Your advantages at a glance
- For particularly difficult applications
- Very compact and rugged design
- High availability and process stability
- Low noise and dust emissions

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RS50-100 Industrial shredder

Industrial shredders for difficult recycling applications

This industrial shredder has been tried and tested under difficult conditions is characterized by very high reliability, ability to handle non-shreddable extraneous materials as well as a very broad application range. Its sturdy design and the strong, resistant cutting unit is particularly well suited for continuous multi-shift operations.

Customized size reduction solutions

We offer a large selection of slow-speed four-shaft shredders especially for difficult recycling applications with a consistent particle size range from 15 to 100 mm in a single pass. Thanks to the modular design and the various cutting unit configurations these shredding machines are particularly flexible in their use. Moreover, it is possible to adjust speed, torque, sealings, cutting unit openings and perforated screens exactly to your requirements. This ensures highest flexibility with maximum reliability.

In contrast to high-speed systems, these slow-speed industrial shredders are particularly resistant to foreign objects. If a cutting disc detects a foreign object, the machine stops immediately. This prevents damage to the cutting unit. In addition, the drive permits frequent reversing, which is particularly beneficial when shredding problematic materials. The integrated perforated screen quick replacement system that comes standard permits the quick and efficient replacement of the perforated screen.

The shredding machines can also be equipped with additional separating and conveyor technology, customized hoppers and substructures and control expansions. We offer comprehensive solutions from one source!

Customer Service for maximum reliability

For us, reliable customer support is a key priority. All of our shredders are supplied with a professional customer support service


We have been designing and manufacturing industrial shredders for all kind of materials for over 40 years. More than 9,000 customers trust in an overall solution by UNTHA when it comes to size reduction. We are happy to organise a visit to a reference facility in your area or a free trial with our size reduction equipment in our test centre.


Medium-sized RS-class applications:

  • Aluminium profiles
  • Dashboards
  • Automobile interior lining
  • Bank notes
  • Batteries
  • Organic waste
  • Tin cans
  • Electronic scrap
  • Electric stoves
  • Eternit boards
  • Spring mattresses
  • Plastic films
  • Dishwashers
  • Gypsum boards
  • Green waste
  • Rubber waste
  • Cardboard boxes
  • Cardboard tubes
  • Plastic containers
  • Plastic drums
  • Refrigerators
  • Metals
  • Metal shavings
  • Metal drums
  • Medical waste
  • Rubbish bins
  • Oil filters
  • Paper
  • Paper reject
  • Plastic bottles
  • Production waste
  • Radioactive waste
  • Shredder light fraction
  • Hazardous waste
  • Punching scrap
  • Car bumpers
  • Carpeting
  • Tetra Paks
  • Textiles
  • Packing material
  • Workshop waste
  • ...


Do you need a little more capacity? 
To the RS150

More details available below in the downloads section!

Four-shaft shredding system

As the inventor of the four-shaft cutting system (patent no. 319535), we have kept developing these products and continually adapted them to fit market needs. Due to their sturdy design and high productivity, four-shaft shredders are used for materials that are difficult to shred. Thanks to the special layout of the cutting shafts, the pre- and re-shredding occurs in just one process step.

Test center

TIP: Free field test at the UNTHA test center

Do you want to be 100% certain that we will configure the optimal shredding system tailored exactly to your application case and material? No problem! We will be happy to help you test your material in our facilities under real-life conditions!

Test centre


We are also happy to provide infeed and discharge conveyor belts. These will be optimally adapted to the on-site conditions and the desired throughput performance of the industrial shredder.

A ram device supports the industrial shredder when processing bulky material. At the same time the ram device increases the machine's throughput.

The central lubrication system supplies all important bearing points with sufficient lubricant which results in a considerable reduction of maintenance effort for the operating personnel and of machine downtimes.

We are able to adapt the hopper exactly to your needs depending on the infeed. Regardless of whether you need a particularly wide hopper for a wheel bearing infeed or a hopper with flip-top lid. We offer customized solutions.