- Home
- Companies
- SP Maskiner AB
- Products
- SP Maskiner - Model SP 561 LF - ...
SP Maskiner - Model SP 561 LF -Harvester Head
The SP 561 LF is a high-performance all-round harvester head. It is designed according to the LF principle for maximum productivity. The SP 561 LF is specifically designed for varied jobs and offers very good characteristics all the way from first thinning to medium final cut. The compact measurements in combination with a perfect delimbing down to 30mm make sure that the first thinning can be done fast and efficient with the highest quality. In final cutting, i.e. when handling large diameter trees, the smart SP patents LogHold and proportionally angled feed rollers turns the SP 561 LF into a harvester head with an impressive capacity/weight ratio and unrivalled productivity. The SP 561 LF is without a doubt both compact, broad and versatile. SP 561 LF reaches top performance in stands with a diameter of 12 to 43cm dbh but is thanks to the LF principle also capable of efficiently working with larger tree sizes.
- 980kg: Weight
- 60cm: Cutting diameter
- 12-43cm: Optimum tree size (DBH) for highest productivity
- 23-28MPa: Recommended working pressure
Hydraulics
- Min. pump capacity: 195 l/min
- Rec. working pressure: 23-25 MPa (625 cc roller motor)
- 23-28 MPa (514 + 560 cc roller motor)
Feeding
Proportional clamping pressure of the feed rollers in relation to trunk diameter, individual settings for different species for optimum performance.
- Roller motors: 514, 560 or 625 cc
- Max. opening: 500 mm
- Feed speed: Roller motor 514 cc = 6.0 m/s
- Roller motor 560 cc = 5.4 m/s
- Roller motor 625 cc = 5.0 m/s
- Feeding force: 25 kN
- Proportional pressure: Yes
Cutting
The SuperCut 100 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: 600 mm
- Chain speed: 40 m/s
- Saw motor: 20 cc
- Saw unit: Automatic - SuperCut 100
- QuickCut: Yes, with Dasa control system
Delimbing
Proportional delimbing knife pressure in relation to trunk diameter for minimum friction and maximum production. Individual setting of upper/lower knives and for different tree species for optimum performance.
- Movable knives: 5 incl. top knife
- Fixed knives: 1
- Delimbing diameter tip to tip: 430 mm
- Min. delimbing diameter: 30 mm
- Proportional pressure: Yes
- LogHold: Yes
- Separate knife control: Yes
Weight and dimensions
With compact dimensions and a very low weight in relation to its high capacity, the SP 561 is perfectly suited for a range of felling jobs.
- Width closed: 900 mm
- Width open: 1500 mm
- Height: 1500 mm
- Weight: 980 kg
Recommendations
Carriers
The SP 561 LF can be fitted to a variety of different carriers, such as conventional forest machines, excavators and forestry tractors. In order to ensure good function, please consult your nearest SP dealer or SP staff.
Felling
Proportional clamping pressure of the feed rollers in relation to trunk diameter, individual settings for different species for optimum performance.
- Optimum trunk diameter*: 15 - 35 cm
- Max. rec. trunk diameter*: 43 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.
The delimbing knives are cast in high-strength steel and equipped with long cutting edges. This means that the limbs are cut off instead of being broken off. This minimizes friction during delimbing and allows the trunk to be fed through easily.
Proportional pressure ensures that the harvester head automatically works at the correct pressure in relation to tree diameter. This means that the friction between the trunk and harvester head is minimized and that the harvester head run at peak efficiency. Individual settings per tree species maximises production further.
LogHold is an evolution of proportional pressure and means that the delimbing knife pressure against the trunk can be reduced, without the risk of the trunk being dropped. If the trunk is about to fall, LogHold regulates the knife pressure so that the trunk is held in the right position. The amount by which the diameter may increase before LogHold takes action is set in the control system. No additional sensors are required.
This smart solution means that when the harvester head is fully open, i.e. at maximum tree size, the feed rollers are at their greatest angle and provide maximum carrying force against the trunk. As the feed rollers carry the trunk, the pressure on the delimbing knives can be reduced, which means less friction and the harvester head can feed the trunk through quickly and easily.