Preparing natural fibres

Efficient solutions for wood grinding with hammer mills

Tietjen und wood industry

Our hammer mills crush wood and fibres what you want and how you want it.


Whether it’s forest or industrial residual wood, whether it’s dry or wet wood, whether it’s large or small quantities, whether it’ s frequently or seldom varying input material: Tietjen hammer mills make wood recycling more efficient.

Our wood hammer mills or grinders can be used in many areas:

  • in the field of energy production (wood shavings, wood pellets)
  • in the construction industry (insulation materials)
  • in animal husbandry (bedding material)
  • in logistics (packaging accessories and cardboard packaging)
  • in food production (stabilisers, filling and release agents).


We understand the requirements and objectives of the wood industry and always have the right wood hammer mill for every wooden input material. We are able to meet every requirement thanks to our four own series and more than 40 model variants. Benefit from our experience in wood crushing, shredding and grinding.

The use of biomass or waste wood as a substitute fuel in coal-fired power plants is gaining enormous importance in the energy transition. You can find out more in our article Waste wood as a substitute fuel and alternative to coal.

Wet and dry

Hammer mills for wood and fibers

Raw materials are cut, torn or crushed to obtain fibres, depending on their use. Product qualities differ according to wood particle size or fibre length. It is often the case that lignin-protected components can only be made accessible for material or energetic utilisation if they have been appropriately crushed.  Tietjen supplies wood hammer mills and complete systems for the processing of husks, stalks, straw or grown wood, whether they are dry or “freshly cut” wet wood with a high water content.

The wide chamber mill W is used in the grinding of fibers and wood with a residual moisture of 60%.

Weitkammermühle W
Tietjen wide chamber wet wood mill (W series)
Weitkammermühle W

For the size reduction of dry wood chips, the high-speed mill of the VDK series can be used.

particle size reduction machine
High speed mill VDK
particle size reduction machine

If it may be a little more, the Tietjen large chamber hammer mills GD and GDL are the right choice.

Hammer mill GD: The powerhouse for maximum performance | screen change during standstill
Large chamber hammer mills
Hammer mill GD: The powerhouse for maximum performance | screen change during standstill
Bild Karsten Frese
Tietjen mill technology in wood processing

“Our W series keeps your costs to a minimum. Our wide-chamber mills crush wet wood into pellets in just a single step.”

Karsten Frese, Sales at Tietjen

Tietjen systems engineering

Benefits of our hammer mills for wood and fibers

Tailor-made wood hammer mill solutions

We configure the requirements for your wood hammer mill together with you and your team. Which raw materials are used? What capacities are to be achieved? Which product characteristics give you an advantage over your competitors? We understand the market and are able to manufacture all system components individually in accordance with your requirements, if necessary.

Innovative grinding technology in the timber industry

Being a specialist in complex digestion systems, we are just as concerned about the crushing as we are about the necessary yield and conveying technology, the fractionation of the ground wood and the separation, including dust explosion protection. We rely on innovative and modern systems engineering for hammer mills.

Quality and systems engineering services throughout the world

We are there for you worldwide and support you in all areas. We work closely with your team and develop bespoke solutions. We support you worldwide in all areas and offer service and maintenance services as well as comprehensive training programs. We ensure smooth production and minimise downtimes with our high level of replacement parts availability.

Wood pellets as climate-neutral fuel
Grinding straw to increase regional energy production
Our partners

In the processing of wood and fibres

Logo Jelu
Logo Jeld Wen

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