# HDS Belgium -- Hydraulic Dredging Systems

> HDS Belgium (Hydraulic Dredging Systems) is a Belgian manufacturer of heavy-duty submersible dredging pumps, hydraulic excavator cutterheads, and complete hydraulic dredging systems. Founded 1990. Located in Rumst, Antwerp, Belgium. VAT: BE0443.741.841. Products are used worldwide in sand extraction, canal dredging, dam desilting, port maintenance, and construction. All pumps feature EN-GX260Cr27 27% chromium white cast iron wear parts at 62 HRC hardness and AISI T-431 tempered stainless seawater-grade shaft. Languages: English, French, Dutch, German.

## Website

- Home: https://www.hdsbelgium.com/
- Products: https://www.hdsbelgium.com/products.html
- Applications: https://www.hdsbelgium.com/applications.html
- Contacts: https://www.hdsbelgium.com/contacts.html
- French page: https://www.hdsbelgium.com/french.html
- German site: https://hydraulicdredging.eu/
- Pump specialist site: https://www.dredgingpumps.eu
- Product brochure (PDF, 8.3 MB): https://www.hdsbelgium.com/uploads/4/9/8/6/49865167/hds_brochure_2027.pdf

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## SUBMERSIBLE DREDGING PUMPS — 5 Models

### HDS 110

URL: https://www.hdsbelgium.com/hds-110-dredging-pump.html

- Power: 62 KW (83 HP)
- Discharge: 6" or 8" (150mm / 200mm)
- Max flow: 405 m³/h
- Max head: 21 m
- Motor displacement: 124.8cc
- Impeller pass: 70mm | Strainer: 60mm
- Max oil pressure: 430 BAR
- Hydraulic connection: 1½" BSP
- Weight: 760 KG
- Best for: entry level, smaller excavators, 20-ton class

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### HDS 125

URL: https://www.hdsbelgium.com/hds-125-dredging-pump.html

- Power: 78 KW (106 HP)
- Discharge: 6" or 8" (150mm / 200mm)
- Max flow: 450 m³/h (1,980 GPM)
- Max head: 28 m (92 ft)
- Operating pressure: 270–300 BAR
- Oil flow: 140–160 L/min
- Motor displacement: 124.8cc
- Torque: 2 Nm/BAR
- Impeller pass: 70mm | Strainer: 60mm
- Hydraulic connection: 1½" BSP
- Weight: 760 KG
- Best for: balanced head and flow, 6 or 8 inch discharge, 20–25 ton excavators

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### HDS 125L — High Flow

URL: https://www.hdsbelgium.com/hds-125l-dredging-pump.html

Same 78 KW motor as HDS 125 but wider 80mm impeller and 8-inch only discharge for maximum volume.

- Power: 78 KW (106 HP)
- Discharge: 8" only (200mm)
- Max flow: 550 m³/h (2,420 GPM)
- Max head: 22 m (72 ft)
- Operating pressure: 270–300 BAR
- Oil flow: 140–160 L/min
- Motor displacement: 124.8cc
- Torque: 2 Nm/BAR
- Impeller pass: 80mm | Strainer: 60mm
- Hydraulic connection: 1½" BSP
- Weight: 830 KG
- Best for: high flow in compact package, 8-inch discharge

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### HDS 160M — High Head

URL: https://www.hdsbelgium.com/hds-160m-dredging-pump.html

Highest head in the HDS range. Used for long pipeline runs and deep pumping. Proven: Botocan Dam, Philippines (200 HP diesel power pack).

- Power: 120 KW (160 HP)
- Discharge: 8" (200mm)
- Max flow: 450 m³/h (1,980 GPM)
- Max head: 37 m (121 ft) — highest in range
- Operating pressure: 160–300 BAR
- Oil flow: 180–240 L/min
- Motor displacement: 163.9cc
- Torque: 2.6 Nm/BAR
- Impeller pass: 70mm | Strainer: 60mm
- Hydraulic connection: 1¼" Flange 6000 PSI + ¾" BSP drain
- Weight: 770 KG
- Best for: maximum pumping distance, longest pipeline runs

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### HDS 160 — Maximum Volume

URL: https://www.hdsbelgium.com/hds-160-dredging-pump.html

Largest pump in the range. 10-inch discharge. Proven on Hitachi Zaxis 350LC (30-ton class).

