High-torque cutting mill for tough and fibrous materials

Tackle the toughest materials and ensure consistent particle size control with this cutting-edge mill, designed to effortlessly process diverse materials from soft plastics to fibrous residues, ensuring seamless integration into your production line for optimal efficiency.

The Cutting Mill SM 300 from Retsch GmbH is an advanced solution for challenging material processing tasks across multiple industries, such as pharmaceuticals, agriculture, and recycling. Equipped with a robust 3 kW motor featuring high torque and RES technology, this mill excels in reducing a wide range of materials—including soft, medium-hard, and tough compositions—into precise particle sizes. The SM 300 operates on a variable speed range of 100 to 3,000 min-1, accommodating diverse application requirements. Its double acting cutting bars and interchangeable rotor types enhance cutting efficiency, while the optional cyclone separator aids in processing heat-sensitive materials. Available in stainless steel versions including 316L for food and pharmaceutical applications, the mill supports high material recovery and easy maintenance. Safety features such as an electronic check prevent operation with an open door, and the design facilitates ease of cleaning between batches, making the SM 300 an integral part of seamless and efficient production lines.

Benefits

  • Enhances processing efficiency by handling tough and elastic materials with high torque and RES technology.
  • Allows precise control of particle size with a variable speed range, optimizing product uniformity.
  • Supports easy cleaning and quick maintenance with a user-friendly design, minimizing downtime.
  • Adapts to various production needs with interchangeable rotor types, offering flexibility in applications.
  • Ensures high material recovery rates and consistent quality output, crucial for sensitive product formulations.
Applications
Chemistry,Secondary fuels,Food,Polymers,Biofuel,Electronics,Animal feed,Biology,Plant materials,Plastics,Wood,Recycling,Pharmaceuticals,Metal powders,Medicine,Waste,Environment,Agriculture,Textiles
End products
Recycled cardboard pulp,Synthetic rubber granules,Industrial adhesives,Medicinal plant powders,Biodegradable polymers,Pharmaceutical powder,Eco-friendly packaging material,Mdf wood chips,Plastic pellets,Pet bottle flakes,Lignocellulosic feedstock,Animal diet formulations,Herbal concentrates,Food flavorings,Pigment dispersions,Food additive powders,Resin particles,Cellulose insulation fibers,Nutraceutical powders,Mulch from yard waste,Electronic waste granules,Algae biofuel,Polyester fibers,Biomass briquettes
Steps before
Grinding,Size Reduction,Material Preparation,Pre-processing
Steps after
Sample Analysis,Packaging,Material Collection,Sieving
Input ingredients
soft materials,medium-hard materials,tough materials,elastic materials,fibrous materials,heterogeneous mixes,PET preforms,aluminium slag,animal feed,bones,cables,cardboard,electronic components,feed pellets,foils,food,leather,lignite,material mixtures,non-ferrous metals,paper,pharmaceutical products,plant materials,plastic toys,plastics,polymers,refuse derived fuels,resins,rubber,spices,straw,textiles,waste,wood,fish,nuts,secondary fuels,biofuels
Output ingredients
reduced particle size,homogenized samples,uniform particle size,powder
Speed
100 - 3000 min-1
Drive Power
3 kW with flywheel mass ~ 28.5 kg
Rotor Peripheral Speed
4.7 - 20.3 m/s
Material Feed Size
< 60 x 80 mm
Final Fineness
0.25 - 20 mm
Types of Rotors
Parallel section rotor / 6-disc rotor / V-rotor
Types of Hoppers
Universal,Long Stock
Sieve Sizes
Trapezoid holes 0.25 / 0.50 / 0.75 / 1.00 / 1.50 mm,Square holes 2.00 / 4.00 / 6.00 / 8.00 / 10.00 / 20.00 mm
Collector Systems / Capacities
Collecting receptacle 5 l / optional
Material of Grinding Tools
Stainless steel,Steel for heavy-metal free grinding,Tungsten carbide
Protection Code
IP 20
Size (W x H x D Closed)
576 (1080 opened) x 1677 x 750 mm
Net Weight
~ 160 kg
Variable Speed Control
100 to 3,000 min-1
Automation level
Manual / Electronic Safety Checks
Easy Operation,Cleaning
Tool-free dismantling and cleaning
Batch vs. continuous operation
Continuous
Changeover time
Quick due to easy assembly/disassembly
Cleaning method
Manual with fold-back hopper access
Abrasion resistance
Suitable for tough,fibrous materials
Biological compatibility
Yes,foodGrade version available
Cleanability
Easy to clean,smooth surfaces
Corrosive resistance (e.g. acids)
316L stainless steel option
Density/particle size
0.25 - 20 mm final fineness
Machine Weight
~ 160 kg
Rotor Types
Parallel section rotor / 6-disc rotor / V-rotor
Hopper Types
Universal hopper / Long-stock hopper
Cyclone Compatibility
Optional cyclone separator
Material of Grinding Tools
Stainless steel / Steel for heavy-metal free grinding / Tungsten carbide
Market info
Retsch is renowned for manufacturing high-quality laboratory equipment, specializing in milling, sieving, and assisting technologies for sample preparation and characterization, known for precision, reliability, and innovation in the scientific and industrial laboratory markets.