The range includes the 20SH-II and 25SH-II for excavators from 7 to 15 tons.
The stroke technology allows even a small base machine with hydraulic power to produce a large delimbing force. The heads are best suited for excavator applications and processing of difficult branched trees or gentle handling of valuable trees. Kesla’s stroke harvester heads have gone through more than 50 changes, ranging from improvements to new features. The design focus has been on improvements in performance, reliability, durability and economy.
Performance of the new heads has been achieved through better oil flow, a new proportional feeding valve and the use of the Kesla proLOG harvester control system. This control system was launched during 2015. The new design of the delimbing knives has improved delimbing quality and performance. A new saw motor with an anti-cavitation valve and over-speed limiter ensures the optimal running of the motor. New proportional feed control enables smoother operation and ensures longer lifetime. The harvester heads can be fitted with a range of options such as a topping saw, tilt floating valve, automatic chain tensioner and proLUBE chain oiler. Source: http://www.kesla.fi/news/article/article/news/kwf-press-release-the-new-generation-of-kesla-stroke-harvesters/