In the heart of the Netherlands, a revolution in agricultural machinery is taking root. Graafstra Machinebouw, a Dutch manufacturer known for its innovative approach, has introduced the Agra-Trac hybrid tool carrier, marking a significant leap in farm technology. This versatile machine has recently begun its field trials, showcasing a blend of power, precision, and adaptability that could redefine crop care and sowing operations.
At the core of the Agra-Trac is a hybrid drive system, powered by a 60 hp three-cylinder Perkins engine. This engine doesn’t directly drive the wheels; instead, it powers a generator that feeds electric wheel motors. This design choice offers several advantages. Electric motors provide high torque from a standstill, ensuring the Agra-Trac can handle heavy loads and challenging terrain with ease. They also offer precise controllability, allowing for delicate operations that demand finesse. The hybrid system is not just about efficiency and power; it’s about creating a machine that can adapt to the farmer’s needs with unparalleled versatility.
The Agra-Trac’s versatility is further enhanced by its permanent four-wheel drive system. Each wheel receives equal traction, akin to a permanent limited-slip differential. During steering, the drive adjusts to allow for differential behavior, ensuring smooth turns and maneuverability. Despite being electrically driven, the Agra-Trac retains a hydraulic system. Powered by the same engine, this system operates external functions like cylinders, hydraulic motors, and the lifting mechanism, ensuring compatibility with standard implements.
One of the standout features of the Agra-Trac is its stepless track width adjustment. Ranging from 1.80 to 4.60 meters, this feature eliminates the need for track rods. Instead, the system measures wheel position to ensure correct alignment, making it easier to adapt to different tasks and terrains. This feature, combined with the ability to drive sideways, makes the Agra-Trac particularly valuable in tree cultivation. It simplifies connecting and disconnecting implements and allows for precise operations in confined spaces.
The Agra-Trac’s design also caters to orchard and tree cultivation work. With a ground clearance of 2 meters, it can navigate uneven terrains with ease. The wheels can rotate 180 degrees, enabling sideways driving with a fixed track width of 3.50 meters. This mode is expected to be particularly useful in tree nurseries, where space is often at a premium.
The Agra-Trac’s operator station is designed with ergonomics and functionality in mind. The operator enjoys excellent visibility of the work area. On the right, a digital dashboard/computer displays key settings. Driving and operating the hydraulic functions are managed via a joystick, with freely programmable buttons for customizable control. This user-friendly design ensures that the operator can focus on the task at hand, rather than wrestling with complex controls.
The Agra-Trac, with its unladen weight of around 5 tons and an indicative price of approximately €160,000, represents a significant investment. However, its versatility, efficiency, and precision could offer a high return on investment for farmers looking to streamline their operations. As the Agra-Trac continues its field trials, it’s clear that Graafstra Machinebouw has set a new benchmark in agricultural technology. The future of farming is here, and it’s electric, efficient, and incredibly versatile.