Coulters | Harrows

RoTeC-Control-Schar – Das unviverselle Einschabenschar (1) RoTec-Schar_91_d1_200310

RoTeC Control coulter – The universally-usable single disc coulter

Goes right up to the limit of practical operation and placement: RoTeC Control coulters are maintenance-free and work extremely well yet with little wear and tear. Even where large amounts of straw and trash prevail they won’t block up. The combination of the sowing disc on the one side and the furrow former on the other create the perfect seed furrow and optimum seed control. The elastic polyurethane disc also helps to create the seed furrow, accurately controls the pre-set sowing depth and prevents soil from sticking to the sowing discs.


Quality and reliability throughout:

  • Coulter discs made from high grade Boron steel for an even more prolonged service life
  • Wear-resistant and self-cleaning Control 10 depth guidance discs and Control 25 depth guidance rollers for the exact adjustment of the placement depth
  • Decoupling coulter guidance and reconsolidation for a smoother coulter run and a universal response to the weather conditions


The maintenance-free RoTeC pro single disc coulter
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" 25 mm or 10 mm depth control and cleaning roller for an even planting depth.
4. Furrow former for a clean profile seed furrow.
5. Seed guide tube up to the furrow former for even seed placement.
6. Sowing disc ∅ 320 mm made of boron steel, working angle of 7°, for smooth operation of the coulter.
7. Exact harrow for excellent seed coverage.

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Depth guidance

One of the unbeatable advantages of the RoTeC Control single disc coulter is that it is uncoupled from the coulter guide and the reconsolidation system. This means that the coulter is raised only once when passing a stone. Furthermore, the coulter and roller pressure can be adjusted independently of each other. This very even and accurately controlled way of guiding the RoTeC Control single disc coulter is ensured by the Control 10 depth guidance roller with its 10 mm wide contact area or the Control 25 depth guidance roller with its 25 mm wide contact area directly at the coulter.

The basic setting of the sowing depth takes place without tools and in 3 steps, directly on the coulter. Detailed infinite adjustment then takes place via the coulter pressure.

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Schardruckverstellung (1) Schardruck_Andruck_d1_151006

Coulter pressure adjustment

The coulter pressure is infinitely adjustable, either mechanically or hydraulically, and is used for easy adjustment of the sowing depth, allowing for rapid adjustment to the corresponding soil conditions.

RoTeC Control coulters operate at a coulter pressure of up to 35 kg.

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Seed embedment with WS Suffolk coulters for drilling after the plough

Robust and precise: The WS coulter is particularly suitable for single-pass ploughing and sowing, or if there is only a little straw, e.g. after rape or turnips. The hard cast coulter tip enjoys an enormous service life. For larger farms with hardwearing soils, the quick coulter tip change, where replacement is necessary, is possible by removing just one bolt.

The 3-row layout and the large coulter stagger prevent blockages in amongst the coulters. A funnel in the coulter guides the seed precisely down into the coulter tip. The back-up flap prevents the coulter outlet from being blocked when the machine is set down.

For WS suffolk coulters, the row spacing is 12.5 cm.


  1. Coulter backup flap
  2. Cast metal coulter tip
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Säbelscharspitze (1) D9-AD3_0028_frei

Sabre coulter tip

The sabre coulter tip was developed for very shallow seed placement on light soils or for mulch sowing with an average amount of prevailing straw. It can be replaced with the WS tip with very little effort.

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Band sowing shoes

Band sowing shoes are easy to attach and allow the seed to be divided into strips as well as helping to reduce the placement depth.

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Exact harrow – perfect seed furrow covering

The Exact harrow covers and levels the open seed furrow without blockage even with large amounts of straw present. With its individually pivoting harrow elements, the Exact harrow follows the undulations of the soil perfectly, ensuring an even seed coverage on soils either with or without straw.

The harrow pressure is set without tools via the setting lever. On the hydraulic harrow pressure adjustment, a pair of locating pins predetermines the minimum and maximum settings. This way both the harrow and the coulter pressure are linked together and so can, during operation, be adapted to changing soil conditions by the use of just one tractor control valve.


  1. Hydraulic, centralised coulter pressure adjustment
  2. Exact harrow
  3. Hydraulic, centralised harrow pressure adjustment
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Coulter pressure adjustment for the Exact harrow

On the AD-P Special, the coulter pressure is mechanically adjusted, centrally. As an option, hydraulic coulter pressure adjustment is available. For ISOBUS machines with hydraulic coulter pressure adjustment, a sensor that triggers an increase in seed rate is available as an option.

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Pre-emergence markers

When creating tramlines, the marker discs automatically lower and mark where the tramline will be created. This means that the tramlines are visible prior to the seed emergence.

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Roller harrow – adding additional reconsolidation to the soil

The Roller harrow additionally consolidates the soil above the seed furrow resulting in the optimum germination conditions. This is recommended especially for light, dry soils when sowing spring crops or rape.

An undulating surface profile that reduces erosion is the result. The Roller harrow, adjustable separately from the coulter pressure, can follow the ground contours over a range of ± 100 mm.


  1. Series of holes for the adjustment of the drag tine harrow
  2. Drag tine harrow
  3. Roller harrow
  4. Mechanical, centralised harrow pressure adjustment
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Harrow adjustment

Stepless adjustment of the Roller harrow via spindles.

The centralised adjustment of the Roller harrow is carried out via the adjusters with overload safety device. In this way, the intensity of the pressure on the rollers on the Roller harrow can be adjusted to suit soil conditions or the press rollers can be taken out of work altogether. So, the press rollers can, for instance during late autumn sowing in wet conditions, be lifted out completely. The drag tine harrow can be accurately adjusted via a hole pattern.

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Related links

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