Metal shredding | © UNTHA shredding technology GmbH


Metal shredding is a necessary step in the recycling process, independent of whether your scrap metal comes from the metal-processing industry, the automotive industry, the electrical industry or the waste industry. Whatever your needs, we have the right shredding system for your recyclable materials!

Scrap steel against climate change

Recycling steel doesn’t just save billions in environment- and climate-related costs: Replacing the primary material with scrap saves millions of tonnes of CO2 emissions. This is not reflected in the price yet, but in future, consumers and politicians should be given the clear message that scrap minimises the use of raw materials, reduces environment-related costs and thus actively contributes towards climate protection.

What shredders are best suited for shredding metal?

There is no general answer to this question, as not every metal is the same. The right shredder will therefore depend on the shape, hardness and ultimate purpose of the metal recycling process. From reducing the metal volume in order to facilitate further processing in the smelting works to improved separation of varying metals and composites, we will always analyse your requirements together with you and determine the right unit with regard to input material, throughput and desired size of the granulate. The question of whether a single-shaft or four-shaft shredder is the best choice for your material also needs to be addressed.

Single-phase shredding of metal

The stationary or the mobile XR shredder is particularly suitable for the single-phase processing of metals and scraps. Minimum operating costs combined with maximum performance make the shredders of the XR series powerful partners for metal recycling. The single-phase shredding process makes this unit particularly efficient and economical to operate.

Your benefits when using the XR shredder

  • Lower transportation costs thanks to increased bulk density of the material
  • Perfect preparation for further processing thanks to defined fraction size
  • Excellent material breakdown for a high degree of purity
  • Straightforward processing of different types of metal
  • High level of plant availability as the cutting chamber is easy to clean before the input material is changed
  • Low energy cost and minimal noise and dust emissions thanks to UNTHA Eco Power Drive


Still not convinced of the benefits of the XR shredders? Then test one with your metal scrap directly at your facility.

Ask for a trial run now.

Metal- and scrap-shredding with a four-shaft shredder for defined grain size

A four-shaft metal shredder is used when defined and homogeneous granulate sizes of less than 8 in (200 mm) are required. Depending on the individual model, the four-shaft shredders of the RS series are used for metal turning and milling chips, for breaking down compound products, for shredding rejects, separating precious metals, scrap aluminium and light scrap steel.   

Thanks to its compact design, the unit is easy to integrate into existing plants.


What materials may be shredded on a single unit?

Wear and tear of the cutting system is particularly important when it comes to shredding scrap – the harder the metal, the more pronounced the wear and tear.  In principle, light metals as well as harder metals up to a certain wall thickness may be shredded efficiently.  This includes metals and alloys such as:

  • Aluminium
  • Magnesium
  • Al-Mg alloys
  • Copper
  • Nickel
  • Iron
  • Zirconium
  • Titanium
  • Steel plates up to a maximum thickness of 2mm

Complete enquiry


Sheet metal waste is a valuable resource! Ideally, it is shredded by our sturdy rotary shears and recycled. Capitalize on our large selection of different shredding machines. We will always provide you with customized size reduchtiov systems that are optimized for your needs.

Metal drums – whole, compressed, full or empty – UNTHA shredders can handle the job. Our tough and reliable low-speed shredders are built to last.

Metal bands, wires, and cables are a special challenge for shredding machines. Not every shredder is capable of meeting this challenge. UNTHA rotary shears are especially sturdy and were designed specifically for difficult applications.

Die casting sprues can be shredded right at the machine or at centralized location. Shredding saves transport and storage costs. UNTHA can provide a shredding system that is configured for your specific application.

The material must be pre-shredded to be able to efficiently recycle aluminum waste into high-quality castings and wrought alloy.

We offer reliable and powerful aluminum can shredder as well as recycling solutions that are well suited for pre-shredding aluminum waste.

Metal turnings, bands, wires, and cables are a special challenge for shredders. Not every shredding machine is capable of meeting this challenge.

Our metal turnings shredders are especially sturdy and were designed specifically for these difficult applications.

Punching scrap is tough material to shred. You will need a tough and reliable shredder for long life and economical operation. UNTHA’s four shaft shear shredders have proven themselves through years of service in this application.

Recommended metal shredders

XR mobil-e

Power: 113 - 264 kW | 152 - 354 hp
Cutting chamber width: 2,960 mm | 116.5 in


 Stationary waste shredder SRF RDF | XR3000
Power: 65 - 264 kW | 87 - 354 hp
Cutting chamber width: 1,960 / 2,960 mm | 77 / 116.5 in


RS150 heavy duty industrial shredder  | UNTHA
Power: 180 - 312 kW | 240 - 420 hp
Cutting chamber width: 1,500 mm | 59 in


RS30-40 Shredder
Power: 11 - 44 kW | up to 60 hp
Cutting chamber width: 450 / 750 / 1000 mm | 18 / 30 / 39 in


Power: 7,5 kW | 12 hp
Cutting chamber width: 430 mm | 17 in


Power: 88 kW | 140/177 hp
Cutting chamber width: 1.378 mm | 54 in