Forest thinning felling head 500C

with delimber

500C is a powerful alternative for later thinning and final felling of small stems. The physical dimensions are suitable for a thinning head, and, thanks to high-quality frame materials, the weight is also low, only 650 kg. Nisula 500C is a multi-purpose harvester head equipped with grapple arms that make handling and sorting timber effortless. The NCU3 control system adjusts the grip force of the grapple arms to the tree stem being handled, enabling a firm grip of the stem during felling, feeding and moving operations. In combined use, the separate grapple arms also allow loading without changing the head. When larger and heavier trees are felled and moved, the grapple arms together with the front and rear knives and the roll cylinder apply a strong grip force on the stem. When feeding starts, the grip force is reduced gradually to minimise friction. The control system has a diameter limit set for reducing the grip force. If necessary, the settings can be adjusted via the control system, but usually the harvester head works best with the standard settings.