Residual timber utilization

Our reliable industrial wood shredders and wood grinders ensure the production of a homogeneous granulate. This can be used for your in-house wood chip furnace, biogas plant, biomass co-generation plant and the production of wood briquettes. And this reduction in size also reduces your disposal, transport and storage costs. Regardless of how you are planning to use the wood chips, we will configure the wood grinder or chipper for woodworking scrap exactly according to your needs.

We offer a large selection of longevity wood shredders for carpenters, joineries and the wood processing industries, with various working widths, rotor diameters and drive capacities. The wood waste grinders can shred all mixed woodworking waste such as offcuts, veneers, pallets, solid timber, particleboards and MDF boards. The possible granulate sizes usually range from 12 to 80 mm. Regardless of whether you need a compact, small wood shredder or have specific needs with a conveyer system, we will always find the right wood recycling equipment for you!

Metal-free wood chips
All our industrial wood shredders produce a high quality granulate for immediate use in wood chip heating systems or the production of briquettes. Metal parts such as nails, screws, clamps or metal fittings are no problem for the cutting system: The metal is shredded together with the waste wood and can easily be removed by an additional metal separation system or a pipe magnet.

3-year carefree warranty
Capitalize on our reliability! We provide a 3-year or 2,000-hours carefree warranty on all our UNTHA wood shredders, depending on which value is reached first.


The first choice in wood shredders

We have been designing and manufacturing industrial shredders for residual and waste wood for over 40 years. More than 2,000 customers trust in an overall solution by UNTHA when it comes to wood waste shredding. We are happy to organise a visit to a reference facility in your area or a free trial with our wood waste size reduction equipment in our test centre. An excerpt of our successfully realized projects can be found in our reference book wood:


Click here for shredders and chippers for pallets and packaging wood.


You need an offer or would like to talk to one of our experts about your specific use case? Simply make a non-binding request and we will contact you as soon as possible:

Product enquiry


Shredding cap timber or off cuts is quite a challenge for wood grinders. The machine needs to be particularly robust and sturdy. We offer shredding solutions specifically designed for this "very hard" application.

A sturdy and reliable cutting system is required for shredding solid wood waste. We offer wood waste grinders that are tested and proven in processing all types of solid wood. 

Our industrial wood shredders are especially well suited for shredding all types of board materials. Both particle boards and MDF boards are shredded reliably and efficiently. We can always offer a trouble free size reduction solution depending on the board size and the desired throughput rate and granular size.

UNTHA industrila wood grinders are well proven in the shredding of long wood splinters. Thanks to the special cutting unit configuration, the splinters are independently "pulled" into the machine and reliably shredded. Our rotary shears are particularly sturdy and have a long service life.

Shredding pallets with metal inclusions (nails, screws, clamps, ...) are no problem at all for the robust UNTHA cutting unit. After shredding, the metal pieces can be easily removed with a magnet.

We offer customized comprehensive solutions for shredding pallets: From shredding machine and discharge unit to metal separation - all from one source!

When shredding woodworking waste from the wood processing industry, it is very important for the shredding machines to maintain high availability particularly in multi-shift operation. Our wood waste grinders are very reliable and are particularly designed for multi-shift operation. Moreover, the low maintenance requirements further increase availability. 

Shredding thin veneers appears to be very easy at first glance. But correct wood grinder configuration is a decisive factor here. With our spiky shaped pusher infeed system we offer you a customized wood shredding machine especially designed for shredding veneer. 

Two shredding systems are available for shredding bark. Our rotary shears work especially well with wet bark, while our LR single-shaft series is the preferred system for dry and hard bark.

Recommended wood shredders


LR520 wood shredder | UNTHA
Power [kW]: 11
Cutting chamber width [mm]: 514


wood shredder | UNTHA
Power [kW]: 18,5
Cutting chamber width [mm]: 624


Wood shredder | UNTHA
Power [kW]: 22
Cutting chamber width [mm]: 700


Wood shredder | UNTHA
Power [kW]: 37
Cutting chamber width [mm]: 1.000/1.400


RS30-40 Holzzerkleinerer | UNTHA
Power [kW]: 11 - 37
Cutting chamber width [mm]: 450/750/960