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Purchased from Johnson Farm Machinery in 2002, the Johnson Harvester is a heavier machine and a high performer in large open fields. Equipped with load sense hydraulics and independent flow controls for all functions, the Johnson is constructed with a heavy-wall tubular steel main frame that can withstand even the most adverse field conditions.
Built to harvest 70 tons of tomatoes per hour, the core of the Johnson Tomato Harvester is the patented Three Weight Shaker. With curved vine rods and adjustable shake rate and rotation speed to match any field condition, the shaker is designed to maximize recovery. Reel and two-stage shaker system built to minimize harvest losses, the shaker frequency is easily controlled for optimal performance in all field conditions.
Construction of the Johnson tomato harvester begins with a heavywall tubular steel main frame that is built tough to operate under the most adverse field conditions. The four wheel hydraulic drive system is made from heavy duty components that provide maximum torque and ground clearance.
The front and rear axles are pivot mounted to allow tilting without twisting of the frame. The axles are hydraulically coupled together which means the frame feels only half the rocking motion as the harvester crosses an obstruction such as a furrow. This design creates a more equal wheel loading which means speeds can be increased, particularly at the headland, with the header remaining level relative to the ground.
The hydraulic system is a closed center pressure/flow compensating system. It delivers only the required flow and pressure to overcome a load or turn a motor and a lower horsepower requirement with lower oil temperatures than other systems.
The heart of the Johnson tomato harvester is the patented Three Weight Shaker. Its features include:
• Curved vine rods with longer shake strokes which maximize recovery
• Adjustable shake rate and rotation speeds for all field conditions and varieties
• When properly adjusted, the powered rotation and large weights virtually eliminate brush plugging.
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