CSM Classifier Mill

Higher Finenesses Possible!

The CSM classifier mill combines a mechanical impact mill with an integrated dynamic air classifier. The grinding is performed between a peripheral grinding track and the rotating beater gear. Due to the integrated classifier wheel, grain sizes free of coarse particles can be achieved without the disadvantages of an external grinding and classifying circulation system. Internal classification of the coarse material results in a more stable and energy efficient process than a mill with an external classification circuit.

Through this highly developed classifier technology with its horizontal classifier wheel, a rotationally symmetrical classification is achieved that ensures that very high finenesses with precise maximum particle size distributions can be obtained (free of coarse particles). In addition, the classifier wheel is more evenly loaded than in machines with vertical shaft classifier wheels.

The easy to open machine housing enables fast, complete cleaning of the machine when products are changed.



  • Finenesses from d97 10 µm to d97 150 µm (based on limestone)
  • Rotor impact mill with rotating integrated dynamic air classifier wheel provides exactly defined maximum particle size
  • Classifier wheel with exchangeable, simultaneously rotating immersion tube to achieve highest finenesses, unlimited adjustment
  • Gap between classifier wheel and fines outlet rinsed by gas for highest possible prevention of oversize particles in the product
  • Classifier shaft seal rinsed by compressed gas to protect the bearings
  • Hinged housing lid provides very good access for easy, fast cleaning and maintenance
  • Separate drives for grinding disc and classifier wheel
  • Highest finenesses at maximum throughput achievable with only one classifier wheel
  • Even loading of classifier wheel through rotationally symmetrical construction of the machine
  • Minimal warming of product due to the controlled air stream
  • Reproducible results
  • Steep particle size distributions
  • Optional designs available: pressure shock resistant, gas tight, wear protected
the classifier mill for fine powder free of coarse particles








The Classifier Mill CSM is a combination fine impact mill and deflector wheel classifier. The integration of a mill and classifier in a single housing offers value-added benefits - a easy to clean and use compact milling plant.


With the CERAMIC-execution of the CSM classifier mill, dry fine-grinding is possible without metal contamination of the grinding product! All machine parts in contact with the grinding product are completely made of ceramic or have a ceramic lining.


Our long-term experience with a diversity of products in these fields, is available for your toll grinding needs.


NETZSCH Trockenmahltechnik GmbH, one of the global leading companies in the area of dry product processing, is part of the Business Unit Grinding & Dispersing of the NETZSCH Group. Customers profit from our comprehensive experience potential and our diverse machine program, ranging from laboratory- and production machines to complete production lines. Fine impact mills, classifying- and jet mills as well as fine-cutting mills and high-efficiency fine classifiers made by NETZSCH are mainly used in the application areas chemistry, inorganic materials/minerals, ceramics and life science for pharma- and food applications.

the classifier mill for fine powder free of coarse particles

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CSM 50 and CSM 80 Classifier Mill

The mechanical impact mill with highly developed classifying technology – solid, robust, precise upper particle size limitation.

For finenesses from 10 to 150 µm (d97).

Machine size with grinding air capacity of approximately 100 to 180 Nm³/h.

CFS/HD-S High-efficiency Fine Classifier

The requirements of many product applications such as improved separation sharpness and finer cut points, are no problem for the CFS/HD-S range of High-efficiency Fine Classifiers.

Thanks to the maximum predispersion of the product to be classified, the targeted cut point and sharpness of cut can be optimized distinctly.

Available for finenesses from 2.5 to 60 µm (d97).

Machine sizes available for gas volume from approximately 50 to 16.000 Nm³/h.


The LabCompactPlus was especially designed for use in laboratories - machine (mills or classifiers) are taken up by a swivel arm on the machine base and can be exchanged very easily.

Impact Mill Condux®

The mechanical fine impact mill or centrifugal mill is usually operated in the form of a pin disc mill, blast mill, wing beater mill or grooved disc mill. Many products and finenesses for a wide variety of applications are processed with the universal mill, with a wide range of rotor and stator combinations that can be easily changed. Applicable for finenesses from 30 to 800 µm (d97).

Machine sizes with drive capacities from 1.1 - 250 kW and air volume of approx. 140 - 31,000 Nm³/h.