CM4000 Cutting Mill
The CM4000 Cutting Mill is used by laboratories and processing companies for cutting granulate solid materials such as waste, wood and thermoplastics.
The CM4000 Cutting Mill is used by laboratories and processing companies for cutting granulate solid materials such as waste, wood and thermoplastics. The material to be processed falls into the cutting chamber of the Cutting Mills via a guide chute. Than the product is shredded between rotating and fixed knives. The product passes the sieve as soon as its reached the desired size. The sieve extends over the lower half of the grinding chamber and can be changed easily. Final particle size is determined by the selected sieve perforation aperture. When the grinding process is finished the grinding chamber is fully accessible for quick and easy cleaning by unscrewing two hand screws and folding back the infeed hopper.
Features and Benefits
- Quick and easy to clean
- Full range of bottom sieves
- The CM4000 can handle samples of up to 200Kg/h
Technical Specifications
| Applications | rapid size reduction of tough, fibrous, or heterogeneous materials, ideal for sectors like environmental analysis, recycling, agriculture, and pharmaceuticals |
| Working principle | cutting with rotating knifes |
| Feed size | up to 350mm* |
| End fineness | < 1 mm* |
| Throughput | 200 kg/h |
| Speed setting | 280 / 540 rpm |
| Cutting chamber | 250mm * 385mm |
| Setting adjustment method | external start and stop button |
| Rotor material | stainless steel, others on request |
| Bottom sieve material | stainless steel, others on request |
| Bottom sieve sizes | 4 - 20mm round holes |
| Rotor sizes | 195mm diameter |
| Number of rotor knifes | 18 |
| Number of stator knifes | 2 |
| Electrical requirements | 5,5 / 7,5 kW |
| Power supply | 400V ± 10% - 50/60Hz different requirements on request |
| Power connection | 3 phase |
| Dust extraction point | 1 |
| Standard | CE |
| Weight | 430kg |
| Dimensions (width x length x height) | 1000 x 1025 x 1930 mm |
Cutting Mill working principle
The LAARMANN CM4000 Cutting Mill represents the highest-capacity cutting mill in the range, engineered for heavy-duty industrial size reduction. Designed for demanding applications, it processes large and tough materials including plastics, wood waste, biomass, textiles, and industrial scrap.
The powerful rotor assembly is fitted with multiple precision-engineered cutting blades that operate at high speed to deliver exceptional cutting efficiency. Adjustable stationary knives create a precise scissor-like action, ensuring uniform particle size reduction even with challenging materials.
A robust feed system enables consistent, high-volume material intake, while the optimized cutting chamber minimizes buildup and simplifies maintenance. The bottom sieve system controls final particle size, ensuring reliable and repeatable results.
The LAARMANN CM4000 Cutting Mill is the ideal solution for industrial facilities requiring maximum throughput, durability, and consistent particle size control.
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.
HM4000 Hammer Mill
Our sample preparation hammer is designed for efficient and consistent crushing of raw materials in laboratory and field environments.
Built with durability in mind, it delivers precise, repeatable results while withstanding heavy-duty use.
Whether used as part of a larger sampling system or as a standalone tool, this hammer ensures optimal particle size reduction for accurate analysis.
Its ergonomic design and high-quality construction make it an essential instrument for reliable sample preparation.
High operator convenience and maximum safety
To protect operators and equipment, cutting mills are equipped with safety features such as emergency stop buttons, overload protection, and safety covers that prevent access to moving parts during operation.
Due to the integrated safety switch the machine can only be started when the "Easy Lock Cover" is closed and the grinding chamber cover is inserted properly.
The Infeed Hopper as well as the housing of the CM4000 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.
Bottom sieves
The size of the bottom sieve is important in order to decrease the heat creation during the grinding and to increase the capacity. This assures a large open surface which is essential for the cutting process to:
- Obtain a high throughput
- Have a low heat creation during the grinding process
- Receive a homogeneous result
CM4000 Cutting Mill FAQ (Frequently Asked Questions)
Applications
Linoleum, carpets, cloth
Secondary fuels and bio mass
Food and animal food
Wood, paper, carton, cellulose
Rubber, shredder light fractions
House waste, industrial waste
Computer scrap and electronic scrap
Plants, twigs, roots etc.
Herbs, spices, gras, straq,
Bones
Technical plastics such as ABS, PA, POM, PE etc
- Mill active pharmaceutical ingredients (APIs) and excipients to a fine powder for tablet production or other dosage forms.
- Reduce the size of food products such as spices, grains, or dehydrated vegetables, enhancing their usability in production or packaging.
- Ideal for shredding plastic waste, rubber, and other polymers into smaller pieces for recycling or reprocessing.
- Grind seeds, grains, and other agricultural products for feed, biofuel production, or other applications.
- 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