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Forest

Accumulating Energy Wood Head

Forest

Accumulating Energy Wood Head

Naarva E models have been equipped with accumulating grippers that significantly enhance the productivity of small wood harvesting. The accumulation of bunches in an upright position speeds up the work and reduces the number of crane movements required. Tree bunches that are placed by the harvesting track are easy to collect and load. The grapple is balanced and does not tilt forward even when the bunches being accumulated and handled are large. The modular structure of the E models allows flexible combination of the various frame, guillotine, and accumulating grapple options, to form a product that best suits each base machine and purpose.

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Accumulating Energy Wood Head E25

FEATURES

  • Stable handling even with large bundles
  • Excellent loading properties
  • Efficient guillotine cutting, 25-28 cm
  • Easy installation, no additional hydraulics or hoses
  • Radio control option

SUITABLE FOR

  • Energy wood harvesting
  • Small wood harvesting by accumulation
  • Clearing of electricity lines, road sides and field edges

EASY TO MOUNT

Naarva E25 is easy to mount to a forwarder or harvester. It does not require any additional hydraulics. In forwarders you can use loading grapple open /close valve for control and a simple radio control. In harvesters you can use the harvester head control module. PLC logic control systems are also available for harvesters. 

STRONG GUILLOTINE CUTTING

Naarva E25 is equipped with a reliable and durable cutting guillotine. It can cut up to 25 cm thick trees (28 cm with quick guillotine). Cutting blade is made of wear-resistant steel, which is not damaged by sand or rocks. Stumps can be cut close to the ground. You can cut through tree bunches, bushes and hard woods. The guillotine is practically service-free. 

EXCELLENT LOADING PROPERTIES

Naarva E25 is also excellent for loading trees. Guillotine blade is inside the case and not in the way when loading. Grapple opening is 90 cm.

ACCUMULATING GRIPPER OPTIONS

BASIC ACCUMULATING GRIPPER

  • Wide accumulating gripper for larger tree groups or bushes
  • Efficient for roadside clearing
  • Opening 90 cm
  • Suitable for forwarders and excavators

HARVESTER MODEL

  • Size and properties are similar with basic model
  • Casing for harvester hydraulic equipment is in the accumulating gripper

GUILLOTINE OPTIONS

STRONG – MAXIMUM CUTTING POWER

  • Traditional Naarva-guillotine
  • Two-phase cutting
    1. Grippers close around the tree
    2. Cutting cylinder pushes the blade through the tree
  • Max. cutting 25 cm

QUICK – PRODUCTIVITY WITH SMALLER TREES.

  • New innovative Naarva guillotine
  • Cutting with one stroke:
    1. Grippers close around the tree and force the blade through the wood
  • Max. cutting 28 cm
  Strong guillotine,
forwarder hydraulics
Strong guillotine,
harvester hydraulics
Quick guillotine,
forwarder hydraulics
Quick guillotine,
harvester hydraulics
Factory code EL25 EH25 EL28 EH28
Weight 390 kg 430 kg 450 kg 490 kg
Height in felling position 95 cm 95 cm
105 cm
105 cm
Opening of loading grapple/accumulating grippers 90 cm / 90 cm 90 cm / 90 cm 90 cm / 90 cm 90 cm / 90 cm
Cutting diameter*,
force and time**
Max cutting: Ø25 cm
Cutting force: 95 kN
Cutting time: 1.8 s
Max cutting: Ø25 cm
Cutting force: 95 kN
Cutting time: 1.8 s
Max cutting: Ø 28cm
Cutting force: 60 kN
Cutting time: 1.4 s
Max cutting: Ø 28cm
Cutting force: 60 kN
Cutting time: 1.4 s
Required pressure 170-200 bar 170-200 bar 170-200 bar 170-200 bar
Required oil flow 50-90 l/min forwarder hydraulics, 50-160 l/min harvester hydraulics 50-90 l/min forwarder hydraulics, 50-160 l/min harvester hydraulics 50-90 l/min forwarder hydraulics, 50-160 l/min harvester hydraulics 50-90 l/min forwarder hydraulics, 50-160 l/min harvester hydraulics
Warranty 12 months or 1000 hours 12 months or 1000 hours 12 months or 1000 hours 12 months or 1000 hours
Control systemVoltage Cable control with 3 buttons Cable control with 3 buttons Cable control with 3 buttons Cable control with 3 buttons
Voltage 12V or 24V 12V or 24V 12V or 24V 12V or 24V

* The max. cutting diameter is approx. 30% lower for hard wood (such as oak and beech).
** With 70 l/min oil flow
All provided values are approximations. The manufacturer reserves the right to make changes in the products. 04/2011.

  • Radio control for forwarders
  • Extension boom for 8-15 ton excavators, also with hydraulic extension boom
  • Baltrotor rotators
  • Suitable link for rotator
  • Spare part packages
    • The basic wear and tear part package including seal kits, rubber dumper, valve connectors
    • Wide spare part package including basic package + spare parts for valves and complete hose set