Singling | Seed hoppers | Coulters

Precise singling – The heart of the Precea sowing technology

Singling with SmartControl – for precise seed placement 
Over-pressure in the singling chamber pushes the grains up against the nap holes in the rotating singling disc so that they are carried round. As they rotate, the grains, held in place under pressure, run past 3 stripper fingers which reliably ensure the stripping and singling of the grains on each hole. Doubles are effectively prevented. The stripper fingers are automatically adjusted via SmartControl to relieve the stress on the driver.

The benefits: 

  • The stress on the driver is reduced, since the SmartControl constantly handles the adjustment of the 3 seed stripper fingers. 
  • An increase in yield, since doubles and misses are avoided. 
  • Savings in time, since manual set-up is not necessary.

ElectricDrive – electric drive of the over-pressure singling 
ElectricDrive utilises a separate electric motor for each over-pressure singling unit. The seed rate can thus be adjusted very easily using the terminal. An activation button on each sowing unit makes it possible to check each individual singling disc.

The key feature 
Due to the well-thought through design of the centralised singling unit, the singling disc and the singling pressure chamber turn as one. 

The advantages of this layout are huge: 

  • Operation can be carried out exclusively using the tractor's electronic system, due to the fact that only a small amount of torque is required for rotation. 
  • The seal, which is otherwise subject to excessive wear, is not loaded.

"As the chamber rotates in step with the perforated disc, energy-consuming friction on the pressure chamber seal is avoided." 
("profi" – Driving report Precea 4500-2CC Super · 10/2019)

The singled grains are fired precisely
As soon as the singled seeds reach the outlet, the contact pressure is broken and the seed is shot past the opto sensor into the propulsion channel and thus into the soil.

Opto sensor with infrared sensor - reliable monitoring "seed by seed"
The pulse of the Precea - the firing of each individual seed - is registered by the infrared sensor in the opto sensor and transmitted as a signal to the AmaTron 4. The signal is then processed for use by e.g. the intelligent SmartControl stripper adjustment,. 

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Singling discs - full flexibility across the widest range of crops

One machine - 5 crops. Whether it be maize, sunflowers, oilseed rape, sugar beet or sorghum - the Precea TCC separates seed by seed - precisely and reliably

Increasingly complex crop rotations are finding their way into agriculture. It is often necessary to adapt to suit the soil conditions, actual nutrient consumption or the nutrient release from the previous crop, seed density, weather and climate changes, nutritional trends and market opportunities, even at short notice. The one constant: the precise singling of the Precea across the widest variety of single-seeded crops.

Because: the seed singling system of the Precea-TCC can be changed over to use different singling discs without any tools within a very short time.

The versatility of the Precea allows different crops to be sown both within the same and different sowing periods. This reduces the unproductive time over the course of the year, thus increasing the efficiency of the Precea and other associated operating resources.

Contractors can react flexibly to customer requirements and offer a wide portfolio of precision seeding – seed by seed, field by field.

The centralised singling discs are customised for different operating conditions or seed characteristics, such as different thousand grain weights and forward speeds.

The benefits: 

  • Full flexibility for the widest range of crops. 
  • Higher machine utilisation through continuing use in different sowing periods. 
  • Simple replacement of the centralised singling discs.

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Seed hoppers mounted on the sowing unit for Precea-TCC with 6 m working width

Flexible working without wasting time - easy filling, quick emptying
In the version with a seed hopper mounted on the sowing unit, each with a hopper capacity of 70 l, the seed is conveniently filled in from a sack since the hopper lids can be opened by just using one hand. A filling aid, that guides the seed safely into the hopper and makes the filling process even easier, is available as an option. The low level sensor, fitted as standard, provides an early warning of the fill level via the terminal.

Additionally, micro-granular applicators (hopper capacity 17 l) can also be specified (see page 19), thus extending the flexibility of the Precea 6000-TCC to smaller operations.

