The VARI-CHALLENGER semi-mounted ploughs are equipped with the rear body lift system. This offers many advantages to the user:
The lifting of the body is operated by a spool, always in the same direction, simplifying the manipulations.
The rear body lift is a strong point of the VARI-CHALLENGER since it makes it possible to adapt to soil conditions and to the need for traction while offering the high work rate of a semi-mounted plough.
The VARI-CHALLENGER ploughs are articulated at the axle to allow the whole plough to follow the unevenness of the ground, working like two independant machines. Each section works at equivalent depth to ensure homogeneous work between the front and rear halves.
Thanks to this technology, when working on-land, when the bodies of the front half come out of the earth, the rear bodies are kept at the desired working depth without causing stress to the structure.
When raising the machine, the rear part is automatically realigned with the front to allow a safe and smooth turnover.
In hard or compacted ground, the rear of the plough is constantly kept in the soil thanks to the hydraulic pressure present in the accumulators. It is also possible to stiffen and lock the rear part to improve penetration capacity. Ideal in highly compacted areas (tramlines, headlands, field entrances), this allows the rear part to be kept in the soil whatever the soil conditions.
The VARI-CHALLENGER semi-mounted plough range can be equipped with an on-land kit. The on-land kit offers many advantages as it allows you to make the most of:
The on-land kit ensures a perfect adaptation to working conditions:
On-land ploughing also offers many other benefits such as:
In addition, the turnaround and the unfolding / folding of the machine is done by activating one double-acting distributor from the cab.
Quality ploughing facilitates preparation of the seedbed and reduces energy consumption. Precise and easy to access adjustments allow this goal to be achieved.
The vertical, working depth and offset settings can be adjusted without tools.
Kuhn pride themselves on making ploughs that are simple and easy to use. This is why the VARI-CHALLENGER semi-mounted ploughs are equipped with a turning radius of 110° to limit manoeuvres and facilitate headland U-turns.
The distance between the frame and the first furrow has been specifically designed to avoid any risk of damage to the tractor even in the shortest U-turns.
The increased manoeuvrability of the VARI-CHALLENGER saves time during U-turns at the headland and ensures a clear increase in the work rate.
The plough can be turned around very smoothly and without jolts by means of two large-sized double-acting cylinders. As soon as the plough is lifted up again, the rear part automatically realigns itself, thus avoiding any risk of mishandling when turning round.
The large diameter wheels bring stability to your VARI-CHALLENGER when turning round, and make it easy to pull. The design also ensures the structure is protected during transport.
The hydraulic suspension is permanently active as soon as it comes out of the soil. It protects the structure of the plough when travelling at high speed on the road, in the fields and when making U-turns in the field.
As an option, the LED lighting provides excellent visibility at night on the ploughed land. In addition, it is very convenient for storing the plough on the farm after a long day of ploughing.
Pneumatic braking is also available as an option for added safety when travelling by road (German TUV certification 40km / h).
The design and sizing of the VARI-CHALLENGER range meets the requirements for the most severe and intensive use. The robustness of the structure is guaranteed by a large-sized welded frame. The 220 x 220 mm frame beam offers unmatched solidity on the VARI-CHALLENGER.
The VARI-CHALLENGER semi-mounted plough is carried by an axle consisting of 2 large 1160 x 400 mm wheels with an agricultural profile. The wheels facilitate roll and improves lift and travelling capacity in difficult conditions.
For adaptation to all medium to high horsepower tractors, a wide range of clevis coupling categories are available (categories 3, 4N, 4 and K700).
It is possible to increase the number of bodies of the VARI-CHALLENGER (7 to 10) with the same basic structure.
The VARI-CHALLENGER is the only variable width semi mounted plough on the market, combining a linkage integrated into the frame with a rear body lift. The integral protection of the variable width system ensures exceptional longevity as it is no longer exposed to external aggressions such as:
The variable width is hydraulically adjusted from the driving position from 14’ to 22’ (35 to 55 cm). An indicator of the cutting width is visible from the tractor seat.
For greater peace of mind, this variable width system is maintenance-free. All the pivots are locked in rotation and bushed.
The VARI-CHALLENGER semi-mounted ploughs are equipped with Non-Stop Hydraulic safety devices on each body, guaranteeing increased reactivity for high-speed ploughing without releasing. The NSH safety device brings many benefits for the user:
|VARI-CHALLENGER 8||VARI-CHALLENGER OL 8||VARI-CHALLENGER 9||VARI-CHALLENGER OL 9||VARI-CHALLENGER 10||VARI-CHALLENGER OL 10|
|Composition of bodies (front + rear)||(4+1)+3||(4+1)+3||(4+1)+(3+1)||(4+1)+(3+1)||(4+1+1)+(3+1)||(4+1+1)+(3+1)|
|Maximum tractor power (kW/hp)||265/360||265/360||298/405||298/405||331/450||331/450|
|Approx. weight (kg) for NSH version||6392||6972||6792||7372||7192||7772|
|Working width (cm)||35-55||35-55||35-55||35-55||35-55||35-55|
|Working width (Inches)||14-22||14-22||14-22||14-22||14-22||14-22|
|Underbeam clearance (cm)||80||80||80||80||80||80|
|Point to point clearance (cm)||102||102||102||102||102||102|
|Cross-shaft||Cat.3 as standard (Cat. 4 & 4N on request)||Cat.3 as standard (Cat. 4 & 4N on request)||Cat.3 as standard (Cat. 4 & 4N on request)||Cat.3 as standard (Cat. 4 & 4N on request)||Cat.3 as standard (Cat. 4 & 4N on request)||Cat.3 as standard (Cat. 4 & 4N on request)|
|Hydraulic adaptation||Rear lifting and turnover: SA + DA - Lifting of rear bodies: DA - Electroswitch KTH105 2 fcts: 1 DA (hydraulic front furrow adjustment, variable width)||Rear lifting and turnover: SA + DA - Lifting of rear bodies: DA - Electroswitch KTH105 2 fcts: 1 DA (hydraulic front furrow adjustment, variable width)||Rear lifting and turnover: SA + DA - Lifting of rear bodies: DA - Electroswitch KTH105 2 fcts: 1 DA (hydraulic front furrow adjustment, variable width)|