TANZI® Leaders Air Drill System

Seed Drill

Special 4

Air Drill


The Special 4 Air Drill was created thinking of demanding producers, who want to make the technological leap to the no-till system. It has all the technology of our larger air drill seeders, in a compact and versatile machine with an extraordinary design.

It has a highly robust chassis in versions from 8 to 12 meters of working width, 5000 liters of hopper capacity and endows the last generation of TANZI double disc openers, constructed in a single piece of cast nodular steel and mechanized by CNC. These and many more details make it a unique machine in its segment. In short; A breath of technology for your field.

  • For no-till seeding of fine grain, soybean and pastures with optional pneumatic or mechanical kit for coarse grain planting.
  • Versions from 8 to 12 meters.
  • Pressurized 5000 liter hopper with internal division 60% -40%. It can be used either for seed and/or fertilizers.
  • Cutting-edge double-disc openers made of nodular steel and mechanised by CNC.
  • Optional coarse grain kit with Precision Planting technology at different levels.

Technical specifications


Number of openers
Row spacing

8 mts

29 - 37 - 39 - 43

26 - 21 - 19.1 - 17.5 cm

10 mts

37 - 45 - 49 - 53

26 - 21 - 19,1 - 17,5 cm

12 mts

43 - 55 - 61 - 65

26 - 21 - 19,1 - 17,5 cm

  • The new 3-section chassis with floating hitch and compensated hydraulic parallelograms allows a perfect ground copying in any working condition.
  • The row unit is manufactured from a single piece of cast nodular steel and mechanized by CNC. It has 16" opening discs, independent fertilizer drop and leveling wheel arm with bearings that eliminate all kind of maintenance and greasing. It allows to assemble any kind of component available in the market of precision agriculture, either electric drives in meters, down tubes with optical or inductive sensors, load cells, pneumatic air springs or electro-hydraulic actuators.
  • The new coulter system of 18" is assembled on bearings, which avoids premature wear and in turn is free from greasing. This combination is hitched to 44.4 mm diameter shanks that allow to work on the most aggressive soils without breakdowns.
  • Variable row spacing. The machine can be configured in the factory at any distance and then be modified in the field as many times as necessary.
  • The 1.5 meters of separation between row units offer an excellent flow of stubble waste and at the same time offers great accessibility to perform maintenance tasks.
  • Minimum soil compaction and great capacity to move along "muddy" ground due to the great distribution of weight over its 8 or 12  (depending of version) high flotation tires 400/60 15.5.
  • Rocker system in the front part of the chassis that provides a great copy of the land and easiness to avoid obstacles such as gradients, caves or level curves.
  • Front or rear openers blockage to work with only one bar.
  • Gearboxes of indefinitely variable rate.
  • "Air Drill" metering system of proven efficiency at international level, which assures a consistent delivery of air and supplies, obtaining an excellent and even distribution in each opener.
  • Each distribution box is equipped with a quick-change corrugated roller. With 3 different types of rollers (low, medium and high rate) it is possible to seed all kinds of seeds, including pastures, and apply any solid fertilizer or granulated insecticide.
  • Equipped by default with a high technology computer to monitor equipment and with a great level of functions.
  • Coarse grain kit with Precision Planting technology.
  • Coarse grain kit with Matermacc pneumatic metering units.
  • Coarse grain kit with mechanical horizontal plates metering units.
  • Electronically controlled gearboxes drives. Allow variable seeding and fertilizing.
  • Hydraulic horizontal displacement row markers.
  • Auxiliary circuit to operate with open center or low hidraulyc flow tractors.
  • Star discs in cover wheels.
  • Press wheels.
  • Auger loader.


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