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SP 661 E - Productive and reliable debarking

The SP 661 E is designed for one task only – one pass debarking of plantation grown eucalyptus. Highest debarking quality and productivity is achieved through a unique combination of specially designed debarking knives, replaceable bark deflectors and high-speed feeding capabilities. Thanks to the proportional pressure function on knives and feed rollers the debarking process can easily be perfectly adjusted for different conditions, resulting in the best possible debarking quality and a minimum of fiber damage.

The SP 661 E also offers an unrivalled reliability and uptime thanks to the state of the art hose routing in combination with the very rugged and protected design. The SP 661 E truly is a productive and reliable debarking harvester head.

The SP 661 E reaches top performance in stands with a diameter of 10 to 25 cm bhd, but is thanks to the LF principle also capable of efficiently working with larger tree sizes.


All of our harvester heads have smart, useful functions. More information will be available soon.

Technical data

Learn more about the technology behind our various harvester heads. Here you will find everything from information about cutting and delimbing to weights and dimensions.


Min. pump capacity: 200 l/min
Rec. working pressure: 25-30 MPa


Proportional clamping pressure of the feed rollers, individual settings for different species for optimum performance.
Feed motors: 565 cc
Min feed roller opening: 20 mm
Max feed roller opening: 630 mm
Max feed force: 21,4 kN
Max feed speed: 7 m/s
Proportional pressure:: Yes

Felling / Cutting

The SuperCut 150 is a very robust and powerful saw unit with integrated chain lubrication and automatic hydraulic tensioning of the chain. Together with SP´s QuickCut system this ensures an optimized cut and a minimized risk of cutting cracks.
Cutting diameter: 550 mm
Chain speed: 40 m/s
Saw motor: 32 cc
Saw unit: SuperCut 150
QuickCut: Yes


Proportional pressure on debarking/delimbing knives, individual settings for different species for optimum performance.
Movable knives: 3
Fixed knives: 2
Fixed bark deflectors: 2
Minimum delimbing/debarking diameter: 27 mm
One pass debarking diameter range: 27–250 mm
Proportional pressure: Yes
LogHold: Yes

Weight and dimensions

Width closed: 1360 mm
Width open: 1820 mm
Height: 1730 mm
Weight: 1520kg


The SP 661 E can be installed with excellent result on both wheel based carriers, excavators in the 14-25 ton range as well as tracked harvesters.
Tree sizes
Optimum tree size dhb*: 10-25 cm
Max. rec. tree size dbh*: 40 cm
* Diameter measured at chest height (1,3 m up from the ground)

We reserve the right to change specifications and design. Harvester heads pictured may have some extra equipment. All stated measurements/values are approximate and refer to standard equipment.

Control system

SP harvester heads can be installed on machines equipped within any of the following control systems.

Dasa4 Compact
Dasa Forester*
John Deere Timbermatic 300/3000
Motomit IT
Motomit PC
Komatsu MAXI
Techno Matic
Technion till SP461LF *

* A complete control system can be supplied by SP

Control system