Harvester Head EC 661 LF Lite - Light and efficient.
Looking for a final felling head that also gives you extended reach?
The EC661LF Lite is a lightweight and efficient head, optimized for Eco Log harvesters and particularly well-suited for the Eco Log 580G and 688G models. Its reduced weight makes it possible to equip these harvesters with an 11-meter boom, providing extended reach and increased overall efficiency in the field.
The head is designed in accordance with SP’s tried and tested Low Friction Principle, which
means minimal friction, maximum production, and optimal fuel efficiency. The SP 661 LF Lite has been developed to
offer the highest quality and productivity in all types of final felling. In heavy final felling, the proportionally angled feed rollers, combined with SP’s patented LogHold system, deliver
maximum capacity and production.
. The agile design comes into its own in small-diameter final felling, and when
equipped with Multi-tree handling, even very small stems can be felled quickly and efficiently.
The SP 661 LF Lite reaches its absolute peak capacity with stems with a diameter of 16–51 cm bhd, but thanks to
the LF principle, it can also handle larger diameter stems efficiently.
1. Optimized for mid-range wheeled harvesters.
2. Energy-efficient with rapid feeding and low fuel
consumption thanks to a new, efficient hydraulic
valve.
3. Lightweight with reduced chassis weight and tilt frame in positions subject to low strain levels.
4. Agile and powerful head for maximum production.
5. Productive with the same great features as the 661 LF in the standard version, but with a lower weight.
6. Multispeed engines as an option for maximum performance regardless of the type of felling.
WEIGHT
Optimum tree size (DBH) for highest productivity
Cutting diameter
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
Roller motors, variable
Max. roller opening
Feed rate
Feed force
Proportional pressures
750 cc
613-920 cc
630 mm
5,5 m/s /4,5-6,7m/s
28 kN/34 kNN
Yes
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
Chain speed
Saw motor
Saw unit
Saw Control
700 mm
810 mm
40 m/s
Bucher 32 cc
Automatic – SuperCut 150
Yes
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.
Floating knives
Fixed knives
Delimbing diameter tip-tip
Min. limb diameter
Proportional pressures
Log Hold
4
1
480mm
30 mm
Yes
Yes
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.
Width closed
Width open
Height, excl. tilt frame
Weight
Weight with top saw,
1360 mm
1820 mm
1730 mm
1480 kg
1595 kg
Base machines: The Eco Log 661 LF Lite is ideal for installation on Eco Log’s harvesters 580G and 688G
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.
