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Shredding, Crushing, Granulating

Single-Shaft Shredders by WEIMA

Maximum robustness and the highest precision – WEIMA shredders prove day in and day out to operators all over the world that this balancing act is possible. Whether compact machines that have been sold thousands of times over, such as the WL 4, or huge high-end shredders like the W5.18 – WEIMA shredders work according to the same principle.


  • plastics - classic items such as purge, crates, pallets, pipes, containers, molded parts, and post-consumer waste such as PET bottles or packaging. But also particularly tear-resistant materials such as rubber or films made of BOPP, as well as fabrics and fibers made of aramid, Kevlar or carbon

  • metal - light metals such as aluminum or magnesium, but also with copper, brass and even smaller saw or milling scraps from steel

  • paper and cardboard - waste paper, documents, paper rolls, cardboard, filter paper, labels, books and packaging

  • textiles and fibres - clothing, ropes etc

  • wood - hard and soft woods, old wood, OSB and MDF scraps, veneer, plywood, stairs, doors, and pallets

  • waste and substitute fuel - industrial and commercial waste, municipal waste as well as bulky and household waste


No two applications are alike. But one thing remains: the rotor is the heart of the shredder. It is fitted with cutting blades and, depending on the material and the machine, rotates between 30 and 400 revolutions per minute. There are three types of rotor; F rotor, V rotor and FineCut rotor. 

Cutting Knives

Cutting knives come in many different sizes and shapes. Knife holders are either welded or screwed onto the rotor. The exact setting of the cutting gap between the cutting knife and the counter knife is of particular importance. This is where the actual size reduction takes place – similar to a pair of (very large) scissors.

rotor types WEIMA
Shredder-Animation rotor V

Rotor types

WEIMA cutting knives

Cutting knives


In most cases, single-shaft shredders and granulators are equipped with an electromechanical drive. The power is transmitted by means of a standard motor, a specially developed WEIMA WAP gearbox and a power belt. The speed is adjustable.

• Robust

• Low wear

• Safety coupling protects against damage in case of interfering materials

• Proven and compact design

• Low investment and maintenance costs

• User-friendly maintenance

• WEIMA WAP gearboxes specially developed for size reduction


The ram uses hydraulic pressure to move horizontally forwards and backwards. The movements can be controlled automatically, cyclically, or manually. If required, this is load-dependent. It is precisely guided by brass guide rails or rollers so that it does not jam. A shock valve at the rear end of the slide also absorbs shocks, making the system even more robust.

Siemens Control

Flexible control for changing material flows WEIMA only requires one control panel to precisely control one or more machines including the conveyor system. The built-in Siemens PLC control is optimally adapted to the shredding process. Various slide controls and rotor settings can be conveniently adjusted to the desired application. All control cabinets are designed in-house and built in our German production facilities

WPL 2500 Installed

CEMAC installation of WEIMA PowerLine Shredder


RotorShredder by BHS-Sonthofen

Shreds, separates and isolates materials.  

Impact, shock and shearing forces results in selective size reduction. Particle sizes are selectively reduced, composite materials are separated, brittle-hard materials are finely shredded, metals are exposed and cleaned and entangled materials are separated. 

Simple Tools


  • Multiple hammers mounted one on top of each other on a vertical shaft

  • No need to adjust or sharpen tools due to optimized design



  • Disaggregation of a large number of input materials

  • Possible to influence the intensity and selectivity of feed material processing with adjustable machine parameters

  • Sound investment for the future

Continuous operation


  • Facilitates efficient integration into an end-to-end process

  • Short retention time for feed material in the machine to avoid excessive transfer of heat into the shredded material (e.g., prevents plastics from melting)

Discharge of large parts


  • Separate discharge of large individual parts that cannot be shredded thanks to automatic slide feed

Low maintenance requirements


  • Excellent access to interior of machine through two large doors

  • Easy to replace screwed-on wear parts



  • Optional large flywheel available

  • Automatic handling of short-term mechanical or electrical load peaks

  • Avoids spikes in power use and large costs associated with this

Applications; Electrical, slag, metals

Rotorschredder drawing BHS Sonthofen
Rotorshredder by BHS Sonthofen

Universal Shredder by BHS-Sonthofen

High speed single-shaft machine designed for pre and post cutting. It shreds loaded material to a size between 10 and 120mm.

  • Quick and simple screen replacement for changing protection classes of shred material

  • Precision made blades that are easy to adjust and replace

  • V-belt drive with wide rotational speed range of 80 to 240 RPM

  • Automatic shutdown if impurities are detected

  • Continuous material supply thanks to load-dependent push-in unit

  • Minimal downtime – easy to remove impurities, stocked spare parts, short maintenance times

  • Low processing costs per metric tonne

Applications; Cables, plastics, file and data destruction.

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