Industrial Granulators: High-Efficiency Size Reduction Systems
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BritSOLIDS provides a robust range of Industrial Granulators engineered for the precision size reduction of plastics, wood, rubber, and chemical bulk solids. Designed for high-torque performance and minimal dust generation, our granulators transform bulky scrap into high-quality, uniform regrind suitable for immediate re-entry into your production cycle.
Heavy-duty industrial granulator
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Engineering Excellence in Size Reduction
For UK manufacturers, the goal of granulation is maximum recovery with minimum energy. Whether you are processing injection moulding sprues, timber offcuts, or blow-moulded containers, our granulators ensure a consistent particle size, protecting the integrity of your final product.
- Optimised Blade Geometry: Precision-ground rotating and stationary blades provide a “scissor-cut” action, reducing heat buildup and preventing material degradation.
- Adjustable Screen Sizes: Interchangeable screens allow you to control the exact output diameter (e.g., 4mm to 12mm) based on your specific process requirements.
- High-Torque Drive: Engineered to handle high-impact loads without stalling, making them ideal for heavy-wall pipes or dense wood waste.
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Granulator Configurations
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We offer various configurations to suit your facility’s layout and throughput needs:
1. Beside-the-Press Granulators
Compact units designed for in-line granulation. These are ideal for injection moulding facilities, allowing for the immediate recycling of sprues and runners directly at the machine.
- Benefit: Eliminates the risk of material contamination and reduces internal logistics.
2. Heavy-Duty Central Granulators
Designed for the bulk processing of large-volume scrap, bulky parts, and heavy-walled materials.
- Benefit: High throughput capacity (up to 1,000+ kg/h) for centralized recycling departments.
3. Specialist Wood & Rubber Granulators
Reinforced chambers and specialized metallurgy ensure long-lasting performance when processing abrasive timber, plywood, or elastic rubber components.
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Technical Features for the UK Market
- Safety Interlocks: Fully compliant with CE and UKCA safety standards, featuring electronic interlocks and emergency stop systems.
- Acoustic Insulation: Integrated sound-dampening enclosures reduce operational noise levels to satisfy HSE workplace regulations.
- Easy Access for Cleaning: The split-chamber design allows for rapid blade changes and thorough cleaning during material colour changes.
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Technical FAQ: Industrial Granulation
Q: What determines the “Regrind Quality”?
A: Regrind quality is a balance of blade sharpness, rotor speed, and screen hole size. A clean, uniform cut produces fewer “fines” (dust), which ensures a more stable melt index when the regrind is re-used.
A: Regrind quality is a balance of blade sharpness, rotor speed, and screen hole size. A clean, uniform cut produces fewer “fines” (dust), which ensures a more stable melt index when the regrind is re-used.
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Q: Can your granulators handle contaminated materials?
A: While designed for clean scrap, we recommend installing a Magnetic Separator (like our Grate Magnets) before the hopper to protect the blades from metallic “tramp” damage.
A: While designed for clean scrap, we recommend installing a Magnetic Separator (like our Grate Magnets) before the hopper to protect the blades from metallic “tramp” damage.
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Q: How often do the blades need sharpening?
A: This depends on the abrasiveness of the material. For standard plastics, blades typically require inspection every 500–1,000 hours. We offer a full range of replacement blades and sharpening services.
A: This depends on the abrasiveness of the material. For standard plastics, blades typically require inspection every 500–1,000 hours. We offer a full range of replacement blades and sharpening services.
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Granulator Performance: Throughput vs. Motor Power
In size reduction, “throughput” is not just a measure of speed; it is a balance of motor torque, rotor diameter, and material density. UK engineers must select a motor capable of handling “peak loads”—such as the initial impact of a thick-walled plastic part—without stalling.
Technical Performance Estimates
Figures below are based on a standard 6mm – 8mm screen size.
| Motor Power (kW) | Rotor Diameter (mm) | Typical Throughput (kg/h) | Ideal Application |
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| 2.2 – 4.0 kW | 150 – 200 | 20 – 50 | Beside-the-Press: Small sprues & runners. |
| 5.5 – 11.0 kW | 250 – 300 | 80 – 200 | Mid-Range: Blow-moulded bottles & thin crates. |
| 15.0 – 30.0 kW | 400 – 500 | 250 – 600 | Central Granulation: Heavy-wall pipes & timber. |
| 45.0 kW+ | 600+ | 800 – 1,200+ | High-Volume: Large bulky scrap & rubber bales. |
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High-efficiency Granulators – Factors Affecting Your Hourly Throughput
1. Material Bulk Density
Light materials like Expanded Polystyrene (EPS) or thin-walled plastic film take up significant volume but have low weight. For these materials, the physical size of the Feed Hopper is more critical than the motor’s kW rating. Conversely, dense materials like Nylon (PA6) or Acetal (POM) require high-torque motors to “shear” the material effectively.
Light materials like Expanded Polystyrene (EPS) or thin-walled plastic film take up significant volume but have low weight. For these materials, the physical size of the Feed Hopper is more critical than the motor’s kW rating. Conversely, dense materials like Nylon (PA6) or Acetal (POM) require high-torque motors to “shear” the material effectively.
2. Screen Hole Diameter
The smaller the final regrind size, the longer the material stays in the cutting chamber.
The smaller the final regrind size, the longer the material stays in the cutting chamber.
- 8mm Screen: High throughput, larger granules.
- 4mm Screen: Lower throughput (approx. 30-40% reduction), but produces a finer, more uniform regrind.
3. Blade Configuration & Sharpness
A “Dull” blade doesn’t cut; it “tears,” which generates excessive heat and dust (fines). This friction increases the electrical load on the motor, reducing throughput and potentially melting sensitive plastics like PVC or LDPE.
A “Dull” blade doesn’t cut; it “tears,” which generates excessive heat and dust (fines). This friction increases the electrical load on the motor, reducing throughput and potentially melting sensitive plastics like PVC or LDPE.
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Scrap Granulators – Technical Selection Checklist
Before requesting a quote, UK engineers should confirm the following process variables:
- Maximum Part Size: Does the part fit through the hopper throat?
- Wall Thickness: Is the motor torque sufficient for the thickest section?
- Required Regrind Size: Which screen diameter is needed for your extruder or injection moulder?
- In-feed Method: Will it be fed manually, by conveyor, or via an automated robot arm?