The head of the new generation Nisula 555H harvester offers unique properties for the thinning and final breakdown of small-stemmed supports.

The quality of manufacture and materials of the head are of the standard that Nisula is known for. Given its properties, the head is exceptionally light, only 810-840 kg, depending on the equipment. 555H now offers numerous properties: completely new hydraulics for heavy flows, efficient Nisula NSU saw assembly, bolt-mounted saw housing equipped a blade lubrication reservoir and Nisula Goldfinger patented guillotine cutting function. This harvester head has properties that improve cost efficiency.

The NCU3 control system adjusts the gripping force of the head according to the size of the stem to be manipulated. As larger trees are felled and heavier stems are handled, the gripper arms apply a strong grip to the stem.

When feeding begins, the gripping force is reduced to minimize friction. The control system has a diameter limit set to reduce the gripping force. The gripping force of the additional blade is controlled proportionally. If necessary, the settings can be adjusted via the control system, but usually the harvester head works best with the standard settings