Centaya Special harrow-mounted seed drill

The maintenance-free RoTeC single disc coulter

Reliable and precise 

RoTeC coulters are maintenance-free and work very reliably, even where large amounts of straw and plant residues prevail. The sowing disc and furrow former create the seed furrow profile and provide the optimum seed placement into the soil. The Control 10 depth guidance disc, or the Control 25 depth guidance roller, prevent the soil from sticking to the sowing disc, thereby ensuring that the pre-selected sowing depth is precisely maintained.

Row spacings of 12.5 cm and 15 cm can be chosen.

Advantages of the RoTeC coulter

• High-performance single disc coulter for wet and cohesive soil types
• High level of self-cleaning through the depth guidance roller
• Decoupling of coulter guidance and reconsolidation
• Up to 35 kg additional coulter pressure

RoTeC coulter: tried and tested 2,000,000 times over!

1.    Tool-free adjustment of sowing depth in 3 steps.
2.    Reinforced support arm with a coulter pressure of up to 35 kg. Central coulter pressure adjustment.
3.    Control 10 depth guidance disc or Control 25 depth guidance roller for consistent sowing depth control. The depth control element actively cleans the sowing disc during use.
4.    Furrow former for a clean profile seed furrow.
5.    Seed guide tube up to the furrow former for an even seed placement.
6.    Exact harrow for excellent seed coverage.
7.    Sowing disc ∅ 320 mm, made of boron steel, working angle of 7° for smooth operation of the coulter.

Ingenious independent depth control of the coulters and the following harrow

One of the unbeatable advantages of the RoTeC coulter is that there is no connection between depth control and the reconsolidation system. This means that the coulter is raised only once when passing a stone. Furthermore, the coulter pressure and harrow pressure can be adjusted independently of one another. This very even and accurately controlled way of guiding the RoTeC coulter is ensured by the Control 10 depth guidance disc with its 10 mm wide contact area, or the Control 25 depth guidance roller with its 25 mm wide contact area, mounted directly on the side of the coulter.

The basic setting of the sowing depth is in 3 steps and is done directly on the coulter without tools.

Coulter pressure adjustment

RoTeC coulters operate with a coulter pressure of up to 35 kg. In this case the actual effective coulter pressure is comparatively higher with AMAZONE, because the pressure is not distributed between the coulter and the following press roller but acts solely on the coulter. Working with less coulter pressure is possible without any problem when sowing rape or when early sowing in dry conditions.

Inside view of the maintenance-free TwinTeC special double disc coulter

1. Adjustable harrow: the angle of attack is adjusted according to the degree of straw residues present.
2. Centralised, 100% independent adjustment of the placement depth and the coulter pressure.
3. Suspension of the TwinTeC special share on new, solid sprung rubber buffer blocks for even greater coulter pressure of up to 45 kg.
4. Protective front plate
5. Removable shims to compensate for disc wear.
6. Discs fastened at 5 points with recessed Torx screws. No wear on the fixing discs.
7. Maintenance-free bearings. Double disc ∅ 340 mm, angle of 10°, 
8. Double disc ∅ 340 mm, angle of 10°, row spacing 12.5 and 15 cm. 
9. Internal scraper – HD variant.
10. Depth control/press rollers with a width of 50 mm (optional scrapers).

The simple alternative for successful sowing

The TwinTeC special coulter for mounted seed drills means that AMAZONE can offer the ideal coulter for light and medium soils at speeds up to 10 km/h. With a coulter pressure of up to 45 kg/coulter, the coulter travels very smoothly through the soil precisely and reliably placing the seed. 

Benefits of the TwinTeC special coulter

• Reduced lifting force as a result of the lightweight design
• Better handling on the road and in the field as a result of its compact design
• Good soil-seed contact provided by trailing depth guidance roller
• Perfect depth control and simple setting as a result of trailing depth guidance roller
• Cost-sensitive alternative to the TwinTeC double disc coulter
• Simple operation and straightforward maintenance

Easy manual adjustment

In order to ensure that the placement depth of each individual TwinTeC special coulter is maintained, there is the Control 50 depth guidance roller behind each double disc coulter to ensure its precise depth control. The placement depth is easily adjusted on the right and left of the Centaya Special. The placement depth can be infinitely variably adjusted in each case, depending on the position of the depth guidance roller. 

Infinitely variable range of adjustment:
Lower position of depth guidance roller: 1 to 4.5 cm
Upper position of depth guidance roller: 2.5 to 6 cm

Setting the coulter pressure is carried out centrally via a spindle in the middle at the back of the Centaya Special.

The hydraulic coulter pressure adjustment enables the coulter pressure of the Centaya Special to be adjusted conveniently from the tractor cab. The coulters can also be lifted. The coulter lift is an extremely useful option for working in field corners.

The Exact harrow tine has a thickness of 10 mm, is low-wearing and provides excellent seed coverage. The Exact harrow serves for both coverage of the open seed furrows and for levelling. It operates without blockage, even where there are large amounts of surface straw. Individual, pivoting harrow elements allow it to adapt to uneven ground and achieve an even seed coverage. 

The harrow pressure is adjusted mechanically by pre-tensioning the harrow springs. When equipped with hydraulic harrow pressure adjustment, a minimum and maximum value is predefined by inserting pins. As a result, the harrow pressure and the coulter pressure can be simultaneously matched to changing soil types via just one tractor spool valve whilst on the move. 

Exact S following harrow
With its 12 mm tine diameter, the Exact S following harrow offers even more wear area and is therefore resistant to the most arduous of operational conditions.

The TwinTeC coulter can be equipped with an integrated harrow as an option. The coulter harrow is a standard feature of the TwinTeC special coulter. The coulter harrow provides additional loose soil on top of the seed furrow.

The advantages of the coulter harrow:

• Depth control with a suspended harrow bracket
• Adjustable in seven steps up to 150 mm
• 3 possible intensity settings (30 degrees, 45 degrees, 60 degrees)
• Low lifting power requirement as a result of the compact design