SP Maskiner AB

Model SP 761 LF - Heavy Duty and High Performance Harvester Head

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The SP 761 LF is a compact, heavy duty and high performance harvester head. It is designed according to SP´s Low Friction principle for minimum friction and maximum productivity. The SP 761 LF is suited for working on both large wheel based harvesters as well as tracked harvesters and excavator carriers.

The high capacity in combination with the compact, protected and heavy duty design makes the SP 761 LF able to handle a variety of different demanding harvesting applications with great performance. Regardless if the task at hand is in large diameter soft wood, crooked and limby hardwood or dense mixed wood stands you can count on the SP 761 LF to get the job done. Equipped with the specially designed processing knives and a topping saw the SP 761 LF becomes a dedicated processing head with great performance processing decked wood out of a pile. The SP 761 LF truly is a compact and heavy duty all-rounder. The SP 761 LF reaches top performance in stands with a diameter of 25 to 50 cm (10 - 20”)

The SP 761 LF reaches top performance in stands with a diameter of 25 to 50 cm (10 - 20”) bhd, but is thanks to the LF principle also capable of efficiently working larger tree sizes.

Hydraulics

  • Min. pump capacity: 250 l/min    
  • Rec. working pressure: 30 MPa    
  • Feeding
  • Proportional clamping pressure of the feed rollers in relation to trunk diameter, individual settings for different species for optimum performance.
  • Roller motors: 934, 1043, 1248 cc    
  • Max. opening: 700 mm    
  • Feed speed: 0-6 m/s    
  • Feeding force: 46 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: 750 mm 
  • Chain speed: 40 m/s    
  • Saw motor: 32 cc    
  • Saw unit: SuperCut 100    
  • QuickCut: Yes    
  • Tow sawing (option)
  • Cutting diameter: 380 mm    
  • Chain speed: 40 m/s    
  • Saw motor: 20 cc    
  • Saw unit: JPS    

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: 3    
  • Fixed knives: 2    
  • Delimbing diameter tip to tip: 510 mm    
  • Delimbing diameter incl. lower knife: 550 mm    
  • Min. delimbing diameter: 40 mm    
  • Proportional pressure: Yes    
  • LogHold: Yes    

Weight and dimensions
Despite its enormous capacity, the SP 761 LF is suitable for more than just large-diameter felling thanks to its compact design.

  • Width closed: 1400 mm    
  • Width open: 1920 mm    
  • Height: 1850 mm    
  • Weight: 1680 kg    
  • Height with top saw (option): 2030 mm    
  • Weight with top saw (option): 1850 kg    

Recommendations
Carriers
The SP 761 LF can be fitted to both conventional forest machines and excavators. 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*: 25 - 50 cm
  • Max. rec. trunk diameter*: 55 cm

* Diameter at breast height, measured 1.3 m up the trunk.

The SP 861 LF has a very high level of standard equipment. However a number of different options are available for being able to optimize the harvester head for different needs, carriers and conditions. The below list contains the most common options. For more information please contact your nearest SP dealer.

Colour marking SUPERMARK

This equipment is used for making the forwarding easier when the qualities/lengths are very similar to each other and difficult to spot with pure eye sight. As the saw bar cuts through the stem SUPERMARK sprays a colour on the cutting area, marking it with a specific colour corresponding to the particular length/quality. By combining the two colours it is possible to mark up to 3 different qualities.

Top saw

The top saw is a very useful option in many applications, for example in heavy limbed hardwood, storm timber with broken tops or when topping trees in a full tree length operation.

Processing knives

The processing knives have an extended and rounded tip in order to simplify the grabbing of trees out of a pile when working as a processor.

Hydraulic motors

In order to optimize the SP 861 LF for different carriers and conditions there are 3 different motor sizes to choose from. Do you need maximum speed, torque or a good mix? 934 - 1034 - 1248 cc

Feed rollers

Different feed rollers for different species and conditions.

Find end sensor

Makes operations in pre felled woods easier and more productive. With the find end sensor the harvester head reverses down to the root end of the stem, stops and sets the length to zero, all with the press of one button.

Complete measuring systems

The SP 861 LF can be supplied with one of the following measuring systems:

  • Dasa4 dxPC - Dasa4Compact - Dasa5
  • Motomit IT - Motomit PC
Preparation for measuring systems

The SP 861 LF can be supplied prepared for machines equipped with any of the following measuring systems:

  • Dasa280 - Dasa380 - Dasa4 dxPC - Dasa4Compact - Dasa5
  • Motomit IT - Motomit PC
  • Valmet MAXI
  • JohnDeere Timbermatic 300/3000
  • Technomatic
  • Aptor20
Other options

Rotators - Swing dampers - Joysticks Parts kits - Rotator valve

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