Shredders

In each enterprise wood waste is generated, by shredding the economic exploitation of this waste is improved or even made possible in the first place. The compact and reliable wood shredder system of UNTHA has been developed especially for crushing old and residual wood. Whether it is solid wood, chipboard, MDF boards, veneers, etc., the residual wood is efficiently and economically crushed.

Reliability, performance and longevity are the key features of our wood shredders. Another advantage is the warranty. It is 3 years or 2,000 hours of operation.

 Depending on the use case, two different shredding systems are available:

• one-shaft shredders      
One-shaft shredders are very universally applicable and can handle a wide range of different materials. Depending on the model, they are equipped with a sliding system that pushes the material against a rotor with replaceable cutting inserts. An easily removable perforated screen defines the desired granulate size.

• four-Shaft Crushers
Due to their robust construction and high throughput performance the four-shaft shredding technology is used for difficult material, like long solid wood parts,. Due to the special arrangement of the cutting shafts, a pre-and post-crushing is made in only one process step.

With both shredding systems, the same result is always achieved for the different tasks, namely homogeneous, pneumatically or mechanically conveyable granules, which are briquetted or directly fed into the silo for later combustion in the boiler system.

The entry-level model LR 520 is the ideal machine for systems with a residual wood volume of up to 3 m³ per week. The slide-free construction allows a very compact design. For the types LR 630 to 1400, the material is pressed by a hydraulically driven slide (LR 630 horizontal slide, LR 700 to 1400 swivel slide) load-dependent towards the rotor, which is stocked with replaceable cutting inserts, crushing the material against the cutting strips and the perforated screen.

The resulting granulate is either extracted directly (LR 520 to 700) or taken over by a conveyor screw (LR 1000/1400).

At four shaft shredders, the material filled into the hopper is fed into the cutting chamber and, by means of the crushing disks arranged on the four cutting shafts it is crushed against the perforated screen.

The chopped granulate can be exhausted directly or conveyed via a screw.