БДТ 1.

Purpose and Design Features of the BDT-3

The BDT-3 heavy disc harrow is a trailed tillage implement designed for intensive soil cultivation after the harvest of grain and industrial crops. Structurally, the unit belongs to the class of disc harrows featuring two rows of spherical notched discs mounted on individual stems. Its primary purpose is the shredding of crop residues, incorporation of fertilizers, breakdown of perennial sod, and preparation of seedbeds without preliminary plowing. High weight per disc allows the implement to operate at depths of up to 18-20 cm, effectively cutting weeds and forming a fine-crumb structure of the topsoil.

Working Components and Geometry

The core of the BDT-3 consists of discs with a diameter of 660-710 mm, made of high-strength boron-containing steel. The use of notched discs (the 'daisy' type) provides increased aggressiveness in soil interaction, which is critical when working on hard, dry backgrounds. The disc attack angle is adjustable depending on soil type and moisture, allowing the implement to be adapted to specific agronomic conditions. Individual suspension of each disc on a spring damper (or rigid stem with maintenance-free hubs) prevents the inter-section space from clogging with plant debris.

Frame and Aggregation System

The BDT-3 frame is made of thick-walled square-section profiles, providing the necessary rigidity for operations at high speeds (8-12 km/h). The frame design distributes weight evenly across the entire working width, preventing the unit from 'fishtailing' during operation. Aggregation is carried out with tractors of traction class 3-4. A reliable hitch mechanism and a hydraulic system for folding into the transport position ensure mobility and safety when moving between fields on public roads.

Application in Agricultural Technologies

This model effectively replaces classic plowing when managing corn or sunflower stubble. In one pass, the BDT-3 performs loosening, mixing of soil with residues, and partial surface leveling. Using the harrow in autumn promotes moisture accumulation, while spring usage ensures early soil warming and moisture retention. The powerful construction allows for effective control of pests hibernating in the stubble by burying them, which leads to their subsequent decomposition.

Maintenance and Reliability

The simplicity of the BDT-3 design ensures high field-repairability. Key components—disc hubs and wing folding joints—require minimal daily attention. The service life of working components on abrasive soils reaches 1500-2000 hectares, provided the attack angles are adjusted in a timely manner. The absence of complex electronic control systems makes this harrow a reliable tool for farms that value durability and mechanical predictability.

Who is the BDT-3 For?

The unit is an ideal choice for farms with a land bank of 500 to 2000 hectares using classic or minimal tillage technology. The BDT-3 is optimal for regions with arid climates, where speed of stubble processing immediately after the combine is critical to prevent moisture evaporation. High productivity (up to 5-7 hectares/hour depending on conditions) allows for reduced field work timelines, which directly impacts the quality of the sowing campaign.

• Working width: 3 meters.
• Tillage depth: up to 20 cm.
• Number of discs: 24 units.
• Required tractor power: 130-150 hp.
• Disc type: spherical notched (660 mm diameter).