Harvester head EC 661 LF
he Eco Log 661 LF is a high-performance harvester head that offers the highest levels of quality, strength, and productivity in all types of final felling. In large-diameter final felling, the proportionally angled feed rollers, in combination with the patented LogHold system and Eco Log Saw Control, deliver the highest capacity and production. In final felling of low-grade timber, the versatile design comes into its own and ensures high levels of efficiency and rapid feeding.
The low friction concept (LF), combined with extremely well-protected, smart hose routing, paves the way for minimum friction, the least possible downtime, maximum uptime, and maximum productivity. In addition, the harvester head’s variable roller motors generate an optimum balance between strength and speed in both low-grade and large-diameter stands.
The Eco Log 661 LF meets every challenge – flexibly, robustly, and efficiently.
Optimum tree size (DBH) for highest productivity
Recommended working pressure
Proportional roller clamping pressure in relation to stem diameter, as well as individual setting by tree species for optimum performance.
Roller motors, variable
Max. roller opening
5 m/s /4,1-6,1 m/s
28 kN/34 kNN
SuperCut 150 is an extremely powerful unit with integrated chain lubrication and hydraulic tensioning of the chain. In combination with Eco Log Saw Control, the cutting time is optimized and the risk of cutting cracks is minimized. In combination with Eco Log Saw Control, the cutting time is optimized and the risk of cutting cracks is minimized.
Cutting diameter, standard
Cutting diameter, option EC saw box
Bucher 32 cc
Automatic – SuperCut 150
Proportional delimbing knife pressure in relation to stem diameter for minimum friction and maximum production. Individual setting of upper/lower knife/knives and by tree species for optimum performance.
Delimbing diameter tip-tip
Min. limb diameter
Despite its capacity to handle large-diameter trees, the EC 661 LF’s compact dimensions mean that it is suitable for more than just large-diameter final felling.
Height, excl. tilt frame
Weight, excl. rotator
Weight with top saw, excl. rotator
Base machines: The Eco Log 661 LF is ideal for installation on Eco Log’s harvesters 580 & 590.
Felling: Proportional roller clamping pressure in relation to stem diameter, as well as individual setting by tree species for optimum performance.
Recommended stem diameter (BHD) for maximum productivity* 16 – 51 cm.
Breast height diameter, measured 1.3 m up the stem.
We reserve the right to make changes to specifications and versions. The harvester heads depicted may have some additional equipment. All specified dimensions/ values are approximate and refer to standard equipment.
Maximizes productivity in every cut
All of Eco Log´s harvester heads have been equipped with Eco Log Saw Control, a patented system that ensures a maximum performance from both machine and harvester head in every cut. The system continuously adapts the guide bar feed, and as a result each cut is optimized irrespective of tree species, stem diameter, chain sharpness or how much power the machine is providing.
A link between the machine and the harvester head ensures that every cut is performed with as high efficiency as possible, where the system continuously optimizes the values regarding to external conditions without the operator needing to change any basic settings manually. It makes no difference if the harvester head is used in mixed forest, in final felling or if you process a spruce with your first cut immediately followed by a birch. Eco Log Saw Control ensures that your felling is fast, smooth and efficient at all times.
Eco Log Saw Control
- The harvester head continuously adapts to current conditions and delivers guide bar pressure and guide bar feed irrespective of tree species.
- Links the saw and machine for optimal performance and efficiency from both harvester head and harvester.
- Minimizing the risk of cutting cracks and generates time savings and efficiency thanks to high cutting speed.