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The Ultratrieur is an indented separator that separates grain and other granular products according to their length. It is used for cleaning, grading, seed processing and conditioning industrial products. It comes in a modular design.

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Key benefits

Modular design – build a machine to match your products

Choose from many different configurations to obtain the number and quality of fractions with various sizes, depending on your needs. We offer a wide range of modules to handle many different products.

Precise grading results

You can adjust the trough to the level of cleaning you need. Choose from a range of indented cylinders to match your product. You can also add an optional post-separation process for even higher-quality cleaning and grading.

Proven technology

We have installed more than 2500 Ultratrieur grading machines in processing plants worldwide.

Highlight features

High-quality separating

Seamless adjustment of the trough

We have designed the trough for easy adjustment. To set the grading for each product, simply turn the control element manually directly at the machine.


Designed for top food safety and a clean plant

The enclosed design and the aspiration vent both help to reduce dust emissions and improve sanitation in your processing plant.

Optional hardened indented cylinders

Save up to 30% in costs

You may fit your grading machine with optionally available hardened indented cylinders. These have roughly twice the service life of conventional cylinders. They help to increase the efficiency of your cleaning and can save up to 30% in costs.

The Ultratrieur has an opening with a plastic flap so you can take samples at any time.

Key topics

Billions of people come into contact with Bühler technologies to cover their basic needs for food and mobility every day. Our motto is creating “innovations for a better world.” Find out more about our key topics.

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