Wood waste

Our reliable wood shredders ensure the production of consistently sized fuel for your in-house wood chip furnace, biogas plant, or biomass co-generation plant, and also for briquetting. Regardless of how you are planning to use the wood chips, we can configure the shredder to meet your exact needs.

We offer a large selection of wood shredders and grinders with various working widths, rotor diameters and power levels for all woodworking applications. Granulate sizes usually range from  ½ inch to 3 inches. Regardless of whether you need a compact, small system or need to shred large volumes, we will always find the right wood shredding solution for you!

Capitalize on our reliability! We provide a 3 year* warranty on all our UNTHA wood shredders!

 *) or 2,000 hours, whichever is reached first.


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Shredding cap timber is quite a challenge for shredding machines. 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. We offer shredding machines that are tested and proven in processing all types of solid wood.

Our 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 suitable solution depending on the board size and the desired throughput rate and particle size.

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

Shredding pallets with metal inclusions (nails, screws, etc.) 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 a shredder and discharge auger to metal separation - all from one source.

When shredding production waste, it is very important for the shredding machines to maintain high availability particularly in multi-shift operation. Our shredders 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 the correct machine configuration is a decisive factor here. With our optional profiled ram face spiky shaped pusher, UNTHA shredders are perfect 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 and grinders


Power [kW]: 11 | (18 hp)
Cutting chamber width [mm]: 514 | (20 in)


Power [kW]: 18,5 | (up to 30 hp)
Cutting chamber width [mm]: 624 | (25 in)


LR700 Holzzerkleinerer | UNTHA
Power [kW]: 22 | (up to 35 hp)
Cutting chamber width [mm]: 700 | (27 in)


Power [kW]: 37 | (up to 60 hp)
Cutting chamber width [mm]: 1.000/1.400 | (39/55 in)


Power [kW]: 55-180 | 74 - 241 (hp)
Cutting chamber width [mm]: 1700-2100 | 67 - 82 (in)


RS30-40 Holzzerkleinerer | UNTHA
Power [kW]: 11 - 37 | (up to 60 hp)
Cutting chamber width [mm]: 450/750/960 | (18/30/38 in)