N.Mac® Inline Twin Shaft Grinder

N.Mac® Inline Twin Shaft Grinder

Full service in place for grinding impurities in pipeline installations

Protect your system from impurities: The N.Mac® inline twin shaft grinder crushes fragmenting large and solid particles in liquid media and impresses with its FSIP® concept (Full Service in Place). It is ideal for various applications, from wastewater treatment and substrates to food and fruit residues for biogas plants.

The inline housing design allows you to install it in pipeline systems to protect the following equipment, such as your pumps. Despite the pipeline installation, the macerator offers you the proven FSIP® concept due to its innovative design. This means you can carry out complete maintenance without removing it from the pipeline, saving you time and the associated costs. Depending on the desired crushing degree, you can choose from numerous tooth combinations. The different blade designs with three to eleven teeth can be easily replaced. This means you can determine the degree of shredding yourself. In addition, there are different blade blocks with unique geometry for optimal comminution of solids. If a blockage should nevertheless occur, an optional control system with reversal of the direction of rotation offers you a remedy. This allows you to easily remove blockages in the cutting devices without having to dismantle the shredder.

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N.Mac® Inline Twin Shaft Grinder

1 Housing
Housing for pipe installation to protect against pipe blockage and damage to connected equipment.

2 Cutting unit
There are different cutting blocks with special geometry for optimum crushing of the solids. To achieve the desired size reduction result, the different knife configurations with three to eleven teeth can be combined with each other. Knife configuration with seven teeth as standard. The cutting tools are hardened to increase impact resistance and sharpness, so that even the most difficult of contaminants can be shredded reliably.

3 Shaft seal
Mechanical seal with quench and patented bearing and mechanical seal cartridges.

4 Drive
Energy-efficient motors with 2.2 kW, 3 kW or 4 kW are installed as standard. These offer optional control with reversal of direction of rotation for protection in the event of blockages.

5 Inline version
Product inlet and outlet are at the same height. The N.Mac® can be connected directly into a horizontal pipeline or to a suction connection of a pump rotated 90° to the side.


Flow rate


Pressure drop


Maximum pressure


Approximate weight


N.Mac® 50l 50 0.05 6 220
N.Mac® 150l 150 0.12 6 360
N.Mac® 350l 350 0.08 6 780

*Further sizes and technical data on request.

  • Protects the system from damage caused by contaminants
  • Anti-vibration system: Exclusive elastomer to seal the lower bearings and absorb vibrations generated during shredding
  • Bearing and mechanical seal cartridges to protect the bearings
  • Optional cleaning brush for fibrous materials removes material in the gaps between the blades
  • Cutting devices in the cartridge system
  • Modular design of the cutter blocks allows individual combinations
  • Easy on-site maintenance thanks to innovative FSIP® design
  • Retractable suspension lugs to facilitate disassembly

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