The new grinder is aimed at the industry demands for high-production mobile units.
The 6400XT includes many feature improvements present in the smaller 3400XT, which was introduced in 2017. The infeed bed is 24 inches (60.96 cm) longer than previous Morbark grinders in the 1,000-plus horsepower range and has sloped sides. This configuration improves operator sight lines for more efficient loading of material. Standard on the 6400XT is a removable infeed chain return floor, which allows excess material to fall away to minimize the wear on the floor, bed chain and inserts, particularly useful in land-clearing or other applications with dirty material.
Also similar to the 3400XT is the focus on transportability. The 6400XT weighs in at less than 96,500 lb (43,772 kg) and measures 11’5½” (3.49 m) wide with the standard Caterpillar 325L undercarriage with 600mm double grousers, allowing the unit to be transported to nearly all domestic and international markets.
The 6400XT has several operator-friendly features focusing on accessibility for daily maintenance. These include the extended 31.5″ wide (80 cm, 25% increase) platform between the hood and engine for ease of changing grates and access to diesel engine; a fixed work platform for better access and safety during common grate and hammermill maintenance; a hydraulic hinged door and hood locking system to provide quick access during grate changes — the hydraulics unlock with a simple turn of a knob; a consolidated area for oil and hydraulic filters; an independent hammermill drive tensioning system for ease of adjustment; and a larger feedwheel (40″/101.6 cm diameter, an increase of more than 15%), which raises 17″ (43.2 cm) above the current 4600XL yoke and 11″ (27.9 cm) above the 6600 yoke to allow better access to the hammermill during insert inspection
Another key improvement is the 42″ x 61″ (107 cm x 155 cm) solid-plate rotor with 3″ (7.6 cm) retaining rods and a 42″ (106.7 cm) tip swing. The standard hammer pattern is 18 hammers with 18 rakers, but like all Morbark rotors, it can be configured to multiple patterns for various application requirements. The standard engine options for the 6400XT are the Caterpillar C27, 1,050-hp (783 kW) engine or Caterpillar C32, 1200-hp (895 kW) engine, both Tier 4 Final. Morbark’s driveline protection system is standard on all Wood Hog models. The externally adjustable, break-away torque limiter helps to protect the driveline and hammermill from catastrophic damage caused by contaminants. Source