Heavy spring harrow Green Ray 9 m WTD with a set of front discs (option WTD) and a working width of 9 m is designed for:

• uniform distribution of crop residues over the field;
• acceleration of the process of decomposition of crop residues by cutting with discs and mixing with the topsoil;
• spring harrowing to destroy the surface crust;
• destruction of weeds in the phase of "white thread" (combing out weeds);
• closing moisture by interrupting the capillary flow from the lower layers of the soil;
• leveling the soil surface after the main processing;
• incorporation of seeds and fertilizers;
• continuous tillage when caring for fallows and preparing for sowing.

Design features of Green Ray heavy spring harrow 9 m WTD​:

• five rows of spring teeth with a diameter of 16 mm and a length of 760 mm;
• hydraulically adjustable independent spring-mounted front discs;
• hydraulically adjustable angle of attack;
• hydraulic folding of working elements with their automatic blocking for transportation;
• the dimension in the transport position complies with European standards.

Specifications:

Working width, m ... 9.45
Working length, m ... 8.4
Transport length, m ... 6.1
Transport height, m ​​... 3.85
Width during transportation, m ... 2.75
Total weight, t ... 4.65
Number of sections with combs, pcs ... 5
Number of combs, pcs ... 75
Distance between combers in a row, m ... 0.63
Number of rows with combs in a section, pcs ... 5
Distance between single spring harrow teeth, mm ... 63
Depth of processing, mm ... 0-80
Adjustment of the angle of attack of the comb teeth ... 8 positions, manual adjustment
Number of turbo disks ... 28
Diameter of turbo disks, mm ... 440
Turbo disk spacing, m ... 0.33
Aggregation type ... Semi-mounted
Tractor hitch ... Two-point NU-3
Need for hydraulics:
Folding/unfolding ... 1 double acting spool
Raise/lower ... 1 double acting spool
Depth adjustment of discs ... 1 double-acting spool
Hydraulic system pressure, bar ... 180
Minimum tractive power of the tractor, h.p. ... 180
For deep processing, it is recommended, h.p. ... 240
Number of attendants, people ... 1