KG
  • Compact soil / Clay / Mixing: 50 / 75 / 100 RPM
1000
mm diameter
EXHYC 4500
  • Teeth: 18
  • Torque: 4500 Nm (3,319 lb-ft)
  • Min RPM: 40 RPM
  • Motor: 1116cc Radial Piston
  • Weight: 480 KG
  • Compact soil / Clay / Mixing: 40 / 60 / 80 RPM
1200
mm diameter — largest
EXHYC 4500-1200
  • Teeth: 21
  • Torque: 4500 Nm (3,319 lb-ft)
  • Min RPM: 35 RPM
  • Motor: 1116cc Radial Piston
  • Weight: 480 KG
  • Compact soil / Clay / Mixing: 40 / 60 / 80 RPM
Pump Design
Engineering
Details
01
27% Chrome Impeller & Wear Plates
EN-GX260Cr27 white cast iron, hardened to 62 HRC. Outperforms EN-GJN-HV600 (XCr18) for extended service life in abrasive slurry.
02
AISI T-431 Shaft + Diamix Sleeve
Tempered stainless DIN 1-4057 shaft with Diamix sleeve and both Nitrile and Teflon seals for seawater and abrasive environments.
03
3-Blade Agitator Close to Impeller
Bearings positioned close to the impeller minimize vibration. Three robust agitator blades deliver superior impact resistance.
04
Coarse Sand Up to 4mm Grain Size
Performance curves based on actual 4mm coarse sand duty points through PE-pipes up to 500m. Not theoretical clean-water ratings.
05
Oversized Cast Thickness
Casted parts in oversized thickness — unbreakable in the field. Dismantling and reassembly possible in record time with extraction bolts.
Pump Range — Quick Compare
Model
Power
Max Flow
Max Head
HDS 110
62 KW
400 m³/h
26 m
HDS 125
78 KW
450 m³/h
28 m
HDS 125L
78 KW
550 m³/h
22 m
HDS 160M
120 KW
450 m³/h
37 m
HDS 160
103 KW
780 m³/h
22 m
Where We Work
Global
Applications

From Philippines dam desilting to German gravel extraction, Belgium deep construction to Australian pump retrofits.

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Suction Dredger Upgrades
Mounting EXHYC cutterheads on existing suction dredgers with waterjetting. Clients: Quarzwerke GmbH, Kieswerk Sonnenberg, Hartema Leer, SC GHMC Romania.
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Excavator Dredging Units
Complete pump + cutterhead units on CAT 330, CAT 333, Hitachi 350LC, and Watermaster for canal cleaning, port maintenance, and mining.
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Dam & Reservoir Desilting
Hydro-electric power plant sediment removal in the Philippines: Kaliraya, Binga Dam, and Botocan hydro power plant.
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Port & Harbor Maintenance
Dredging and deepening of harbors, ports, and waterways using HDS pump and cutterhead systems mounted on excavators and pontoons.
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Deep Construction — 40m
HDS 125L with 3× EXHYC 4200 for tubular pile excavation at NEMO 33 (Uccle, Belgium) — the world's deepest indoor diving pool, 40m depth.
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Third-Party Pump Retrofits
EXHYC 4200 cutterheads mounted on WEIR Minerals pumps (Brisbane, Australia) and existing 300 HP submersible pumps worldwide.

Let's Discuss
Your Project

Tell us your jobsite conditions — material type, grain size, pumping distance, required flow — and we'll recommend the right HDS system.

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Hydraulic Dredging Systems HDS Belgium — Submersible Dredging Pump Manufacturer

HDS Belgium (Hydraulic Dredging Systems) is a Belgian manufacturer of heavy-duty submersible dredging pumps and hydraulic excavator cutterheads located in Rumst, Belgium. The company produces 5 pump models (HDS 110: 62 KW, HDS 125: 78 KW, HDS 125L: 78 KW high-flow, HDS 160M: 120 KW high-head, HDS 160: 103 KW 10-inch) and 3 cutterhead models (EXHYC 4200: 800mm, EXHYC 4500: 1000mm, EXHYC 4500-1200: 1200mm). All pumps feature 27% chromium wear parts (EN-GX260Cr27) at 62 HR

HDS Belgium Dredging Pumps — Product Overview

HDS Belgium manufactures a full range of submersible hydraulic dredging pumps for industrial and commercial dredging operations. Our pumps are designed for high solids content and severe abrasion, making them suitable for the most challenging dredging environments.

Our product range includes:
- Submersible hydraulic dredging pumps (multiple flow rates and discharge sizes)
- Excavator-mounted cutterhead dredging systems
- Complete turnkey dredging installations
- Spare parts and wear components

All HDS Belgium dredging pumps are manufactured to the highest quality standards and are available in custom configurations to match your specific project requirements. Contact us for technical specifications, flow rate calculations, and pricing.