The Nisula 425H is a thinning harvester head equipped with additional knives. The harvester head processes the stem in a controlled manner. A new type of head control improves the speed and precision of the process.
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. The additional knives of the new 425H head increase productivity with even larger stems, something that harvester heads in the same weight category are not able to achieve. The additional knives also allow a larger delimbing diameter. The head is a most suitable choice for thinning.
Thinning
Delimbed energy wood processing
Light harvesters
Farm tractors equipped with an adapter sleeve mounted crane
Light forwarders with head change facility
Lighter than 12-ton excavators
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
Saw control
Automatic chain adjuster
Colour marking
Stump treatment facility
Separate chain lubrication function
| Weight | 410kg |
| Clean delimbing Ø | 320mm |
| Single cut Ø (1 stem) | 425mm |
| Number of delimbing knives | 4 + 1 |
| Opening of front knives | 430mm |
| Opening of additional knives | 580mm |
| Width in delimbing position | 1100/940mm |
| Height in delimbing position | 880mm |
| Height in felling position | 880mm |
| Operating pressure | 210bar |
| Required oil flow | 120-150l/m |
