POLYGON MACHINE
Polygonmachine PCW Series – Coarse Material Washers
Polygonmachine PCW Series Coarse Material Washers are engineered for the rigorous washing of gravel, crushed stone, and coarse aggregate materials.
Designed to remove clay lumps, dust, light organics, and surface contaminants, the PCW Series ensures clean, high-quality aggregates suitable for concrete, asphalt, and base material applications.
Using a dual or single screw configuration, these washers transport material through a water-filled tank, allowing the heavier cleaned aggregate to sink and move upward, while unwanted lightweight materials overflow from the weirs.
Technical Specifications
| Model | Screw Size (mm) | Power (kW) | Max Feed (mm) | Tank Volume (m³) | Spiral Speed (rpm) | Capacity (tph) | Incline (°) | Weight (kg) | Configuration |
|---|---|---|---|---|---|---|---|---|---|
| PCW 4050 | 400 × 5000 | 7.5 | 50 | 2.8 | 12–20 | 20–40 | 8° | 2200 | Single / Double |
| PCW 6560 | 650 × 6000 | 11 | 50 | 5.0 | 12–20 | 40–70 | 8° | 3800 | Single / Double |
| PCW 9070 | 900 × 7000 | 15 | 50 | 8.0 | 12–20 | 70–100 | 8° | 5500 | Single / Double |
| PCW 1180 | 1100 × 8000 | 18.5 | 50 | 10.5 | 12–20 | 100–130 | 8° | 7200 | Single / Double |
| PCW 1111 | 1100 × 11000 | 22 | 50 | 14.0 | 12–20 | 120–160 | 8° | 7800 | Single / Double |
Note: Double-screw versions weigh approximately 1.8× more.
Key Features
Effective Cleaning of Coarse Aggregates
Removes clay balls, mud, dust, and lightweight contaminants.
Ideal for pre-washing before screening or crushing stages.
Heavy-Duty Construction
Manufactured from S235JR structural steel.
High-thickness sidewalls and abrasion-resistant liners at critical zones.
Reinforced screw shafts and wear-resistant spirals for long service life.
Optimized Dewatering
The 8° inclined tank allows washed aggregate to drain efficiently before discharge.
Controlled overflow weirs enhance removal of organics and silts.
Variable Washing Intensity
Spiral rotation speed adjustable between 12–20 rpm.
Water level control ensures proper hydraulic separation.
Single or Double Screw Configurations
Single screw: compact footprint, suitable for lower throughputs.
Double screw: higher capacities and increased washing performance.
Ease of Maintenance
Wear parts (spiral flights, liners) are fully replaceable.
Drive system located above water level for long bearing life.
Performance
Feed Size: Up to 50 mm gravel, crushed stone, or coarse sand.
Capacity Range: 20–160 tph depending on model and material.
Moisture Reduction: Efficient drainage due to long tank geometry.
Cleaning Efficiency: High removal rate of organics and bonded clays.
Power Efficiency: Low installed power across the PCW range.
Applications
Quarry Operations – Cleaning primary crushed aggregates.
Sand & Gravel Plants – Upgrading natural or dredged materials.
Recycling Facilities – Removing soil and organics from C&D aggregates.
Concrete Production – Producing clean aggregates that meet specification.
Pre-Wash Stage – Before hydrocyclone, screening, or log washer systems.