Wet Grinding

Nano mill Zeta® RS

Innovation in Wet Grinding Technology

The nano mill Zeta® RS is the next development of the worldwide known circulation mill system Zeta®  type LMZ. Its field of application starts where the other agitator bead mill system Zeta® ends. The highly efficient centrifugal separation system enables the use of smallest grinding media from a diameter of 30 – 300 µm in reliable continuous operation. 

It is specially designed for wet grinding and dispersing processes especially "gentle dispersing" in the nanometer range. Working with the machines is a pleasure due to its easy operation. 

The agitator bead mill Zeta® RS is equipped with a swiveling grinding unit and lifting device with multiple positions for easy emptying, filling and cleaning and a horizontal working position.

Focus on Your Advantages

  • Compact design for minimum space requirement
  • Easy handling with swiveling grinding unit and sliding grinding tank
  • Prevention of grinding media loss, very easy cleaning and ease of use
  • Reliable use of micro grinding beads in the range of 30 μm - 300 μm
  • No screen blockage thanks to the ODC/SDC separation system
  • Variety of materials available for grinding systems (can be interchanged)
  • Large selection of grinding chamber materials (can be combined)

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Your Inquiry


  • Fives sizes with 2 l, 4 l, 10 l, 25 l and 60 l grinding chamber volume
  • Peg grinding system with small length/diameter portion
  • ATEX-conform design in ergonomic design
  • Highly efficient dynamic centrifugal separation system
  • Use of smallest grinding media from 50 to 300 µm
  • Integrated grinding media collecting tray for loss-free emptying
  • Easy handling due to swiveling and carriage-type grinding chamber
  • Control of the mill drive and feeding pump via frequency inverter
  • Flow meter to control the product flow
  • Pressure control by contact manometer
  • Measurement of the product inlet and outlet temperature, optionally also available for cooling water temperature
  • Flow measurement of the chamber cooling
  • Grinding chamber design of stainless steel as standard. Wear and corrosion resistant designs for metal free processing are available in the materials NETZSCH Ceram_C / NETZSCH-Ceram N, NETZSCH-Ceram Z, NElast


During development of the Zeta® RS machine series, special emphasis was placed on ease of use. Filling and emptying as well as servicing and cleaning the machine are easily accomplished without the loss of grinding media.

  • Positionable grinding tank
  • Integrated, removable grinding media collection tray
  • For even greater usability, an optional swivel-mounted grinding chamber is available for models Alpha® Lab, Zeta® RS to Zeta® RS 10

Filling Position

Operating Position

Emptying and Cleaning Position

Your Contact at NETZSCH

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