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111 Disk ploughIn a disk plough the usual stationary blades are replacedby revolving disks fitted to the plough frame.<strong>The</strong> working width <strong>of</strong> the plough is determined by thenumber <strong>of</strong> disks.<strong>Bearing</strong> selectionDuring ploughing both radial and axial loads are imposedon the bearings. <strong>Bearing</strong> loads depend on soilconditions and cannot, therefore, be exactly determined.For safety reasons roller bearings with the maximumpossible load carrying capacity are used. Onetapered roller bearing FAG 30210A (T3DB050 *) andone FAG 30306A (T2FB030 *) are installed in Oarrangement and adjusted, via the cone <strong>of</strong> the smallerbearing, with zero clearance. This cone must, therefore,be able to slide on the journal.Machining toleranceson the journal:– j6 for the smaller bearing,– k6 for the larger bearing;in the housing: N7.Lubrication, sealingGrease lubrication (FAG rolling bearing grease ArcanolL186V). <strong>The</strong> bearings are adequately protected fromdirt and atmospheric influences by means spring steelseals and an additional labyrinth seal.*) <strong>Design</strong>ation to DIN ISO 355FAG 158
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