M&J PreShred Series pre-shredders

M&J PreShred Series pre-shredders

Stationary and mobile pre-shredders for waste processing

M&J PreShred Series pre-shredders are efficient waste processing machines used in waste recycling and waste processing applications. They can reduce various types of solid waste from municipal solid waste to industrial, commercial and bulky waste to a uniform shape resulting in more efficient usage, sorting or transportation of waste materials.

Excellent uptime

An open cutting table. Bi-directional shredding system. Wear resistant materials. Easy maintenance.

Intelligent performance 

Self-feeding. No need for a pusher. Readjusts according to the feed material.

Advanced design

Modular construction. Large cutting table. Aggressive heavy-duty knife assembly. Designed to need less energy to operate.

Versatile applications

Can be tailored and adjusted to produce the required grain size of any solid waste material.

Multi-functional M&J PreShred Series pre-shredders

M&J PreShredder Series pre-shredders are designed to meet the special needs of waste recyclers and waste processors who handle materials that vary in size and composition or may contain unknown quantities of steel, stones, concrete or other hard materials.

The product family consists of both stationary and mobile pre-shredders with different specifications and features. Different models can be distinguished by naming conventions, "S" denoting "stationary" model and "M" meaning "mobile" version. The larger the machine is in physical size and potential capacity, the bigger model number it has (e.g M&J Preshred 2000S vs. M&J Preshred 4000S).   

M&J PreShredder Series pre-shredders can process 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. They are often utilized in refuse-derived fuel (RDF) production, biomass processing, waste-to-energy plants (WtE), and in mechanical biological treatment plants (MBT).

Excellent uptime 

All M&J PreShredder Series pre-shredders feature an open cutting table allowing stones and other hard particles, like metals, to fall through the cutting area. The open cutting table design and bi-directional shredding system increase safety and reduce risk of malfunctions that hinder operations.

The knives and wear-exposed parts of M&J PreShredder Series pre-shredders are made from wear resistant steel, ensuring continuous and long-lasting performance. Bolts and bearings are conveniently mounted away from the cutting area, allowing for easy access and maintenance to reduce costly downtime. 

Intelligent performance

M&J PreShredder Series pre-shredders can be adjusted to any waste processing requirements.

The shredders have a bi-directional knife assembly which runs both clockwise and counterclockwise with equal speed and torque. This feature allows changing the rotation direction when challenging materials are encountered, enabling self-feeding and eliminating the need for a pusher.

M&J PreShredder Series pre-shredders are equipped an intelligent control unit that automatically adjusts shredding routines to processed material characteristics. The control unit has 6 standard programs and 2 custom programs, which permit the creation of tailored shredding routines for maximized performance.

Advanced design

M&J PreShredder Series pre-shredders are constructed modularly. The chassis, conveyor and oil coolers can be adapted to meet individual requirements in either new or existing plants.

All the models have a large cutting table and an aggressive heavy-duty knife assembly. The robust frame is designed to require less power to operate, minimizing energy consumption without sacrificing output.

Versatile applications

M&J PreShredder Series pre-shredders are excellent solutions even for the most challenging materials.

Many different assembly possibilities, ranging from different knife shapes to the number of knives, enable tailoring and adjusting the pre-shredders to produce the required grain size of any solid waste material.



Stationary pre-shredders

The shredding technology of M&J PreShred Series stationary pre-shredders is based on aggressive knife designs and open cutting tables.

These distinct technical features provide outstanding performance when dealing with mixed and challenging materials.

M&J PreShred Series stationary pre-shredders are extremely resistant to wear caused by waste materials normally considered as non-shreddable, such as solid steel, reinforced concrete, and rocks. 

Mobile pre-shredders

M&J PreShredder Series mobile pre-shredders utilize the same shreddig technology as the stationary pre-shredders. 

Different models are either track-mounted (on crawlers) or wheel-mounted (on trailer). 

Mobile pre-shredders as as efficient as stationary ones, but thanks to the undercarriage, they are easily transportable at a production site or between sites.

M&J PreShred Series pre-shredders' technical specifications

Stationary pre-shredders

Mobile pre-shredders

Stationary pre-shredders
Mobile pre-shredders
How others have improved profitability and reduced risks?
M&J PreShred Series pre-shredder parts and services

M&J PreShred Series pre-shredder spare parts and wear parts

Original equipment replacement M&J PreShred Series pre-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 M&J PreShred Series pre-shredders

Our service team consists of experts with extensive know-how in improving the performance of your M&J PreShred Series pre-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 M&J PreShred Series pre-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