TwinTeC-Schar – The effective double disc coulter

Inside view of the maintenance-free TwinTeC double disc coulter
1. Adjustable harrow: the angle of attack is adjusted according to the degree of straw residues present.
2. Perfect parallelogram with the top link for central adjustment of the sowing depth from 0 to 6 cm.
3. Centralised, 100% independent adjustment of the placement depth and the coulter pressure.
4. TwinTeC coulters mounted on rubber elements for shock absorption and central adaptation of the coulter pressure from 0 to 60 kg.
5. Protective steel front plate.
6. Removable shims to compensate for disc wear.
7. Discs fastened at 5 points with recessed Torx screws. No wear on the fixing discs.
8. Maintenance-free bearings. No lubrication points for the maintenance-free coulter.
9. Double disc ∅ 340 mm, angle of 10°, row spacing 12.5 and 15 cm. 
10. Internal scraper – optionally in a HD variant.
11. Depth control /Press rollers: 50 or 65 mm wide (optional scrapers).

Precision performance with a coulter pressure of up to 60 kg

Equipped with the high-performance TwinTeC coulter, the seed drill has a precise and robust double disc coulter. With a disc diameter of 340 mm and a coulter pressure of 60 kg, the coulter achieves very precise and neat seed placement, even at higher speeds and in inconsistent soils. Thanks to the parallelogram guidance of the coulter, the coulter pressure and the placement depth can be adjusted independently, so that optimum seed placement is ensured. The coulter impresses with its smooth running, even under the most difficult of conditions.

Advantages of the double disc coulter:

• Its highest levels of flexibility permit central independent adjustment of the placement depth and the coulter pressure
• High-precision seed placement as a result of its very smooth and tidy running
• Consistent sowing depth with a high constant 
• coulter pressure of up to 60 kg
• Best ground contour following for the coulter, based on the parallelogram coulter guidance
• Simple central working depth adjustment
• Reliable blockage-free sowing, even under difficult conditions, as a result of the high throughput ability

Central setting of the sowing depth

A depth guidance roller behind each TwinTeC coulter provides precise depth guidance, thereby ensuring that the placement depth of each individual TwinTeC coulter is maintained. Thanks to the large coulter clearance of 195 mm and the linkage to the depth guidance roller via the top guided roller carrier, sufficient space remains, meaning that blockage-free operation is possible. Due to the narrow angle of attack of the
sowing discs of 10°, excellent material passage is ensured even at high forward speeds and with large amounts of crop residues.

Two different depth guidance rollers are available. The Control 50 mm depth guidance roller has a high through passage and is ideal for heavy, hard soils. On the other hand, the Control 65 mm depth guidance roller offers a higher carrying capacity, which is ideal for lighter soil types.