How a Universal Mill Works
A Universal Mill reduces material size through high-speed mechanical impact. Here’s the simple three-step process:
Feed & Accelerate
Material enters the grinding chamber and is struck by a high-speed rotor (with hammers, blades, or pegs), throwing particles outward.
Impact & Break
Particles collide with each other and against a stationary serrated liner, breaking down through repeated impact and shear.
Screen & Discharge
Ground material is carried by airflow to a surrounding perforated screen.
✔ Fine particles pass through the screen and exit.
✘ Oversized particles are recycled back for further grinding.
Advantages
- Adaptable Rotor Options: Choose from blade, hammer, or peg-and-disc rotors to match your material’s characteristics (brittle, fibrous, tough).
- Patented Screen Cartridge System: Change screens in minutes without tools, drastically reducing downtime between batches.
- Intelligent Airflow Design: Optional suction or pressure air assistance prevents heat buildup and improves throughput for light or fluffy materials.
- Safety First: All models feature interlocked safety switches and robust construction for secure, worry-free operation.
Applications & Materials
Your Go-To Solution for Diverse Grinding Tasks
- From food processing to chemical manufacturing and recycling, our Universal Mill is engineered to perform.
- Food & Feed: Cracking grains, grinding spices, sugar, dried vegetables, producing breadcrumbs, and processing animal feed.
- Chemicals & Plastics: Size reduction of salts, crystals, synthetic resins, and plastic pellets for recycling.
- Pharmaceuticals: Granule conditioning, coarse grinding of herbal materials and excipients (GMP models available).
- Specialty Industries: Processing wood chips, leather scraps, non-woven fabrics, e altro ancora.
Data Sheet
| Model | BUM-200 | BUM-300 | BUM-400 | BUM-500 | BUM-600 | BUM-800 |
| Capacity（kg/h） | 10-100 | 30-300 | 50-400 | 80-500 | 100-600 | 300-800 |
| Rotate speed(r/min) | 4500 | 3800 | 3400 | 2900 | 2000 | 2000 |
| Feed particle size(mm) | 6 | 10 | 10 | 10 | 10 | 12 |
| Discharge particle size（mesh ） | 20-120 | 20-120 | 20-120 | 20-120 | 20-100 | 20-100 |
| Power(kw) | 4 | 7.5 | 11 | 15 | 22 | 37 |
Configuration and application of the Universal Mill
Food Grade Universal Mill with 316L stainless steel
Universal Mill with Vacuum Conveyor
Compact Universal Crusher with Pin Disc
Universal Crusher With Dust Removal System
Beyond the Universal Mill, do you need other equipment?
Universal Mill FAQS
Universal Mills are highly versatile and suitable for many industries. Common materials include:
Food & Feed: Grains, spices, sugar, dried vegetables, breadcrumbs, animal feed.
Chemicals & Plastics: Salts, crystalline chemicals, synthetic resins, and plastic pellets (for recycling).
Pharmaceuticals: Herbal materials, excipients (with GMP-compliant designs).
Specialty Materials: Wood chips, leather scraps, and other recyclables.
For heat-sensitive or very hard materials (Mohs >4), we recommend consulting our engineers for a specific solution.
The final particle size is primarily controlled by the interchangeable screen. Our mills can typically produce output ranging from coarse granules (1-6 mm) to medium-fine powders (0.1-1 mm). For consistent results, we provide screens with various aperture sizes (e.g., 0.5mm, 1mm, 3mm, 6mm). Achieving a uniform particle size distribution relies on selecting the correct screen and maintaining a steady feed rate.
Absolutely. We are more than just an ACM manufacturer; we are a solutions provider for complete powder processing systems. We design, manufacture, and integrate all key auxiliary equipment to create a seamless, high-efficiency production line for you.
Our in-house capabilities include:
1.Feeding Systems: Volumetric or loss-in-weight feeders for consistent material input.
2.Pre-Sizing & Screening: Vibratory screens and crushers to ensure optimal feed size for the ACM.
3.Post-elaborazione & Classification: Cyclone separators, high-efficiency bag filter dust collectors, and precision screening machines to ensure final product purity.
4.Product Conveying & Handling: Screw conveyors, pneumatic conveying systems, and storage silos.
5.Automated Packaging: Valve bag packers, big bag fillers, and sealing systems.
By offering integrated turnkey solutions, we ensure perfect compatibility between all components, provide a single point of contact for support, and deliver a production line optimized for your specific material, capacity, and final product requirements. This saves you time, reduces interface risks, and guarantees overall system performance.
The main factors are:
Material Properties: Density, hardness, initial size, and moisture content.
Desired Final Particle Size: Finer grinding requires more energy and may reduce throughput.
Screen Size & Rotor Configuration.
We offer models with motor power from 7.5 kW to 90+ kW and capacities from 200 kg/h to over 10,000 kg/h. For an accurate recommendation, please provide your material details for a free grinding test.
vs. Hammer Mill: A Universal Mill is often more robust and offers greater versatility through easily interchangeable rotors (not just hammers) and screens. It’s generally designed for higher precision in particle size control across a broader range of materials.
vs. Air Classifying Mill (ACM): An ACM uses an air classifier for ultra-fine grinding (down to 5-10 microns) and is ideal for heat-sensitive materials. A Universal Mill uses mechanical screens for coarser grinding (100+ microns), excels at high-throughput bulk processing, and is simpler and more cost-effective for applications not requiring ultra-fine powder.
Our Universal Mills are designed for easy cleaning and quick changeover. Key features include:
Quick-Access Doors: Allow full entry to the grinding chamber.
Tool-Free Screen & Rotor Changes: Patented clamping systems enable component swaps in under 30 minutes.
Smooth, Polished Surfaces: Minimize material adherence and simplify cleaning, essential for food and pharmaceutical GMP standards.
Routine maintenance primarily involves inspecting and replacing wear parts like screens and hammers.
Absolutely. We provide extensive customization options:
Construction Materials: Carbon steel, food-grade stainless steel (304/316L).
Special Features: Explosion-proof (ATEX) motors, dust-proof housings, nitrogen inerting systems, water-cooled bearings.
Integration: Custom feed hoppers, screw feeders, and connections to pneumatic conveying or sieving systems.
