The SP 761 LF is a strong, fast and reliable higher-performance harvester head designed for the heaviest jobs. The harvester head can be installed on both large, wheel-based harvesters as well as on excavators in the 20-25 tonne range.
The SP 661 LF is a compact and strong high performance harvester head. The SP 661 LF is designed to be able to offer highest productivity in both small and large diameter harvesting.
The SP 591 LX G3 is purpose-built for harvesting and debarking the most awkward, plantation-grown eucalyptus and acacia species. It is an extremely strong, robust harvester head.
The SP 561 LF is a versatile, all-round harvester head. The SP 561 LF is designed for varying work duties, offering very good characteristics all the way from first thinning to medium final felling.
The SP 461 LF is a high-performance thinning head. It is an excellent choice for installation on both midsize thinning carriers with a long crane as well as smaller in-stand thinning carriers.
Jas P Wilson have been involved in the supply of SP harvesting heads since 2009. We were first introduced to them after Rottne started to fit SP heads to their machines as part of their range with very impressive results. The SP head is a high quality product with some very clever unique equipment built in.
LF stands for the low friction that appears between the trunk and the harvester heads in the LF series. LF minimizes the friction between the trunk and the harvester head during the feeding and by doing so it maximizes the performance and production of the harvester head. The low friction also minimizes fibre damage, harvester head wear as well as fuel consumption on the carrier.
Besides the low friction LF series harvester heads are also known for their high capacity / weight ratio as well as their compact and nimble design – making them very easy to manoeuvre in dense stands. LF consists of four smart systems and solutions all contributing to a minimized friction and maximized production.
This SP patent makes sure that the feed rollers provide maximum angle and carrying force when the harvester head is fully opened, i.e. when working with maximum tree sizes. Thanks to the fact that the feed rollers provides more carrying force the larger the trunk the harvester head can be run with a very low knife pressure resulting in a faster and more productive harvester head.
LogHold, an SP patent, ensures that the proportional pressure of the delimbing knives can be reduced to an absolute minimum without risk of dropping the tree. If LogHold detects that the trunk is about to fall out of the harvester head it reacts lightning fast by regulating the pressures of the harvester head to such a level that the tree is back to the optimum position again. LogHold is easily set up in the computer system and can be optimized for different species and conditions for minimum fibre damage and maximum productivity.
LogHold is integrated in the SP harvester head software and does not need any additional sensors or encoders.