Kuhn's new Durakarb power harrow blade, with tungsten carbide plates, offers an extended service life, especially in stony areas.
Developed through farmer testing in paddocks around the world, the cutter-bar design has an even lower profile, while retaining the performance and reliability features of the original Optidisc design.
The design is said to create a smooth, clean cut with minimal ash incorporation due to a very flat cutter-bar angle even at low cutting heights. Additionally, differential disc spacing utilises narrower spacing at the diverging discs for extra knife overlap to create a clean cut even when the grass is short or light. Wider spacing of the converging discs provides more space for the crop to pass from the cutting area; improving the cut quality, while free-rotating Fast-Fit knives also help enhance cutting quality and provide longer knife life.
Reliability is retained through Kuhn’s patented Protectadrive disc bearing stations, that upon striking major obstacles, are designed to shear outside the gear case protecting the components within the cutter-bar.
The equal sized gears allow maximum power transfer with even torque loads across the full cutting width. Maintenance and downtime are minimized with a lubricated-for-life design requiring no routine oil changes.