JOHN DEERE SELF-PROPELLED FORAGE HARVESTER 8200
ADVANCED COMFORT AND SERVICEABILITY IMPROVE PERFORMANCE AND UPTIME
COOLING PACKAGE SERVICEABILITY
The entire cooling package for the 8000 Series Self-Propelled Forage Harvester (SPFH) cooling system can be accessed from the service compartment in the middle of the machine. Everything can be reached easily in one spot on the machine, making daily servicing convenient. The constantly rotating radiator screen allows a wide opening angle for easier service. No tools are required for servicing the air filters. The filters can be reached when standing on the left side of machine in the service room.
The standard 1100-L (290.6-gal.) fuel tank and 43-L (10.6-gal.) urea tank are located in the low center and on the low center left-hand side of the machine. This guarantees a low center of gravity. Both tanks filler necks are accessible from the cab stairs. Refueling is done from one single position.
The 8000 Series cutterhead unit concept provides two methods to access the shear bar and cutterhead for inspection or maintenance. Leaving the header mounted on the machine and releasing the top locking mechanism together with the top side pivot pin, while the lower clamps remain locked, allows access to the shear bar and the knives through a 35-degree V-opening. Detaching the header and releasing the upper and the lower locking mechanisms, provides convenient access through a feedroll door opening action, similar to the 6000 and 7000 Series Harvesters.
HEAVIER DESIGNED COMPONENTS INCREASE RELIABILITY WHILE IMPROVING UPTIME AND LOWERING COST OF OPERATION
Capacity, harvesting quality, machine efficiency, and total cost of ownership have always been important differentiators for self-propelled forage harvesters (SPFH). Machine size, weight, or soil compaction associated with weight, and tire size is critical to producers' acceptance of certain machines on their fields. A key demand on the 8000 Series was to find a machine layout for optimum weight distribution and maximum capacity potential. The driveline concept has been optimized for maximum flexibility in setting the individual component speeds and also synchronizing certain functions for maximum harvesting quality. Specific component design has been implemented to improve efficiency. Components have been laid out for matching the power demand, not only of todays producers, but also meeting potential requirements of future users. Most advanced wear-resistance technology is applied on all crop-flow elements to assure full-season harvesting uptime. Longer component wear life significantly lowers the cost of ownership.
OPTIMAL DESIGN AND POSITIONING OF COMPONENTS INCREASES CROP DELIVERY PERFORMANCE
PROSTREAM CROP FLOW
A key concept for the 8000 Series Self-Propelled Forage Harvester (SPFH) line was to position all crop-flow components to avoid any restrictions, as well as to design the crop path for minimum kinetic friction on the particles. The 8000 Series crop-flow channel begins at the harvesting unit pickup tines or crop-row pointer. On the actual harvester, it starts with the feedroll arrangement. Key characteristics are a set of front feedrolls where, when the header interface is in a vertical position; the upper-front feedroll (UFFR) reaches out about 60 mm (2.4 in) over the crop in front of the lower one, grabbing the mat from the harvesting header and pulling it into the feedroll gap. This is a key function when corn headers without feed augers are mounted; assuring the machines crop feeder is the sole length-of-cut (LOC) metering unit of the harvester. On its way to the cutterhead, the radial-arc-feed roll arrangement applies pressure to the crop for superior cut quality. The crop mat is perfectly compressed until the last second before transitioning into the knives. From the moment the knife pockets start unloading, the cutterhead band takes the crop particle stream, collecting it for launching into the crop chute. The crop path follows a constant curve between the cutterhead floor and the accelerator entrance. The crop accelerator, the spout transition, and the spout build the machines crop discharge device. All components that have an acceleration impact on the crop perfectly integrate tangentially into this curve for a fully unobstructed crop flow.
With 1800 rpm, the accelerator provides sufficient thrust to the crop stream for loading with the largest of heads without consuming excessive power. Rather than being carried by the accelerator rotor, the crop follows the curve of the accelerator band before moving through the transition directly into the spout base, from where on it follows the spout contour. The crop hits the transition front liner just below the spout entrance at a shallow angle, minimizing component wear and inertia losses. This constant flow curve was designed to the spout as gently as possible so that the crop flow components had the least friction effect on the crop particles. Sufficient space on the vehicle for a cab that allows for more operator leg room, though keeping the overall machine compact, was a key demand. Ultimately, the 8000 Series SPFHs provide superior crop-flow efficiency, resulting in industry-leading machine capacity in respective horsepower classes as well as low-specific-fuel consumption (amount of diesel per ton of crop harvested). Combined with Dura Line technology, the 8000 Series SPFH triggers the lowest possible machine maintenance with minimal cost of operation.
MAXIMIZE ANIMAL PERFORMANCE THROUGH FORAGE QUALITY
The unique Dura-Drum cutterhead design, together with the portfolio of cutterhead configurations, allows 8000 Series machine owners to perfectly specify their harvesters for meeting all operating demands. Three different cutterhead configurations with 10, 12, or 14 lines of knives, a full or half set of knives, and in conjunction with 1100 or 1200 cutterhead rpm provide an overall range of length of cut (LOC) from 3 mm (0.12 in.) up to 52 mm (2 in.). The 8000 Series Self-Propelled Forage Harvesters (SPFH) meet any customer requirements.
BEST-IN-CLASS POWER EFFICIENCY DELIVERS UNMATCHED PERFORMANCE IN THE FIELD
Power-efficient crop handling and machine propulsion in the field are critical to maximum field performance on given engine power. On the 8000 Series Self-Propelled Forage Harvester (SPFH), this is addressed through a unique machine layout leading to a fully harmonized crop path, avoiding any abrupt change of flow direction in the channel. The 8000 Series machines feature automatic header detection, which automatically triggers all relevant calibrations and pre-settings memorized on the machine controllers. Header lateral ground adaptation as well as a driveline synchronized with the machine crop feeder, or an optional dual header drive where the pickup tine reel would adapt the machine forward speed, and the feed auger speed would be in line with the feedroll speed, are leading to unobstructed crop entry into the harvester. Capacity and harvesting quality is maximized. Advanced header control and active header guidance on corn heads allows precise header positioning through feelers, while the head is not in contact with the ground, resulting in an absolutely even stubble field. Header attaching comfort is unmatched. Operations are reduced to manually applying the locking lever, and quick-coupling electric and hydraulic services.
PRODRIVE SYSTEM COUPLED WITH LARGE TIRES BOOST PERFORMANCE AND UPTIME IN SOFT CONDITIONS
ProDrive is the industry-leading ground-drive propulsion.Due to weather conditions, the harvesting window becomes shorter and in some areas around the globe, the machine has to work under very wet and soft soil conditions. This leads customers to get a forage harvester which is able to manage harvesting in these varying conditions. The 8000 Series with the ground-drive-propulsion ProDrive, in conjunction with largest tires in the industry and optimized weight distribution, leads to maximum performance and uptime in soft soil conditions. The largest tires, with a diameter of 1067 mm (42 in.) and a width of 900 mm (35.4 in.), deliver in comparison to a 7000 Series tires, a 34 percent larger footprint helps the 8000 Series with increased traction as well as less ground compaction. The 8000 Series performs without compromises due to the industry-leading ground clearance, especially in soft soil conditions.
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JOHN DEERE SELF-PROPELLED FORAGE HARVESTER 8200