The Kuhn disc mowers “Gmd 9530 Rv”, with double auger rake, and the “Gmd 15030”, with a working width of 14 and a half metres, are the equipment with which Kuhn is looking at contractors and large forage farms
With a little imagination, the acronym “GMD” could stand for “Good Mowing Device.” In reality, the acronym chosen by Kuhn for the “GMD” series mowers stands for “Girofaucheuse multi-disques,” or “multi-disc mower,” a term referring to two rear-mounted models, the “GMD 9530 RV” and the “GMD 15030,” which deserve special attention. They share many common features and are both aimed at large farms specializing in haymaking and professional contracting, but they differ not only in size but also in construction details.
The “GMD 9530 RV” is a disc mower with a double-auger rake and a maximum working width of nine and a half meters. It can combine mowing and windrowing in a single pass, resulting in increased productivity. The “Gmd 15030” is a mowing-only machine that stands out for its 14.5-meter working width, making it a true flagship in the industry.
Common features of the two machines include components made from high-strength steels that minimize maintenance and maximize service life, and maintenance-free “Optidisc Elite” cutter bars, which feature the “Fast-Fit” quick-attach blade system. The bars are also designed to provide the best possible cutting quality even in a variety of conditions, thanks to a suspension adjustment system managed by hydraulic-pneumatic accumulators that optimizes both ground contouring and ground pressure. This ensures mowing is always performed with maximum respect for the grass cover and cleanliness of the crop.
The smoothness of the “Optidisc Elite” cutter bars is further enhanced by the exclusive “Lift-Control” system, which combines hydraulic bar lift with a “Non-Stop” safety device. If the blades encounter an obstacle, the cutting unit rotates backwards and automatically returns to the working position once the obstacle has been overcome.
Another common denominator is the foldability of the equipment to comply with the size requirements of the Highway Code during transport. The most significant technical difference between the two models is the presence of the aforementioned double auger system in the “Gmd 9530 Rv.” This system, in addition to allowing mowing and windrowing in a single pass, also allows for the possibility of varying the windrow width from one and a half meters to two meters thanks to the cutting unit staggering system.
This capability is particularly appreciated when switching between different types of forage. In the field, the two augers are also operated separately via a system that combines the action of a universal joint and dedicated gears, while also offering maximum safety thanks to the presence of shear bolts and an automatic cam clutch. Finally, their reduced weight allows these windrowers to be paired with 200-horsepower tractors, requiring greater power only in particularly challenging field conditions.
Working width, adjustable from the in-cab terminal, ranges from a minimum of nine and ten centimeters to a maximum of nine and a half meters, making the “GMD 9530 RV” an optimal solution when combined with the “GMD 3125 F” front-mounted units, also from Saverne. These can also be paired with the “GMD 15030” mowers, equipped with four aligned cutter bars, each supporting seven discs. The bars adapt to the ground using articulations that smooth out the oscillations of the different mowing sections.
Regarding in-cab terminals, the operator can choose between the simple and intuitive “KFA 12” terminal or the “Isobus Mower Control” kit, which allows for control of all the implement’s functions via a joystick, conveniently managing both headland management and folding and unfolding procedures. Finally, the tractor’s power requirements are also important. Compared to the “Gmd 9530 Rv” the “Gmd 15030” are more demanding, requiring output of around 230 horsepower, which varies depending on the conditions.
Translation with Google