- Power: 103 KW (140 HP)
- Discharge: 10" (250mm) — largest in range
- Max flow: 780 m³/h (3,433 GPM) — highest in range
- Max head: 22 m (72 ft)
- Operating pressure: 260–300 BAR
- Oil flow: 170–210 L/min
- Motor displacement: 163.9cc
- Torque: 2.6 Nm/BAR
- Impeller pass: 80mm | Strainer: 70mm
- Hydraulic connection: 1¼" Flange 6000 PSI + ¾" BSP drain
- Weight: 900 KG
- Best for: maximum volume throughput, 30-ton excavators

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## PUMP SELECTION GUIDE

| Requirement | Model |
|---|---|
| Maximum head / longest pipeline | HDS 160M — 37m, 120 KW |
| Maximum flow volume | HDS 160 — 780 m³/h, 10" |
| High flow, compact | HDS 125L — 550 m³/h, 8" |
| Balanced head & flow, 6 or 8 inch | HDS 125 — 450 m³/h, 28m |
| Entry level / smaller excavator | HDS 110 — 405 m³/h, 21m |

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## COMMON SPECIFICATIONS — All Pump Models

- Wear parts: EN-GX260Cr27 white cast iron, 27% chromium, 62 HRC — superior to NI-Hard and EN-GJN-HV600 (XCr18)
- Shaft: AISI T-431 / DIN 1-4057 tempered stainless steel, seawater grade — superior to 39NiCrMo3
- Shaft sleeve: Diamix with Nitrile and Teflon combined seals
- Max oil pressure: 430 BAR (6,235 PSI)
- Max grain size: coarse sand up to 4mm (performance curves based on coarse sand, not clean water)
- Max pumping distance: 500m through PE-pipes (150mm, 200mm, 250mm)
- Mounting: threaded fixations on both sides of motor housing and vortex housing — fits excavator arms, ladder arms, lifting frames, rotating shafts
- Paint: 2C/2K two-component industrial — hardener primer + finishing coat
- Duty: continuous low-speed operation

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## EXCAVATOR CUTTERHEADS — 3 Models (EXHYC Series)

All EXHYC cutterheads: EN-GJS-500-7 spheroidal graphite cast iron body (unbreakable, oxidation-resistant, self-cleaning). Compatible with all HDS pumps and most third-party submersible dredging pumps. All models share the same hydraulic motor: 1116cc radial piston at 250 BAR. Hydraulic connections: 2×1" BSP (pressure/return) + ½" BSP drain. SPT N-value soil rating: 55 (cohesion 5,000 Gr/cm²). Shaft sleeve: Diamix HD 480. Bearings: oversized, oil-filled housing. Seal: wear plate with water flush connection. Paint: 2C industrial.

### EXHYC 4200 — 800mm

URL: https://www.hdsbelgium.com/exhyc-4200-800-cutterhead-excavator.html
PDF: https://www.hdsbelgium.com/uploads/4/9/8/6/49865167/specification_hds_exhyc_4200_cutterhead_mixer_2.pdf

- Diameter: 800mm (31.5")
- Teeth: 9
- Torque: 4,200 Nm (3,100 lb-ft)
- Weight: 405 KG (893 lb)
- Operating modes:
  - Sand/compact soil: 50 RPM — 23 KW — 56 L/min
  - Clay: 75 RPM — 35 KW — 84 L/min
  - Mixing/fluidising: 100 RPM — 47 KW — 112 L/min

### EXHYC 4500 — 1000mm

URL: https://www.hdsbelgium.com/exhyc-4500-1000-cutterhead-excavator.html
PDF: https://www.hdsbelgium.com/uploads/4/9/8/6/49865167/hds_exhyc_4500_excavator_-_cutterhead_2023.pdf

