The new Terradisc HT 12000 disc harrow from Pöttinger has been designed for multiple applications. For stubble cultivation and seedbed preparation, in heavy, dry soil conditions, and with high volumes of harvest residues, it provides the best soil movement.
The trailed, horizontal folding disc harrow enables high-performance operation with tractors ranging from 450 to 720 horsepower. With a working width of 12.5 meters, it complements the existing Terradisc 8001 T and Terradisc 10001 T, with working widths of eight and ten meters respectively.
Heart of the new disc harrow model of is also well-known Twin Arm system with two disc carriers and two concave discs per clamping bracket. Because the clamping brackets have 380 mm-wide contact with the frame, the discs hold their line even in heavy and dry soil conditions to ensure consistent results. The maintenance-free, non-stop stone protection enables the discs to achieve a high level of pre-tensioning.
The diameter and position of the discs also remain unchanged. The combination of 580 mm scalloped or plain concave discs set at an aggressive angle is ideal for intensive soil movement and shallow tillage from 5 cm.
Four-section frame
On the 12.5-meter-wide disc harrow, Pöttinger achieves a new level in tracking field contours. The width of the machine is divided into four frame sections. These adapt to any unevenness independently of each other: the inside sections can move between -3° and +6°, while the outside sections can move between -4.5° and +4.5°. This means that the disc harrow can reliably track ground contours even in challenging terrain. To ensure each frame section applies a consistent pressure to the ground, the frame sections can be hydraulically pre-tensioned in pairs to match the soil conditions.
Together with the precise depth control provided by the large-dimensioned dual jockey wheels, the central transport chassis and the wide ground tracking using the rear roller with integrated damping, an even tillage depth is achieved across the full width of the machine.
Four double-acting spool valves
Particularly the wide selection of hydraulic adjustment options on the Terradisc HT 12000 makes it user-friendly. Four double-acting spool valves with intelligent presets regulate all the key functions and settings, such as working depth, headland position, pressure applied to the ground by the disc sections, and side pull correction. The working depth is set hydraulically using swing clips, which allow the working depth to be finely adjusted in 9 mm steps.
The rear roller supports the weight of the disc harrow at the headland to conserve the soil during a fast turning process. The length of the drawbar enables a large steering angle of up to 85°, making tight turning manoeuvres possible even when the machine is used with wide tractors.
