cm500-cutting-mills

CM500 Cutting Mill

Superior Cutting Mill engineered for rapid reduction of large particles

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The CM500 Cutting Mill is used for batch and continuous grinding of hard, soft to brittle and tenacious plastics among many other products like, rubber, wood, grass, herbs etc. It is possible to choose between different feed hoppers and different knifes from hardened steel, tungsten carbide or heavy metal-free-steel depending on the grinding material. At the end of each milling the door can be opened to remove the knifes and easily clean the grinding chamber.

Feautures and Benefits

  • Rapid reduction of large particles
  • Suitable for a wide range of material with different characteristics
  • Quick and easy to clean and maintenance
  • Full range of bottom sieves available
  • Supports a wide range of infeed hoppers with with plungers
  • Interchangeable knives
  • The CM500 can handle samples of up to 30Kg/h
cm500-cutting-mill-open-rotor-and-bottom-sieve-close-view

Technical Specifications

Applications Rapid size reduction of tough, fibrous, or heterogeneous materials, for sample preparation in sectors like environmental analysis, recycling, agriculture, and pharmaceuticals.
Working principle Cutting with high speed rotating knifes
Cutting chamber 130mm x 200mm
Feed size up to 100mm depending on sample
Quantity minimum 50gr
Quantity maximum Up to 30 kgs per hour
Throughput 250 kg/h
Speed setting 224rpm
End-fineness 250 μm
End-fineness adjustment By interchangeable bottom sieves
Setting adjustment method external start and stop button
Consumeable material stainless steel bottom sieves and rotors
Consumeable sizes 0,50mm - 2,00mm trapezoid
3,00mm - 20mm round holes
Rotor diameter 150mm
Number of Rotor knifes 9
Number of stator knifes 2
Screen size 3-8 mm
Electrical requirements 3 kW
Power supply 3x400V/50Hz
Power connection 3 phase
Dust extraction point 1
Standard CE
Protection code IP40
Weight 135kg
Dimensions (width x length x height) 390 x 485 x 375 mm

Cutting Mill working principle

The LAARMANN CM500 Cutting Mill is a versatile size reduction solution designed for both laboratory and pilot-scale applications. It efficiently processes plastics, rubber, wood, biomass, and other tough or fibrous materials with consistent throughput and high cutting precision.

At the core of the CM500 is a high-speed rotor fitted with multiple hardened steel blades. These rotating knives work together with adjustable stationary blades to generate strong cutting and shearing forces. This dual-knife system guarantees efficient particle reduction and uniform output.

The integrated feed hopper ensures controlled material intake, supporting both batch and continuous grinding. Once the desired particle size is reached, material passes through the interchangeable bottom sieve, allowing operators to fine-tune output size according to application requirements.

Built with wear-resistant components and designed for operator safety, the LAARMANN CM500 Cutting Mill is ideal for laboratories, recycling facilities, and industrial testing environments.

How it works

The material to be milled is fed into the cutting mill through the feed hopper. The feeding mechanism, if present, helps control the flow of material into the cutting chamber.

As the material enters the cutting chamber, it is caught by the rotating blades and subjected to cutting, shearing, and impact forces. The stationary knives assist in the cutting process by providing a counteraction to the rotating blades. The material is continuously cut and reduced in size as it moves through the chamber, with particles becoming progressively smaller until they can pass through the screen or sieve.

The final particle size is controlled by the size of the openings in the screen or sieve. Only particles that are small enough to pass through the screen are discharged from the mill, ensuring a consistent and uniform output. By changing the screen size or adjusting the blade configuration, the operator can achieve different particle sizes and textures.

The milled material is collected in a container or directed to the next stage of processing. The resulting fine powder or granules can then be used for further analysis, production, or recycling.

High operator convenience and maximum safety

The Cutting Mill is the first machine in a sample preparation laboratory of today when it comes to sample preparation of cuttable materials. This system is suitable for the coarse and fine grinding of any dry substance, typically samples with a feed size of up to 100mm and a total batch of up to 30kgs per hour (volume depending on the characteristic of the samples) can be ground down to 1,00 mm or finer depending on the product.

Maximum Grinding performance and maximum safety is important for LAARMANN Mills. Due to two integrated safety switches (door and collector) the machine can only be started when the "Easy Lock Cover" is closed and the Sample collector is inserted properly. The Infeed Hopper as well as the housing of the CM500 is made from solid steel. The ergonomic design of the machine and the positioning of the funnel and the starter box require a minimum space in the laboratory.

CM500 Cutting Mill FAQ (Frequently Asked Questions)

Laarmann cutting mills are designed for a wide range of materials including plastics, rubber, wood, biomass, textiles, fibrous and medium-hard substances.

Final particle size depends on the selected bottom sieve aperture. Smaller apertures produce finer particles, while larger ones provide coarser output.

These mills feature easily accessible chambers and removable blades, enabling efficient cleaning and reduced downtime.

All models include integrated safety switches and ergonomic design to prevent operation unless covers are securely in place.

Yes. On request most models can be adjusted for continuous grinding with consistent throughput.

Applications

Application Examples: Linoleum, Carpets, Cloth, Secondary fuels and Bio Mass, Food and Animal food, Wood, Papaer, Carton, Cellulose, Rubber, Shredder Light Fractions, House Waste, Industrial Waste, Computer Scrap and Electronic Scrap, Plants, Twigs, Roots Herbs, Spices, Gras, Straq, Technical Plastics such as ABS, PA, POM, PE, Bones

  • Pharmaceuticals: Used to mill active pharmaceutical ingredients (APIs) and excipients to a fine powder for tablet production or other dosage forms.
  • Food Processing: Employed to reduce the size of food products such as spices, grains, or dehydrated vegetables, enhancing their usability in production or packaging.
  • Plastics and Recycling: Ideal for shredding plastic waste, rubber, and other polymers into smaller pieces for recycling or reprocessing.
  • Agriculture: Utilized to grind seeds, grains, and other agricultural products for feed, biofuel production, or other applications.
  • Environmental Science: Applied to reduce the size of environmental samples, such as soil or plant material, for analysis and testing.

In a recycling facility, a cutting mill might be used to process plastic waste. The plastic materials, such as bottles or containers, are fed into the mill, where the high-speed rotating blades shred the plastic into small granules. These granules can then be melted and reformed into new plastic products, reducing waste and promoting sustainability.

Visit our Applications page for our database of specific applications

Waste material and plastics

Straw grass