Waste shredders

Waste shredders

For more efficient waste processing

Waste shredders are machines utilized in recycling and waste processing applications. They can reduce various waste materials that differ in dimensions, sort, weight and composition to uniform shape and size for more efficient processing, storing and transportation. Waste shredders are available as stationary and mobile versions.

Process multiple materials

Bulky waste, commercial and industrial waste, municipal solid waste, construction and demolition waste, biomass, wood, baled materials.

Diverse applications

Refuse-derived fuel (RDF) production, biomass processing, waste-to-energy plants (WtE), mechanical biological treatment plants (MBT).


Sizes and capacities range from small to large depending on the requirements. Stationary or mobile.


Reduce the pre-processed waste to even more precise and uniform shape.

Reliable waste shredders for various materials and applications

Waste shredders are designed for processing different solid waste materials. Many are in use in applications such as refuse-derived fuel (RDF) production, biomass processing, waste-to-energy plants (WtE), and in mechanical biological treatment plants (MBT).

Waste shredders can reduce the size of multiple waste types such as bulky waste, commercial and industrial waste, municipal solid waste, construction and demolition waste, biomass, wood, as well as baled materials.

Metso’s waste shredder range consists of pre-shredders and fine shredders. Pre-shredders are available as stationary and mobile versions, fine-shredders as stationary versions.


Pre-shredders are engineered for the first mechanical stage of the waste recycling process. They can take in all kinds of waste in various shapes and sizes and reduce the material to smaller and uniform size for easier sorting, storing or transportation.

Stationary pre-shredders

Stationary pre-shredders are the optimal choice in applications where mobility of equipment is not required. Metso’s stationary pre-shredders range is divided into two different product families according to size. M&J K-Series pre-shredders are smaller in size and capacity, while M&J PreShred Series pre-shredders are larger in physical size and have higher throughput.

Mobile pre-shredders

Mobile pre-shredders are equipped with the same shredding units as stationary pre-shredders. However, different mobile pre-shredder models are built either on crawlers or a trailer, which makes them easy to move at a production site or transport between sites when needed.


Fine-shredders are reliable and efficient recycling machines that are designed to reduce the pre-processed waste to even more precise size and shape. Fine-shredders are always stationary and highly suitable especially for the refuse-derived fuel (RDF) production but can also process other recyclable materials effectively.



Waste shredders product range


Engineered for the first reduction stage of the waste recycling process.

Mobile pre-shredders

On crawlers or on a trailer. Easity move at the production site or between sites. 


Designed to reduce the pre-processed waste to even more precise size and shape.

Waste shredders increase output and cut costs in many applications

Biomass power plants and biomass production

Biomass is an organic energy source that can be anything from forestry to agricultural residues. It is an attractive fuel for operators of incineration facilities who are keen to reduce their overall carbon emissions.

Waste shredders are commonly used to improve the quality of biomass – to make the organic fuel consistent and optimal in size and shape for maximal energy production.

Refuse-derived fuel production

Waste is a potential source of energy for various manufacturing and processing plants. Refuse-derived fuel (RDF) is a solid fuel that can be combusted to generate energy. RDF is made from mixed waste, and it is a common energy source for example in Waste-to-Energy plants (WtE), gasification plants and cement kilns.

Waste shredders are often utilized RDF production to reduce the mixed waste to a homogenous size and shape that improves combustion and maximizes the energy output from the waste fuel.

Waste-to-Energy plants

As the name suggests, Waste-to-Energy plants (WtE) use waste as the main energy source. The waste fuel can be produced from almost any type of waste like bulky waste, municipal solid waste, commercial and industrial waste, wood, construction and demolition waste, biomass, or baled materials like straw.

In WtE plants waste shredders are used to reduce the mixed waste to an optimal grain size and to generate a consistent flow for maximized energy output by incineration.

Recycling centres and transfer stations

Like most materials, waste is usually expensive to transport. By nature, residue, garbage and leavings are often awkwardly sized and heavy, which makes it difficult to pack the waste tightly. Bulky objects require more space and increase transportation costs. Due to this reason, recycling centres and transfer stations are normally located as close as waste collection points as it is regulatory possible.

Waste shredders are often used in these facilities to reduce the collected waste to a homogenous and manageable size. Smaller-sized waste can then be transported in larger volumes to other locations which makes relocating easier and reduces transportation costs.

Mechanical Biological Treatment

Mechanical Biological Treatment (MBT) facility is a waste processing plant that combines sorting and biological treatment like digestion and composting. Three most common outputs of an MBT plant are recyclables like plastics and metals, materials used for land reclamation, and waste fuels like refuse-derived fuel.

In MBT plants, waste shredders reduce the mixed waste to a homogenous and manageable size that is easier to sort, digest and compost. Thanks to shredding, both the mechanical and biological processes are more efficient, resulting in increased profitability.

How others have improved profitability and reduced risks?
Waste shredder parts and services

Waste shredder spare parts and wear parts

Original equipment replacement waste shredder parts ensure proper fit, form and function to reduce maintenance issues and increase longevity.

If your equipment fails, productivity of your entire plant is at risk. To avoid such losses, critical replacement parts are readily available when you need them.

Our global distribution logistics network ensure that Metso OEM spare and wear parts are available when you need them.

Spare parts

  • Conveyor parts
  • Coolers
  • Gears
  • Guards
  • Hydraulic parts
  • Motors
  • Sensors
  • Pumps
  • Valves

Wear parts

  • Bearings
  • Cutting tables
  • Filters
  • Fittings
  • Grease
  • Hoses
  • Oil
  • Shafts
  • Wear plates

Services for waste shredders

Our service team consists of experts with extensive know-how in improving the performance of your waste shredder and the whole recycling process.

We solve all kinds of service needs at short notice – either as separate tasks or as part of a fixed service agreement. These services include for example emergency services, repairs, preventive maintenance, refurbishments, upgrades, process optimization, relocation services, and training.  

Service agreement

As a customer, you are not required to have a continuous service agreement. However, it tends to reduce risks, simplify maintenance actions, improve equipment and process performance, as well as save time and money.

  • Your equipment will be looked after and taken care of by certified staff
  • You will minimize disruptive downtime and lost income
  • You will cut down on your energy costs
  • You will gain access to the latest updates and improvements
  • You will constantly be aware of your maintenance costs

Continuous service agreement enables significantly better return on investment on your waste shredder and fewer unwelcome surprises to disrupt production.

Global network, local presence

Good service is about being there when you most need it. Metso has subsidiaries and agents around the world. Our service experts are ready to react quickly and come to your production site whenever required.

Contact Metso experts