The centralised singling discs are easily replaced and the seed hoppers individually filled and emptied of any seed residues- by hand and in the shortest possible time. The coulter system can also be folded in with the seed hoppers full, allowing you to move on to the next field quickly and easily. An ideal solution for farms with different crops and for contractors having a wide range of customer requirements. 

The benefits:

  • Quick change of seed type.
  • Optional additional micro-granular application.

Saatgutbehälter auf dem Säaggregat (2) Precea6000-TCC_d0_mp_DJI_0079_d1_240312_CMS
Precea 6000-TCC with seed hoppers mounted on the individual sowing units and central fertiliser hopper

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Central seed hopper with Central Seed Supply for Precea-TCC with working widths of 6, 9 and 12 m

From big bag to each individual seed 
The short sowing periods available must be optimally utilised for uniform plant emergence. This requires a high output solution: maximum performance from the Precea-TCC with central seed hopper - for dozens of hectares and long working hours, ideal for large farms and contractors. 

The benefits: 

  • Large seed hopper (850 or 2,000 l) reduces filling stops and downtime. 
  • Self-regulating seed delivery from the hopper into the singling chamber simplifies operation.

Zentraler Saatgutbehälter mit Central Seed Supply (1) Precea6000-TCC_CSS_d0_kw_P3277509_d1_240313_CMS
Delivery unit under the central seed hopper
Central Seed Supply (1) Precea12000-TCC_d0_kw_P3070882_d1_230131
Reception unit above the sowing unit

Central Seed Supply – seed always available when it is needed
Seed is delivered from the central hopper to the reception units, mounted above each sowing unit, via an air stream. These reception units act as a temporary store for the seed. The control system is self-regulating: If the hopper is full enough so that the green grid on the inside is completely covered with seed, this restricts the air flow - no more seed is transported from the central hopper to the sowing units. As the seed is taken down into the singling chamber, the reservoir empties and the air flow is reactivated. The Central Seed Supply System thus ensures that the sowing unit supplies itself with seed without the need for electronic control.

Zentraler Saatgutbehälter mit Central Seed Supply (3) Gebereinheit_mit_Saatguttransport_Luftstrom_d1_240311_CMS

1. Illustration of delivery unit with seed transported by the air flow
2. Illustration of the reception unit with filled seed chamber
3. Illustration of singling overpressure chamber


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The PreTeC mulch sowing coulter – The precision coulter for any soil type

Maximum flexibility with the highest work rates 
No matter whether it is used for conventional or mulch sowing, the PreTeC mulch sowing coulter is perfect for precision sowing. Benefit from the first-class, consistent seed placement accuracy and use it to increase yield. The Precea facilitates high work rates due to its high degree of accuracy, in particular at high forward speeds of up to 15 km/h.

The benefits: 

  • High operating comfort 
  • Minimisation of any downtime 
  • Time saving during regular maintenance

Even field emergence
The mulch sowing coulter (120 kg under its own weight) can be pressurised to a coulter pressure of up to 350 kg via a hydraulic cylinder. This ensures smooth running and even field emergence under the hardest of conditions. The complete mulch sowing coulter unit is guided consistently via the 2 large carrying rollers. Soil opening is performed by a double disc unit and a following furrow former. Once the seed has been embedded in the soil by the catcher roller, the V-Press rollers follow on to close up the furrow again.

Das PreTeC-­Mulchsaatschar (1) Precea12000-TCC_d0_kw_P3070880_d1_230301_im_Text_CMS
The PreTeC mulch sowing coulter facilitates maximum precision as well as maximum output.

1. FerTeC twin double disc coulter
2. Carrying rollers
3. Catcher roller
4. V-Press rollers

The percentage emergence was rated exclusively as "very good" by the DLG.

