Semi-mounted ploughs Diamant

The Diamant semi-mounted ploughs are designed with large main bearings for tractors from 150 hp and are available in 5 to 9-furrow versions. With OptiLine, they feature the first and only adjustment system for semi-mounted ploughs that allows ploughing without side pull. This saves up to 10% fuel.
The Diamant at a glance
Semi-mounted ploughs with adjustment system
The Diamant 16 semi-mounted ploughs with their large main bearings are designed for tractors from 150 hp and are available in 5-9 furrow versions. With OptiLine, they have the first and only adjustment system for semi-mounted ploughs that allows ploughing without side draft. This saves up to 10 % fuel.
Diamant 16
For extreme operating conditions
With 6 to 8 furrows and a solid 180 x 180 x 12.5 mm box section frame, the robust Diamant 18 is specially designed for large tractors with up to 650 hp and for use in extreme conditions.


The extra that makes the Diamant optimal
In-furrow and on-land
Whether on-land or in-furrow ploughing is the better approach depends on a number of factors, including soil condition, the tractor used and personal or farm preferences. Both methods have their advantages.
On-land ploughing results in less ground pressure due to the more evenly distributed wheel load, which positively affects the soil structure. Additionally, the tractor can be fitted with large-volume tyres or dual tyres with an external width of up to 4 m to reduce ground pressure even further. To maintain a sufficient distance from the edge of the furrow and ensure an optimum traction point, the plough frame can be swivelled into two different on-land positions with different offsets when ploughing on-land. Combining on-land ploughing with a GPS track guidance system enables parallel furrows and consistently good alignment, while simultaneously relieving driver strain. Classic in-furrow ploughing is particularly suitable for slopes and damp conditions, when the traction of the tractor is limited.

Smart ballasting for more grip
To reduce slippage and save fuel, Diamant ploughs can be equipped with the OptiTrac traction booster. With this system, an additional hydraulic cylinder transfers weight to the tractor’s rear axle to increase traction. When the plough is rotated, the cylinder is automatically depressurised to improve the stability of the tractor.

No need for counter-steering
When using the in-furrow version with larger working widths, the plough protrudes further to the sides of the tractor. This generates asymmetrical forces that lead to side draught. The optional OptiLine equipment can be used to compensate for the resulting side draught, thus increasing the tractor’s tractive power. To achieve this, OptiLine transmits additional torque to the tractor via a pressure-controlled hydraulic cylinder to balance the lateral forces.

Disruption-free ploughing in all conditions
All LEMKEN ploughs are equipped with an overload protection to prevent damage to the plough body if it hits an obstacle. In the standard version, this system comes in the form of double-cut shear-off protection with shear bolts.
The OptiStone hydraulic overload protection system offers maximum operational reliability. In addition to the hydraulic overload protection, the shear bolt provides protection against damage if the system becomes trapped under rocks or roots. This protects both tractor and plough.


A question of adjustment
Mounting, turning and parking
The Diamant series features a stable headstock that connects the plough to the tractor via a continuous, robust cross shaft. This enables a 90-degree steering angle and therefore allows drivers to work even at small headlands.
The swing gear enables the plough to rotate powerfully and smoothly through 180 degrees with every turn. This process is supported by two single-acting telescopic cylinders with mechanical tilt adjustment. The tilt is adjusted via one screw per side, which serves as a stop for the turning cylinders.The end stops can be removed for smooth attachment and detachment, enabling the plough to be detached without tension.

Depth adjustment
The plough’s working depth is set at the front using the rear lift of the tractor and at the rear using the transport wheel. As standard, it is mechanically adjusted via the transport wheel; mechanical-hydraulic or electro-hydraulic adjustment is available as an optional extra. The relevant shut-off valve is operated manually or remotely. A clear scale facilitates working depth adjustments.

The right connection
The front furrow width is essential for a clean ploughing result. The optional hydraulic front furrow adjustment allows for precise alignment in changing conditions, even while driving.

Transport
For safe road transport, the plough is turned to the centre position and the swing gear is locked via stopcocks. This ensures that the transport wheel runs parallel to the base frame for straight towing behind the tractor. The transport wheel is dampened via an accumulator to absorb larger shock loads and ensure smooth running.


Loosened yet firm
A furrow press and plough make a perfect team for reconsolidation and seedbed preparation at the optimum time. For optimum results, LEMKEN offers a range of furrow presses that can be used during ploughing depending on the soil type, field structure and distance between the farm and field. Furrow presses work directly behind the plough, where they reconsolidate the soil and break down large clumps at the optimal moment and moisture level. This helps the soil to settle and reduces evaporation.
A tried-and-tested duo
VarioPack furrow presses are available for all Diamant ploughs. Various ring profiles and diameters are available to customise the presses for different conditions. The furrow press design without a central axle prevents interior blockages and provides plenty of wear material in the area that gets the most use – the ring itself. This ensures a long service life for the furrow press.
Thanks to the ring construction without individual hubs, the working width of LEMKEN furrow presses can be easily increased or decreased by adding or removing rings, meaning that the presses can be precisely fitted to any plough. Thanks to a trailer device, even working widths of more than three metres are not a problem when it comes to transport – with EU type approval for speeds of up to 40 km/h, the furrow presses can always be driven legally on the road.


It’s in the connection
iQblue connect makes ploughing much easier and more efficient. This system provides support in many ways for the best possible results. It not only ensures greater ease of use, but also offers comprehensive data management and the documentation of working parameters.
With iQblue connect, both new and existing implements can be subsequently digitalised and integrated into the smart world of intelligent technology. Thanks to the interplay between the job computer, sensor kit and GPS technology, the system enables precise, automated control of your tillage operations, resulting in a noticeable increase in efficiency in the field:
- Creation of precise, straight furrows
- Automatic adaptation to the target furrow
- Centimetre-accurate display of the current working width

Communication between the implement and tractor is handled via the ISOBUS TIM (Tractor Implement Management) standard, enabling iQblue connect to control a tractor’s hydraulic functions directly. As a result, the implement is actively integrated into the control process – the implement controls the tractor.
As an added bonus, the job computer can be easily transferred to other machines in just a few simple steps. This makes the system highly flexible and cost-effective – ideal for a wide range of applications and farm sizes.

Do you still have questions?
Our experts will be happy to answer your questions, just send us an e-mail!

Martin Kannen
Ploughing expert