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Forest

Nisula 425C is a multi-purpose harvester head

Forest

More properties to enhance harvesting operations

Nisula 425C is a multi-purpose harvester head equipped with grapple arms that make timber handling and sorting effortless. The NCU3 control system adjusts the grip force of the grapple arms to the tree stem, enabling a firm grip during felling, feeding and other operations. In combi-machine use, the separate grapple arms also allow loading without changing the head.

When larger trees are felled and heavier stems handled, the grapple arms apply a strong grip to the stem. When feeding starts, the grip force is reduced to minimise friction. The control system has a diameter limit set for the utilisation of the grapple arms during harvesting operations. If necessary, the settings can be adjusted via the control system, but usually the harvester head works best with the standard settings.

The new stronger drive motors increase the feeding capacity by 20% compared with the previous model. The new machined front knives provide improved delimbing efficiency and durability as well as a larger delimbing diameter compared with the previous C-model. 425C offers additional properties for thinning.

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More properties to enhance harvesting operations

USES:

Thinning
Delimbed energy wood processing
Combi-machine use

SUITABLE BASE MACHINES:

Light harvesters
Farm tractors equipped with an adapter sleeve mounted crane
Forwarders in combi-machine use
Lighter than 12-ton excavators

CONTROL SYSTEM ALTERNATIVES:

NCU3Lite with length and diameter measurement function
NCU3 with length and diameter measurement function + cubic volume measurement function
NCU3i with length and diameter measurement function + cubic volume measurement function + value scaling function
NCU3X with length and diameter measurement function + cubic volume measurement function + value scaling function + data transfer facility
Compatibility with Motomit control systems

Weight, kg 425
Clean delimbing Ø, mm 300
Single cut Ø, mm (1 stem) 425
Number of delimbing knives 2 + 1
Opening of front knives, mm 430
Opening of grapple arms, mm 920
Width in delimbing position, mm (open/closed) 1100/940
Height in delimbing position, mm 880
Height in felling position, mm 880
Operating pressure, bar 210
Required oil flow, l/m 120-150

 

Saw control
Automatic chain adjuster
Colour marking
Stump treatment facility
Separate chain lubrication function