The masses involved are among the operational parameters to be carefully evaluated when choosing equipment. Heavy weights are not always essential, especially if, with the same final result, using lower masses also helps reduce the risks of soil compaction and fuel consumption. This is especially true when using seeders, machines that, depending on the type of work to be done and the soil conditions, must adapt to specific needs in order to always guarantee the best ratio between performance and operating costs. For this reason, Kuhn has tailored its offering in the precision pneumatic seeders segment based on two different series, called “Maxima 3” and “Kosma”, which are oriented towards two different mission profiles.
The former, available in 13 models, target the most demanding applications with masses ranging from 1,070 kilograms in the four-row attachment model to 3,780 kilograms in the top-of-the-range 12-row version based on a double telescopic frame. The latter, lighter due to weights ranging from 910 kilograms in the basic four-row version to 2,650 kilograms in the most structured 12-row model, dedicated to sugar beet seeding, offer a reduction of up to 30 percent in the lifting capacity required from the tractor compared to the “Maxima 3” models of the same configuration, allowing them to be paired with medium-powered vehicles.
Range among the widest on the market
Thus configured, Kuhn’s range of precision pneumatic seeders offers one of the widest ranges of masses involved in the market, not only in terms of structure but also and above all in terms of seeding elements. In the “Maxima 3” series, these elements reach a weight of 120 kilograms when empty, while in the “Kosma” series, the weights stop at 95 kilograms. It should be noted that these parameters correspond to the ground pressure during seeding when the machines are set without extra pressure, as is the case when working on very loose soils and with shallow seeding depths. On the other hand, when dealing with more compact soils and deeper seeding depths, it is necessary to exert higher pressures to ensure the necessary uniformity of planting. This goal is made possible by a simple and manageable coulter pressure adjustment system, which for the “Kosma” series allows for additional pressures of 12.5 or 25 kilograms, up to a maximum pressure capacity of 120 kilograms. The “Maxima 3” series offers more generous additional performances, with machine settings that allow for increases of 20, 40, or 60 kilograms to reach a maximum of 180 kilograms.
Also electrically operated
Operational precision is also contributed by the seed distribution system, which in both series can be mechanically or electrically operated, with the latter ensuring maximum compliance with the seed rate per hectare without drawing on the tractor’s electrical power.
This is thanks to the presence of its own 48-volt alternator that ensures continuous rotation with great precision even in the event of sudden accelerations or decelerations, being able to operate with extreme seeding populations, up to 600,000 units per hectare, depending on the type of seed and the forward speed. The latter varies from four to eight kilometers per hour for the “Kosma” and between five and ten kilometers per hour for the “Maxima 3”, both of which can benefit from ejectors that release the seeds on the disc through a modified door that ensures a clean interruption of the pneumatic suction that holds them.
Navigating Through Different Acronyms
In addition to the number of rows, Kuhn seeders are distinguished by the acronyms accompanying them. The “Kosma” models are indeed divided based on three different versions. The acronym “M” identifies the models with fixed frame from four to six rows, while “Td” and “R” respectively indicate machines equipped with telescopic frame and folding versions from eight to 12 rows. Similarly, the “Maxima 3” also present the same versions, but further subversions covering every possible configuration of the machine. The acronym “Trr” effectively indicates the foldable trailed frame, while “Rxl” and “Rt” respectively define the wide folding frame and the foldable and telescopic frame. The “Tim” versions of the “Maxima 3” series finally identify the equipment characterized by indexable telescopic frames, also in a wide version, capable of operating with variable inter-row spacing, with the latter being adjustable across the entire Kuhn range between a minimum of 37.5 centimeters and a maximum of 80 centimeters.
Title: Kuhn seeders series “Maxima 3” and “Kosma”, precision in their dna
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