The HG4000 horizontal grinder from Vermeer features a number of cost- conscious features that will appeal to municipal waste facilities, pallet and sawmill operations, and compost contractors.
A 445 horsepower (332 kW) Tier 4i (Stage IIIB) Fiat Powertrain Technologies diesel engine powers the HG4000 and meets all U.S., Canada and European Union emission regulations through selective catalytic reduction (SCR). This power plant has shown a considerable fuel savings over similarly powered engines in this application. To help maximize power to the HG4000 processing functions, Vermeer uses an array of electrically powered, variable speed, and reversible fans for the cooling system. This not only reduces draw of engine power, but also has shown to help reduce machine sound levels.
To reduce material slippage and maintain controlled entry into the mill, the crush boost button on the remote momentarily engages increased feed roller downforce on incoming material. For certain conditions, the variable feed roller downforce can be reduced or temporarily paused, as adjusted on-the-fly or set by the operator, to boost fuel efficiency and help extend component wear life.
The heart of the HG4000 is the Series II Duplex Drum, consisting of nine hammers and 18 grinder tips. This patented design decreases daily maintenance time while increasing the life of major wear components by providing the ability to reverse the grinder tips, hammers and center section of the drum. Maintenance time is decreased by the ability to remove and replace single hammers along with the ability to externally balance the drum.
A range of screen configurations are compatible with the HG4000 to help meet a wide range of end-product needs. With a dual-screen system, screens can be mixed and matched for the desired product. Screens are also reversible and interchangeable to maximize wear life.
For overall operational efficiency, the HG4000 offers several design considerations to reduce material build-up around the machine; among them are flared infeed table sidewalls, a round top infeed chain, 60-inch wide (152 cm) feed table and single-piece belly and discharge belt. The discharge conveyor, rated at 14 feet (4.3 m), can load a standard semi-trailer, helping reduce the costs involved with auxiliary conveyors. Class-leading trailer ground clearance enhances compatibility in off-pavement applications.
Bolt-in wear plates are installed on the anvil surface, mill box side plates and mill lid. This enables the economical replacement of wear surfaces without torching and welding, extending the usable life of the machine and helping to lower the cost of operation.