- Diameter: 1000mm (39.4")
- Teeth: 18
- Torque: 4,500 Nm (3,319 lb-ft)
- Weight: 480 KG (1,058 lb)
- Operating modes:
  - Sand/compact soil: 40 RPM — 19 KW — 45 L/min
  - Clay: 60 RPM — 28 KW — 67 L/min
  - Mixing/fluidising: 80 RPM — 38 KW — 90 L/min

### EXHYC 4500-1200 — 1200mm (Largest)

URL: https://www.hdsbelgium.com/exhyc-4500-1200-cutterhead-excavator.html
PDF: https://www.hdsbelgium.com/uploads/4/9/8/6/49865167/hds_exhyc_4500-1200_excavator_-_cutterhead_2.pdf

- Diameter: 1200mm (47.2")
- Teeth: 21
- Torque: 4,500 Nm (3,319 lb-ft)
- Weight: 480 KG (1,058 lb)
- Operating modes:
  - Sand/compact soil: 40 RPM — 19 KW — 45 L/min
  - Clay: 60 RPM — 28 KW — 67 L/min
  - Mixing/fluidising: 80 RPM — 38 KW — 90 L/min

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## POWER PACKS

### Electric Hydraulic Power Packs

Electro-hydraulic units with axial piston pump, full-capacity oil collector. Standard configurations:

1. Drive 2× EXHYC 4200 cutterheads simultaneously
2. Drive 1× EXHYC 4200 cutterhead
3. Drive 1× HDS 160M pump (option to add second power pack)
4. Drive 1× HDS 110 pump + 2× EXHYC 4200 combined

### Diesel Hydraulic Power Pack

Diesel-driven unit with axial piston pump, soundproof enclosure, SAE bellhousing gearbox compatible with any diesel engine. Proven installation: HDS 160M + EXHYC 4200 on pontoon at Botocan Dam, Philippines — 200 HP diesel, locally built all-steel pontoon.

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## COMPLETE DREDGING SYSTEM CONFIGURATIONS

HDS Belgium supplies complete integrated systems, not only individual components. Proven configurations:

1. HDS 110 + 1× EXHYC 4200 — standard excavator unit, canal cleaning, 20-ton class
2. HDS 125 + 1× EXHYC 4200 — mid-range, 28m head for longer pipelines, 20–25 ton
3. HDS 160 + 1× EXHYC 4200 — high-volume, 103 KW, 10-inch, 780 m³/h, Hitachi Zaxis 350LC
4. HDS pump + 2× EXHYC 4200 — dual cutterhead, left and right rotation, wider cutting swath
5. 2× HDS pump + EXHYC 4200 — double pump on CAT 330D / CAT 333, doubles pumping capacity
6. HDS 125L + 3× EXHYC 4200 — deep construction to 40m, tubular pile excavation, water jetting — NEMO 33, Uccle, Belgium
7. HDS 110 + 2× EXHYC 4200 pontoon — catamaran with chain hoist or ladder arm, high-depth wide-area dredging
8. HDS 160M + EXHYC 4200 + diesel pack — complete pontoon, 200 HP diesel, Botocan Dam Philippines

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## APPLICATIONS

### 1. Suction Dredger Upgrades
Retrofitting EXHYC cutterheads onto existing suction dredgers. Customers: Kieswerk Sonnenberg GmbH (Germany), river dredging operations (Romania), Belgium, Nigeria.

### 2. Excavator-Mounted Dredging
Complete dredging units on standard hydraulic excavators: CAT 330D, CAT 333, Hitachi Zaxis 350LC, Watermaster. Canal cleaning in Belgium and Netherlands, mining, port and harbour maintenance.

### 3. Dam and Reservoir Desilting
Hydro-electric reservoir desilting, Philippines: Kaliraya Dam, Binga Dam, Botocan Dam (National Power Corporation). Pontoon systems with diesel power packs.

