Our hammer mills

Dinnissen hammer mills are available in various designs: Hamex® Hammer Mills, with a semi-automatic or fully automatic sifter change system, and Dinnox Hammer Mills, specifically developed for applications in sectors where hygiene is extremely important.

Hamex Hammer Mill semi inside

Operation of hammer mills

In the hammer mill, freely suspended hammers swing around at high speed. The resulting centrifugal force crushes the material against the special crushing plates in the interior of the grinding chamber. The product to be ground is fed to the hammer mill in doses, via a feed device with an integrated magnetic system and a heavy parts separator. This prevents contamination in the mill. In the mill, hammers attached to the rotor rotate at high speed and crush the product into pieces. The product that gets fine enough during the process leaves the grinding chamber through the sifter plate. Here, the particle size of the ground product is determined by the speed of the hammers and the mesh openings in the sifting plate. The following are particularly important for the grind fineness to be achieved:

  • The hammers
  • The sifter
  • The properties of the raw materials to be ground

Depending on the properties of the product to be ground, single hammers, double hammers, or T-hammers are used. The effectiveness of the hammers is determined in particular by the following:

  • The number of hammers
  • The geometry of the hammers
  • The distance between the hammers
  • The distance between the hammers and the sifting plate
  • The speed of the rotor and consequently the speed of the hammers

Hammer mills from Dinnissen are used particularly in the food, pet food, and feed industries, but they are also used in entirely different industries such as recycling and chemicals. This is because of the highly efficient grinding process, high reliability and safety, and very low noise level. Applications are generally soft to medium hard materials; the fineness of grind is normally in the range of 0.1 - 1 mm.

MORE INFO ON THE OPERATION OF HAMMER MILLS

More information about our hammer mills?

Download our brochure or the datasheet with all options, models and measurements. Or freely contact one of our experts.

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Robert Michels is ready
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+31 (0)77 467 35 55
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Solutions for your entire process

System integrator Dinnissen optimizes and innovates your production process with tailored solutions: developed, manufactured and tested in-house. From product intake, transport, dosing and weighing, mixing, grinding, sieving and packaging to full automation and control. We maximize the performance and efficiency of your entire process.

view our machines, systems and process lines

Dinnissen wallpaper big bag
  1. System Integration
  2. Intake & Emptying
  3. Conveying & Handling
  4. Feeding & Weighing
  5. Mixing & Processing
  6. Milling & Grinding
  7. Sifting & Screening
  8. Packaging & Filling
  9. Automation & Control

We are proud that these companies rely on Dinnissen

Nestle
Nutreco
DSM
Danone
BAYER

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What customers say about us

The importance of hygiene and safety requirements

Dinnissen fully understood the importance of hygiene and safety requirements in our industry. They went the extra mile by providing us with all the necessary documentation, all ATEX drawings, and full traceability.

DSM

Anton Vleeshouwers- Project Director - DSM

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Quadrupled production capacity

In collaboration with Dinnissen, we have quadrupled our production capacity from 3 to 12 tons per hour.

Solan

Harald Schmalwieser- Managing Director - Solan

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Fully automated sampling

We considered several machine developers, but the high quality of the Dinnissen machines and the competence and commitment of the employees were decisive for us.

Ausnutria

Arjan van Dijk- Project Manager - Ausnutria

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Drastically improved feed-quality

90% of our customers with laying hens have already switched to the new feed produced using the Pegasus® mixer and the Thermidor® system.

Egli Mühlen

Kurt Egli- Former manager - Egli Mühlen

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Mixing time of 60 seconds per batch

Previously, we had standard times in the mixing process of 14 - 15 minutes. With the Pegasus® mixer we achieve a mixing time of 60 seconds per batch.

Planta

Lothar Pixa- Director - Planta

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Unique in preliminary work

What really makes Dinnissen unique, is the preliminary work. You can literally count every bolt and nut in the drawing.

AAK

Kenneth Gijzen- Maintenance & Engineering Manager - AAK Rotterdam

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Flexibility, cleaning, short mixing time, and a homogeneous end product

We also considered other options but on the points we considered most important - flexibility, cleaning, short mixing time, and a homogeneous end product - Dinnissen scored best.

