Modern Tillage aims to avoid soil erosion by ensuring that any mechanical tillage is carried out so the essential ecological systems and excellent crop growing conditions are maintained. With this in mind conservative cultivation or minimum tillage of the basic soil provides the flattest possible cultivation and low soil penetration. Enabling harvest residues to remain and be integrated into the upper soil layer and enhancing resistance to soil erosion and sustain soil fertility.
These modern techniques require new tillage machines to deliver these benefits. Modern tillage now favours independent disc suspension rather than a rigid or gang frame harrows. With independent discs, machines offer distinct advantages such as increased speed, flexibility, reliability and soil turnover compared with gang mounting. The most obvious advantage is speed with independent disc suspension allowing a higher working speed (up to 16km/h).
Independent disc suspension increases demands on bearings as the bearing requires the ability to support the disc against various tilting forces coming into contact with it. Is also able to repel contaminates such as mud dust and jet washing, and still enable the disc to rotate effectively during operation.