This system has come to prevail over other umbilical systems in recent years. The rail-system is replaced by an arm connected to the front linkage and the tractor’s front-loading system to optimise weight distribution.
With longer track lengths, this system applies less pressure on the rear axle and more pressure on the front axle of the tractor. As a result, the tractor can be operated with substantially lower tyre pressure, which in turn reduces soil compaction. The arm can be swivelled by 360˚ to ensure it is always positioned in an optimal line of traction and reduces maximum loads from the hose at the headland.
Another advantage is that brake pedals no longer need to be adjusted when turning or working at the headland. Also, there is no need for operators to control the swivel arm separately during application, and they are therefore able to focus fully on driving. The end section of the swivel arm is height-adjustable, which allows the load distribution between the tractor’s front and rear axle to be adjusted as well. This is ideal for long track lengths! As the injector disc pressure can be controlled proportionally from the cabin, the pressure applying on the rear axle of the tractor can also be adjusted. This combination of technologies and low tyre pressure allows trail distances that used to be considered unachievable. The swivel arm no longer exerts any tractive forces on the injector, which extends the injector’s lifetime. Finally, the straightforward design minimises maintenance costs.