Hamex® Semi Automatic Hammer Mill

Safely change screens without stopping the rotor

Hamex Hammer Mill with semi automatic sieve change system open
Hammermill semi
Dinnissen hammermill semi
Hamex Hammer Mill with semi automatic sieve change system

The Hamex® Semi Automatic hammer mill runs at a lower speed than the Hamex® hammer mill, namely a maximum of 1800 rpm. However, the tip speed of the hammers has remained the same, so you can achieve a comparable grinding with a lower energy consumption. Thanks to the robust design and the relatively low speed, there is also a minimal noise level. Pleasant for the operator and good for reliability.

The semi-automatic screen exchange system allows you to change screens while the rotor is still rotating. The fact that you don't have to stop the rotor results in a time saving of 10 minutes per screen change! Furthermore, the Hamex® Semi Automatic is also equipped with large inspection hatches that provide quick and easy access for inspection, cleaning and maintenance of the relevant parts.

  • Low energy consumption
  • Minimised noise level
  • Time savings of 10 minutes per screen change

Hamex® hammer mills have been used successfully for decades by manufacturers in various sectors. It is a reliable solution for grinding soft to medium-hard products, such as grains, sugars and minerals with finenesses from 150 microns to approximately 3 mm. All Hamex® hammer mills are designed as follows, for efficiency and reliability:

  • Proven robust construction: guaranteed long life.
  • Good accessibility: wear parts can be replaced quickly.
  • Variable direction of rotation to spread wear.
  • Production, quality control and testing: everything is done in-house.

Hamex Hammer Mill semi inside

How does it work?

See how cleverly placed hammers grind the product

Free-hanging percussion hammers swing around at high speed in the hammer mill. The resulting centrifugal force crushes the grinding material against the special breaking plates in the inside of the grinding chamber. The ground product then leaves the hammer mill through the exchangeable screen. Depending on the properties of the product to be ground, single hammers, double hammers or T-hammers are used.

Do you have questions about the operation of the Hamex® hammer mill? For more information, please contact one of our specialists via [email protected], or call +31 77 467 35 55.

Semi automatic screen exchangement

More efficient, safer and more secure grinding process

Normally, the hammer mill rotor has to come to a stop before the screens can be changed, which can take a long time. This can take a lot of time, especially if you want to change the sieve regularly. To ensure that manufacturers do not have to wait for this, Dinnissen has developed a semi-automatic screen change system.

With the Hamex® Semi Automatic hammer mill, the sieve in its sieve holder is automatically driven out of the machine, after which the operator can quickly exchange or inspect the sieve manually. During this operation, the rotor can continue to rotate, which saves you approximately ten minutes of production time per screen change. That is the time it normally takes for the rotor to come to a standstill. A considerable time saving if you want to change products regularly.

Would you like to know more about semi or fully automatic screen change systems? You can contact our specialists without obligation via [email protected], or call +31 77 467 35 55

Hamex Hammer Mill

System integration: complete process lines

One stop shopping for your entire milling process

Thanks to more than 70 years of experience with industrial processes, Dinnissen is a specialist in the process technology of powders, granules and granulates. From product intake, transport, dosing and weighing, to mixing, grinding, breaking, sieving and packaging. Dinnissen automates, optimizes and innovates your entire production process with tailor-made solutions.

System Integration
Complete milling line

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See all our hammer mills

Hamex Hammer Mill overview

Dinnissen hammer mills are available in various versions: Hamex® hammer mills with manual, semi-automatic or fully automatic screen exchange system, and Dinnox hammer mills, specifically developed for applications in sectors where hygiene is of great importance.

Would you like to learn more about the different Dinnissen hammer mills? View all our hammer mill types here:

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An overview of our grinding and crushing solutions


Milling and crushing various machines

Crushers, crushers, grinders, grinding mills, hammer mills ... In addition to hammer mills, we offer various grinding and breaking machines with which you can achieve the desired grain size.

Would you like to learn more about Dinnissen's solution for grinding & crushing challenges? View the full product overview here.

More Milling & Grinding solutions

Our challenge? 

Optimization of your entire process

At Dinnissen we will be happy to help you automate and innovate your entire process with customized solutions. Dinnissen can add value in every process step. Take a look at our solutions for each step of processing powders, pellets grain and granular materials: