Wheel Drive Solution for Self Propelled Sprayers

A new range of variable displacement motors from SAI reinvents what a wheel drive can do. Their extremely high flexibility in terms of torque and speed offer fantastic power regulations possibilities, making them the complete solution to increase the productivity of agricultural machinery such as crop sprayers. SAI manufactures the whole radial piston hydraulic motor with continuous variable displacement, with feedback provided on the actual displacement.

It is possible to optimize the traction of each single wheel based on the type of slope and the soil conditions.

The displacement of the motors can be improved to facilitate the steering radius and to minimize the damages on the soil.

The high efficiency offers a high starting torque, and the ability to use the motors at reduced minimum displacements: the downsizing of the hydrostatic transmission and of the cooling system helps to minimize the soil compression and enables the use of sprayers even on very steep slopes.

The motor is able to vary its displacement continuously in full power, to reach every single wheel torque limit, to prevent spinning the wheel and avoiding the need for expensive alternative circuitry, such as the inclusion of flow dividers or by connecting the motors in series.

With safety being a major factor, when maneuvering on steep slopes the operator can reduce or increase the displacement as required, thereby boosting the braking torque on any individual wheel accordijng to the current specific needs.