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The popular WL 4 grinder from WEIMA is used thousands of times worldwide in woodworking and processing companies, and has been continuously improved over three decades. At the long-awaited LIGNA 2023 trade fair, the shredding specialist will give the long-running machine a comprehensive technical update including modern design features. Together with the compact C 150 briquette press, the focus will be on sustainable energy generation.

Companies wanting to make optimal use of residual wood and recycle it sustainably can not do so without first shredding and compacting. For more than 40 years, WEIMA has been offering the appropriate machine solutions including conveyor technology as a complete package from a single source.

The proven single-shaft shredders are part of the basic equipment for many joineries and carpentries, furniture and interior designers, roofers, woodworkers, sawmills and, of course, the wood industry.

The best-known shredder is likely the WL 4, which has a working width of 600mm with a rotor made of solid material, a manually changeable perforated screen to define the chip size, and a generous feed hopper with free-cutting function to prevent material bridging.

In addition, a gearbox specially developed by WEIMA ensures maximum availability and protects against unexpected shocks and vibrations caused by interfering materials. All this makes it ideal for small to medium throughput volumes. Thanks to its compact design, the grinder can be placed directly next to a machining centre if required.

Ready for the future

At WEIMA, the attributes of durability and robustness are paramount. To ensure that the WL 4 remains well equipped for the future, the company has comprehensively revised the shredder’s technology for LIGNA 2023. The machine’s new base frame now features a significantly more robust design. This reinforcement is noticeable in applications such as multiplex, for example, and in addition, vibrations have also been reduced to a minimum.

Another innovation is the maintenance-free V-belt. The electromechanical drive will operate with even less wear in future, which reduces maintenance costs. In order to increase energy efficiency, WEIMA has also improved the hydraulic unit – protected inside the machine – as well as optimising the PLC control unit.

Wood chips from waste wood can be burned in heating systems without any problem and thus used for energy. Those wanting to get even more calorific value from their waste have the option of using briquettes. Other advantages include a volume reduction of up to 80%, higher resale values, a significant reduction in the risk of dust and explosion, and energy-autonomous heat generation.

WEIMA’s exhibited C 150 briquette press is the compact machine for small- and medium-sized businesses, which turns wood shavings, sawdust and dust into 50mm diameter round briquettes. As with all WEIMA presses, compaction is achieved by hydraulic pressure alone. No adhesives or binders are used, as the naturally-occurring lignin is completely sufficient for bonding to produce dimensionally stable wood briquettes.

Experience residual wood at its best; visit WEIMA in Hall 12, on Stand D21. To find out more, see www.weima.com.