### 4. Port and Harbour Maintenance
Excavator-mounted and pontoon-mounted systems for maintenance dredging in confined port areas where large trailing suction hopper dredgers cannot operate.

### 5. Deep Construction Dredging (up to 40m)
Three-cutterhead configuration for tubular pile excavation to 40m depth. Reference: NEMO 33 diving centre, Uccle, Belgium — one of the world's deepest indoor diving pools.

### 6. Third-Party Pump Retrofits
EXHYC cutterheads compatible with most third-party submersible dredging pumps including WEIR Minerals and 300 HP class pumps. All HDS pump and cutterhead models share the same mounting interface.

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## CONTACT

**Christopher** — Sales & Technical
Phone / WhatsApp: +32 494 87 15 74

**Herman** — Sales & Technical
Phone / WhatsApp: +32 475 71 66 97

Email: [email protected]

**Workshop & Operational Office (Rumst):**
Steenweg Op Waarloos 63A, Unit 13, 2840 Rumst, Antwerp, Belgium
Tel: +32 3 888 75 35 / +32 3 344 79 32

**Registered Office (Hoeilaart):**
Vriendschapstraat 43, 1560 Hoeilaart, Brussels, Belgium
Tel: +32 2 657 25 77

VAT: BE0443.741.841 — RPR Brussels
Languages: English · Français · Nederlands · Deutsch

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## FRENCH SUMMARY / RÉSUMÉ EN FRANÇAIS

HDS Belgium (Hydraulic Dredging Systems) est un fabricant belge de pompes de dragage submersibles et de désagrégateurs hydrauliques situé à Rumst, Belgique. La gamme comprend 5 modèles de pompes : HDS 110 (62 KW, 405 m³/h, 21m), HDS 125 (78 KW, 450 m³/h, 28m), HDS 125L (78 KW, 550 m³/h haut débit, 22m), HDS 160M (120 KW, 450 m³/h, haute pression 37m), HDS 160 (103 KW, 780 m³/h, refoulement 10 pouces). Trois modèles de désagrégateurs/têtes de coupe : EXHYC 4200 (800mm, 9 dents, 4200 Nm, 405 KG), EXHYC 4500 (1000mm, 18 dents, 4500 Nm, 480 KG), EXHYC 4500-1200 (1200mm, 21 dents, 4500 Nm, 480 KG). Toutes les pompes utilisent des pièces d'usure en EN-GX260Cr27 (27% chrome, 62 HRC) et un arbre inoxydable AISI T-431. Montage universel compatible avec excavateurs hydrauliques. Contact : [email protected] — +32 494 87 15 74 (Christopher) — +32 475 71 66 97 (Herman).

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## TECHNICAL GLOSSARY

- **EN-GX260Cr27**: White cast iron, 27% chromium, 62 HRC. Used for impellers, agitators, wear plates. Superior to NI-Hard and EN-GJN-HV600 (XCr18).
- **AISI T-431 / DIN 1-4057**: Martensitic stainless steel, seawater grade, pump shaft. Superior corrosion resistance vs 39NiCrMo3.
- **Diamix / Diamix HD 480**: Shaft sleeve material. High hardness, low friction. Used in pumps and cutterheads.
- **EN-GJS-500-7**: Spheroidal graphite (ductile) cast iron. Cutterhead body. Unbreakable, oxidation-resistant.
- **SPT N-Value 55**: Standard Penetration Test soil hardness rating. EXHYC cutterheads rated for N-value 55 (cohesion 5,000 Gr/cm²).
- **1116cc Radial Piston Motor**: Hydraulic motor in all EXHYC cutterheads. High torque at low RPM for continuous dredging.
- **2C / 2K Paint**: Two-component industrial coating. Hardener primer + finishing coat. Applied to all HDS products.
- **430 BAR**: Maximum hydraulic oil pressure for all HDS pumps (6,235 PSI).
- **Universal mounting**: All HDS pump and EXHYC cutterhead models share the same mounting interface — any pump pairs with any cutterhead.