This model of subsoilers can be used for intensive loosening of deep soils, breakage and mixing of top soils. Intensive loosening is provided by aggressive position of tines in the soil. Subsoilers AGROMASH GRN 55/70 are intended for cultivation of soils on 55-70 cm depth; therefore they can be adapted to different soil conditions and amount of plant residues. Due to the special shape of feet these machines are particularly good for deep and humus soil layers, for which simultaneous top soils preparation and plant residues mixing are preferable. Model range 55/70 is characterized with double-row frame (section 200х100х10 mm) with wide clearance which guarantees operation without embedding in deep loosing (as well as with big amount of crop residues). An aggressive position of curved tines ensures powerful retraction and fine breakage. Tines with changeable blades minimize working elements replacements costs. A shear bolt protects tines and frame from overload.