Crushing shafts.
These shafts consist of toothed rings loosely mounted on a common axis, alternating with flat discs having projections on the side surfaces. Because the discs are slightly smaller in diameter than the rings, there are differences in rotational speed between them, thanks to which there is a mutual purification of these elements. These shafts have a stronger crushing effect than ring shafts. They are suitable for working on compact soils, very strongly lumpy. In addition to their crushing effect, they compact the soil, leaving, however, its surface well loosened.