The novel design of the drive train allows the ideal torque distribution to front and rear wheels for optimal traction and tractive power. The drive train is based on a hydraulic pump and two hydro motors. The first hydro motor supplies the rear axle with uninterrupted torque via hydrostatic-mechanical power splitting from 0 km/h to 60 km/h. The second hydraulic motor serves the front axle. Through feedback to the rear axle, from the ground or through the intelligently controlled four-wheel clutch, the front axle drive also becomes part of the hydrostatic-mechanical power splitting.
Drives your success – at full power.
From Vario to VarioDrive
The Fendt Vario stands for stepless, dynamic driving with plenty of engine power at any speed from 0.02 km/h to 60 km/h. The new Fendt 1000 drive has been specifically developed with the aim of transmitting high engine horsepower in any situation, regardless of ground conditions, and therefore keeping the engine speeds very low. The solution: Fendt VarioDrive – the drive train that drives both axles independently for the first time.
VarioDrive drive train – a master in power distribution
Masterpiece with grip(s)
During field work, torque is transferred when needed to the axle with grip tyres. The result is tremendous pulling power. As the speed increases, a clutch completely decouples the front axle drive at approx. 25 km/h – this eliminates drag losses in the drive train and increases efficiency.
New, larger high-capacity 370 cm³ hydrostats ensure very high
transmission efficiency. The separate oil supply protects the gearbox
against oil mixing and contamination.
Tightest turning circle, with 'pull-in-turn'
As there is no fixed forward ratio due to the variable 4WD, the front wheel drive is able to actively pull the tractor into the turn – the 'pull-in turn' effect. This effect alone reduces the turning circle on the field by up to 10%. VarioDrive minimises the otherwise usual tyre wear on the front tyres caused by cornering on firm substrates.
Small turning radius thanks to "pull-in turn" effect, e.g. 6.97 m for the Fendt 1038 Vario with standard tyres.
Power distribution through Fendt Torque Distribution
The flexible torque distribution of the variable fourwheel drive is achieved through a T-piece, which is located between the hydraulic pump and the hydraulic motors for the front and rear axles. It acts as a hydrostatic differential between the axles and permits the oil flow between the pump and hydraulic motor to be adjusted freely. As a result, there is no tension. If needed, torque can be automatically shifted from one axle to the other via the intelligently controlled four-wheel clutch. Frictional loss and wear are reduced effectively.
Variable 4WD: Gives you 500 hp
Conventional four-wheel drives usually have a fixed torque ratio between the front and rear axle. Fendt VarioDrive enables a variable four-wheel drive. The torque is essentially distributed to both axles via two gearbox outputs. Thanks to the intelligently-controlled 4WD clutch, torque displacement takes place when required between the axles. This is called Fendt Torque Distribution.