Lemken compact disc harrows have stood for outstanding mixing efficiency at high forward speeds since 2001, and the company has now launched the successor model, the Rubin 10, which delivers a wide range of improvements. Most striking is the new disc arrangement on both implement sides. This not only ensures directional stability, without lateral pull, and thus reduces fuel consumption, but also allows precise pass alignment, also using GPS.
The discs are arranged to produce symmetrical forces on both implement sides. The three central discs on the Rubin 10 have been offset along the longitudinal axis to ensure that they are able to work collision-free across the full width at a line distance of 12.5cm. This patented solution optimises the flow of soil and results in even cultivation across the full working width. The discs engage across their full surfaces from a working depth of 7.0cm. An undercut maintains optimal penetration and boosts mixing efficiency even further.
The Rubin 10 features surface-hardened DuraMaxx discs with a diameter of 645mm as standard. These discs have a service life that is 30 per cent greater than that of conventional discs. The new legs are 30mm thick and therefore substantially more robust than in the previous range. Their design with multiple bends provides plenty of clearance to prevent blockages. Each concave disc in the Rubin 10 is now equipped with an overload protection with damped return to minimise frame loads. The overload protection pockets are welded to the frame to keep the discs perfectly on track.
An integrated harrow behind the first row of discs improves the crumbling effect and distributes soil and organic matter in the driving direction, while the rear impact and levelling harrow distributes the soil to form an even, level surface.
The mounted Rubin 10 version is available with a Uni wheel for lower lifting force requirements and reduced loads on the rear tractor axle. Load is applied to the purely mechanical wheel system as the implement is raised, and no additional spool valve is required. This also allows heavier rollers to be used to achieve better reconsolidation.
All folding versions feature hydraulic depth adjustment as standard. The semi-mounted compact disc harrows are optionally available with depth control wheels, which ensure even working depths in variable soils and precise pass alignment along slopes.
The Rubin 10, with working widths of 2.5-7.0m, will go into series production from 2019.
For more information visit: www.lemken.com.
