SP 661 LF logo

SP 661 LF - Compact, strong and productive

The SP 661 LF is a compact and strong high performance harvester head designed according to SP´s Low Friction principle for minimum friction and maximum productivity. The SP 661 LF is designed to be able to offer highest productivity in both small and large diameter harvesting.

In large diameter harvesting the proportional angled feed rollers in combination with SP´s patented knife control system LogHold, ensures an impressive capacity and productivity. When harvesting smaller diameter trees the compact and agile design is a great asset. Equipped with the optional Multi tre handling equipment the SP 661 LF is able to reach highest productivity also when harvesting very small tree dimensions.

The extremely protected and robust design in combination with state of the art hose routing ensures highest reliability and uptime regardless of tree size and harvesting condition. The SP 661 LF is without a doubt both compact, strong and productive. The SP 661 LF reaches top performance in stands with a diameter of 16 to 51 cm (6 – 20”) dbh 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: 26-30 MPa


Proportional clamping pressure of the feed rollers in relation to trunk diameter, individual settings for different species for optimum performance.
Roller motors: 680-820cc
Max. opening: 630 mm
Feed speed: 0-6 m/s
Feeding force: 33 kN
Proportional pressure:: Yes


The SuperCut 150 is a very powerful saw unit with integrated chain lubrication and hydraulic tensioning of the chain. Together with SP’s QuickCut, this optimises cutting time and minimises the risk of cutting cracks.
Cutting diameter: 700 mm
Chain speed: 40 m/s
Saw motor: 32 cc
Saw unit: SuperCut 150

Top saw (option)

Cutting diameter: 350 mm
Chain speed: 40 m/s
Saw motor: 20 cc
Saw unit: JPS


Proportional pressure on delimbing knives, individual settings for different species for optimum performance.
Movable knives: 4
Fixed knives: 1
Delimbing dia. incl. lower knife 510 mm
Minimum delimbing diameter: 30 mm
Proportional pressure Yes
LogHold: Yes

Weight and dimensions

In spite of its large timber handling capacity the SP 661 LF has a minimum width of only 1360 mm which makes it suitable for more than just large diameter cuttings.
Width closed: 1360 mm
Width open: 1820 mm
Height: 1730 mm
Weight: 1450kg


The SP 661 LF can be installed with good result on both large wheel based carriers, excavators in the 16-25 ton range as well as tracked harvesters.
Proportional pressure on delimbing knives, individual settings for different species for optimum performance.
Optimum tree size (DBH) for highest productivity*: 16 - 51 cm
* Diameter at breast height, measured 1.3 m up the trunk.

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.

LF – Maximum production and minimum friction

LF stands for “Low Friction” and refers to the very low friction that arises between trunk and harvester head in the LF series. LF minimises the friction during feeding, thereby maximising the harvester head’s performance and production. The low friction also minimises damage to the trunk, wear on the harvester head and fuel consumption.

The LF harvester heads have a low weight in relation to their capacity, and their compact design means that they can also be manoeuvred easily in dense stands. LF comprises four smart systems that help to minimise friction and maximise production.

Accessories and equipment

All of our harvester heads come with a high level of equipment as standard. However, a number of different accessories are available in order to optimise the harvester head for different needs, carriers and felling conditions. The most common accessories are described below.

For more information about accessories, please contact your nearest SP dealer or SP Maskiner.

Color marking

Multitree equipment

Find end sensor

Top saw

Multi speed feeding

Spotlight in saw box


EC - Extended cut

Eucalyptis debarking kit

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