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Single Shaft  Plastic Shredders

To be able to offer our customers a very specific solution made it necessary to extend our machine range. The 4-shaft shredders are not always the most economical machines and cannot fulfill the requirements nowadays for all sorts of materials technicalwise. It was therefore one of our priorities to design a new concept to strengthen out competiveness on the market

Grinding of massive Pe Pa lumbs <0,6 x 0,5 x 0,5 m

Grinding of foils down to sizes of 22mm and below

Grinding of large cardbox material

Grinding of foil rolls up to 0,5 diam.

Grinding of big bags

Grinding of carpetrolls up to 0,5 diam.

Grinding of passenger car instrument panels and door covers



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Model Motor Size Hopper Opening
LRK-1000-22 30 HP 39"" x 42"
LRK-1000-30 40 HP 39" x 42"
LRK-1000-44 2 @ 30 HP 39" x 42"
LRK-1400-30 40 HP 55" x 42"
LRK-1400-44 2 @ 30 HP 55" x 42"
The Design
The design principle of the LRK machin e is almost identical to the LR machine, however the main frame had been essentially reinforced for industrial applications. It was obvious from the beginning on that they LRK machines will be used in many different fields, therefore two different cuttin gsystems had been developed.

To increase the efficiency on a single shaft shredder makes it necessary to adapt the cutting system to the input material. This is similar to the 4 shaft shredder where different cutting blades are available to meet the requirements.

Most of the other single shaft shredder manufacturers have only one system available with some minor variations in number and size of the cutters. Our new concept consists of two different cutting systems to gain significant higher capacities at most of the materials.

System: USS Rotor
Milling action of the rotor, each revolution creates overlapping and consequently some advance. Inclinded to improve the material flow with less power efforts. With all 4 edges flattened, moving in a circular motion along with inner suface of the screen to increase the wear resisitance and the efficiency. Other manufacturers: sharp edges with just one line moving along the screen surface

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System: SKS Rotor
The goal was to develope a rotor special design to prevent winding of material around the rotor (especially foils). The new chamber rotor with the adjacent chamger bars clears the material off from the rotor. Carpet and big bag grinding where our competitors still have significant problems is now possible. The output material is of uniform size due to the precise cutting sequence in the chamber, the material escapes easily through the screen holes.

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Rotor Cooling System
Cooling of the rotor is necessary when following materials are continoulsy grinded.

- PVC soft melting point < 80 degrees Celcius
- Stretch foils LDPE thickness < 0,7 m melting
  point < 110 degrees Celcius
- PE foils metling < 110 degrees Ceclius
- Carpets
- Big Bags

For following materials rotor cooling is not required

- Plastic lumbs
- Plastic Containers
- Foils melting point < 110 degrees Celcius
- Yellow bag
- Automotive door covers and instrument


Why rotor cooling?
High rotor temperature will cause thermal expansion of the rotor. The gap between the cutting knives and cutting bars will be therefore consequently altered.

Why have not all of the 1 shaft shredder manufacturers implemented rotor-cooling systems?
As more precise the gap between cutting knives and cutting bars, as greater the capacity of the shredder will be. Some of our competitors machien shave wider gaps between the cutting tools, this however will decrease the capacity of the machines.

Functional description of the rotor cooling system:
Special cooling fluid is continously pumped into the rotor. The fluid is then returned to the reservoir via the cooling device. Heat will be therefore evacuated from the rotor. The fluid consists of 70% water and 30% glycol to prevent corrosion.