Ditchers equipped with one rotor only intended for excavating and cleaning the entire ditch profile. The excavated soil is only distributed on the right side of the ditch. The spreading distance is adjustable by manually acting – or hydraulically if requested – on the position of the rotor covers. The excavating angle is 30° (28° for model DMR25NLF/28°). The width of the bed may vary between 8 and 25 cm, whereas the maximum depth ranges between 35 and 80 cm, according to the model. Typical applications of this type of ditcher are for cutting temporary drains intended for regulating surface water or small irrigation ditches.