TWIN ARM

A very wide clamping bracket and two solid, forged carrier arms is what makes PÖTTINGER's proven TWIN ARM system so reliable. Because clamping brackets have a 380-mm wide area of contact with the frame, the discs always maintain their position and setting. Even in heavy, dry, compacted soil the discs cannot deviate to the side and hard wheel marks are broken up reliably meaning a uniform working depth is achieved.

Non-stop stone protection

The 40 mm thick elastic rubber elements provide proven, maintenance-free, non-stop stone protection for many years. The rubber elements are positioned between the clamping brackets and the box section frame. They exert sufficient pressure on the discs to ensure reliable soil entry. The large deflection arc of 30 ° enables the discs to smoothly ride up over large stones or obstacles.

Generous inter-disc clearance

There is plenty of space between the clamping bracket, disc arm and disc to ensure blockage-free operation even with high volumes of organic matter and deep working depths. The gap between the carrier arm and the disc opens up in the direction of rotation to effectively avoid the snagging of stones or harvest residues.

What is more, on the TWIN ARM system the disc bearings are mounted on the outside of the disc and are therefore protected from the working area of the disc. This configuration actively prevents dirt ingress to the bearings and harvest residues from wrapping around them.

Universal discs

To achieve the highest wear-resistance, the scalloped or plain concave discs are manufactured with a diameter of 580 mm and a thickness of 5 mm from special heat treated steel. The combination of disc diameter and aggressive disc angle enables full surface movement of the soil even when working at a shallow depth of 5 cm. At the same time, however, reliable mixing of the soil is enabled, also when working deeper. The eight discs per metre of working width equate to a compact spacing of just 12.5 cm.

Plain discs

• More consistent level finish

• Moves the whole surface at a shallow working depth

Scalloped discs

• Improved soil entry

• Aggressive working results

• High clump breaking intensity

Aggressive disc angle

The effect of an aggressive angle combined with a moderate inclination of the discs ensures reliable soil entry and powerful mixing. In the front row, the discs are at an angle of 17 ° in relation to the direction of travel, while in the back row, the discs are angled at 15 ° in the opposite direction. In both rows the discs are inclined at 7 °.

Durable disc bearings

The disc bearings are designed for maintenance-free robustness and reliability. The large-dimensioned, twin-race taper bearings cope with high stress and absorb shock loads perfectly.

Maximum convenience and durability are ensured by the permanently greased, sealed design. Labyrinth seals prevent the ingress of dirt and moisture. The nuts on the disc bearings are protected by caps screwed onto the same stub shaft.