The Series III duplex drum is built off the proven cutting performance of previous Vermeer duplex drum designs and makes maintenance more convenient with enhancements such as an independently secured wedge system and enhanced drum balancing. Maximize feeding capability with machine sidewalls that provide optimal flow of material and minimize operator interaction. The feed roller planetary is fully enclosed for protection from debris and offers a tighter clearance between the feed roller and mill housing, helping reduce material blockage and drag on the feed roller circuit. Maximize productivity thanks to the exclusive Vermeer SmartGrind system, which automatically controls grinding speed based on engine rpm levels. Top-loading screens are designed to give operators easy access.