Nutri Dynamics

Sam Dimassi- Owner - Nutri-Dynamics

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Mixers have been running 30 years

Dinnissen machines may not be the cheapest in terms of purchase price, but in terms of value for money, there are none better. Our Dinnissen mixer has been running extremely reliably for 30 years.

VDV Group

Adwin van der Vorst- Directeur - VDV Group

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Technicians, not salespeople

Dinnissen's representatives strive for the best solutions. They are engineers first and salespeople second.

Van Zutven

Frans van Zutven- Founder and Director - Van Zutven

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High-quality vacuum coaters

We chose to work with Dinnissen because they supply high-quality vacuum coaters that fit exactly within our production lines.

Olam Group

Arnold Balledux- Global Technical Head Animal Feeds & Vice-president Animal Feed & Protein - Olam Agri

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Six-fold increase of total production

Production has gone from 3-5 tons per day to 30 tons per day. That's a six-fold increase in total production.

Nöll & Co.

Michiel de Boer- CEO - Nöll & Co.

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No challenge is too big

At Dinnissen, they think in terms of challenges, not problems. They don't give up and keep going until there is a solution that satisfies all parties.

United Petfood

Martin Sonneveld- Production Director - United Petfood Waalwijk

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Collaboration based on mutual respect

Our collaboration with Dinnissen is based on mutual respect and trust. We challenge each other to continuously innovate and improve

Vitelia

Stefan Kuijpers- Director - Vitelia

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Didn't consider any other option than Dinnissen

When the mixers needed replacement and Dinnissen could do a one-on-one replacement, we really didn't consider any other option than Dinnissen.

Voergroep Zuid

Elmar Flach- Technical Specialist - Voergroep Zuid

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Customized mixers

Dinnissen thought along with us from start to finish. For example, they used existing drawings for these new mixers to save us costs in the engineering phase.

ForFarmers

Pieter Gorter- Project Manager - ForFarmers

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Tailor-made solution for every problem

What charmed us most about Dinnissen was that they responded perfectly to our questions each time: they jumped right in and quickly came up with a tailor-made solution to each problem.

Perstorp

Jos Falvay- Project manager - Perstorp

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Service on weekends

One day there was an important issue and one of Dinnissen's engineers immediately took action during the weekend. I have never seen other foreign partners do this.

APTe Japan

Mr. Kimio Aono- Founder - APTe Japan

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Increased capacity despite using 17 fewer mixers

The amazing part is that we managed to increase the capacity, despite using 17 fewer mixers.

Holland Diervoeders

Edward Depre- Project Manager - Group Depre

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Easily and safely changing sieve basket

The ease and safety with which the sieve basket can be changed were decisive factors in our choice for a Dinnissen sifting machine.

Sudstaerke

Mr. Kreuzer- Company Manager - Südstärke

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Process specialists unafraid to push boundaries

Dinnissen possesses expertise distinct from our in-house capabilities. They are process specialists unafraid to push boundaries and set limits.

MiFood

Raymond Nolet- Founder - MiFood

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Supplied entire installation

Dinnissen is the first company we've worked with that delivers a total package. Because Dinnissen supplied the entire installation, including platforms and safety installations, the entire line is CE-certified.

Steinweg

Michel Kliphuis- Manager - Steinweg Amsterdam

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Choice based on trust, feeling, and price

We made a choice based on trust, feeling, and price. In this total package, Dinnissen came out best.

Vobra

Marcel van den Oetelaar- Proces Technologist - Vobra

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World player in process technology

To realize production processes of the best quality, we work closely with Dinnissen: One of the strongest players in the world in process technology and hygienic design.

Nestle

Gerben Koopmans- Project Engineering Manager - Nestlé

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Filled three complete factories

Dinnissen has filled an entire factory for us with a complete production line, on three different occasions. They just get it right: from mixers and sifters to sampling and automation.

Jonker & Schut

Erik Schut- Managing Director - Jonker & Schut

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