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Hydraulische Schardruckverstellung (1)Precea-Detail_Schardruckverstellung_d0_kw_P6074157_d1_220114

Hydraulic coulter pressure adjustment

The coulter pressure can be adjusted even more easily and comfortably via the hydraulic coulter pressure adjustment. The coulter pressure can be adjusted to a pressure of up to 350 kg via the operator terminal, even on the move. The SmartForce automatic coulter pressure regulation also ensures that all coulters are automatically adjusted, even in varying soil conditions.

The benefits: 

  • Increased yields and an increase in the sowing quality as a result of effective singling. 
  • Increased adjustment comfort due to tool-free operation. 
  • Increased all-round flexibility due to the extensive range of optional equipment for the coulter.

Illustration: The coulter pressure can be easily adjusted hydraulically via the cylinder.

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Maximum operational comfort

The good accessibility to the seeding unit ensures high operating comfort. A multitude of adjustment options allows the adaptation to any requirement.

1. Placement depth
2. Contact pressure of press roller
3. Running angle of press roller

"The scales are directly embedded into the component and do not require adhesive labels – very elegant." 
("profi" – Driving report Precea 4500-2CC Super · 10/2019)

Illustration: Manual adjustment on the coulter

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Automatische Schardruckregelung SmartForce (6) Precea12000-TCC_Fendt_d0_kw_DJI_0656_d1_240314_CMS

SmartForce automatic coulter pressure regulation

The same placement depth across all soil types

A even plant population of a crop without gaps allows the uniform development of all individual plants by optimising the supply of light, water, carbon dioxide and nutrients. The basis for this is the uniform placement depth of the seed at the correct depth - even in heterogeneous soils with varying firmness or consolidation. No problem when using the SmartForce option for the Precea TCC - the yield potential of the crop can be maximised.

"Thanks to SmartForce, we have a uniform placement depth and therefore a better field emergence." 
(Stefan Kerkering, contractor · 05/2021)

Opinion in practice from Stefan Kerkering:

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Automatische Schardruckregelung SmartForce (1) Precea6000-2CC_Deutz_d0_kw_DJI_0228_d1_220114

Different soil conditions - a uniform outcome with SmartForce

Simultaneous maintenance of a consistent placement depth and optimum embedment of the seeds ensures high field emergence and provides the basis for good a yield.

Maintaining a consistent placement depth on varying soils or conditions where there is uneven reconsolidation represents a particular challenge for both the machine and the operator.

Automatische Schardruckregelung SmartForce (2) hydraulischer_schardruck_ohne_automatik
Hydraulic coulter pressure without an automatic system with inconsistent placement depth | 1) 30 bar

AMAZONE offers the SmartForce automatic coulter pressure regulation system as an add-on to the hydraulic coulter pressure adjustment.

The particular feature with this system is that the driver does not need to stipulate the coulter pressure, but rather they set the desired contact force on the terminal. This contact force is checked by measuring pins when in the field. If a deviation from the predefined contact force on the PreTeC coulter is registered due to changing

Automatische Schardruckregelung SmartForce (2) hydraulischer_schardruck_mit_automatik
Hydraulic coulter pressure with automatic system for consistent placement depth | 1) 30 bar 2) 50 bar

ground conditions, the SmartForce hydraulic system readjusts the coulter pressure accordingly. The correct contact force is precisely applied.

In this way, the coulter pressure is adapted to the differing ground conditions whilst on the move - uniform placement depths are thus reliably maintained under all ground conditions. This makes it easier for the driver and results in a more even field emergence.

The benefits: 

  • Uniform placement depth - regardless of any changes in soil conditions in a field. 
  • Uniform plant population enables maximum yield potential by optimising the supply of light, water, carbon dioxide and nutrients to the individual plant.

Automatische Schardruckregelung SmartForce (4) Precea6000-2FCC_Fendt_d0_kw_P4060894_d1_220228
The measuring pin registers changes in the contact force on varying soils. The ISOBUS-controlled SmartForce system then automatically evens out these fluctuations. As a result, the placement depth remains the same under all soil conditions.

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