Great Plains 7000 Series Disk Harrow
Great Plains introduces the upgraded 7000 Series Disk Harrow. Building off its predecessor’s double offset gang configuration, the new model features several upgrades for enhanced efficiency and performance, including an improved lift hydraulic system, axle design, and leveling system.
“The leveling mechanism and single torque tube across the center frame allow us to keep everything uniform right to left, making it easy to level the center and easier to level the wings,” says Rodney Hake, Great Plains. “The new design tremendously reduces the amount of linkage that ties everything together, which reduces wear points and increases function and reliability.”
The 7000 Disk Harrow’s increased transport clearance allows for 24- or 26-inch diameter blades and a low-profile, t-style hitch tightens the turning radius. New, heavier gang bars are welded down the center to prevent cracking and breakage. Hydraulic gauge wheels, which actively raise and lower with other lift wheels, have also been added to the outside wings on larger units.
“Adding hydraulic gauge wheels to the outside wings allows the larger models to float better through the field, keeping the gangs at the proper depth, and preventing diving on the front and skipping on the back,” explains Hake. “We also went to larger tires, even on the wings, and we beefed up all the tire hubs, so all the hubs have higher transport capacity.”
The 7000 Disk Harrow features PEER maintenance-free bearings. With 360° rotation, the bearings are never overloaded and the six-lip seal on each side locks in grease and prevents contamination. Additionally, the walking beam pivots use Teflon-coated bushings to eliminate the need for tapered bearings and grease in pivot points. “The only grease on the entire machine is on the wheel hubs, which only require yearly maintenance,” adds Hake.
The 7000 is available in widths of 23 to 36 feet with 7.5- or 9-inch row spacing.
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