Kesla Oyj has revealed that it will launch a "totally new series" of large harvester heads at the upcoming Elmia Wood international forestry trade show in Sweden.
Finland-based forest and lifting equipment manufacturer Kesla Oyj has announced that will reveal a “totally new series of large harvester heads” at the upcoming Elmia Wood forestry trade show in Jönköping Sweden. Kesla’s harvester head range covers both roller and stroke harvester heads for professionals, from small thinning heads up to heavy-duty heads for clear cuttings and processing at landings.
According to the company, the new, modular series of the heads includes three different models, 27RH-II, 28RH-II and 30RH-II, and a wide range of options. These will replace the existing 28RH and 30RH models.
The 27RH-II is a light but powerful head for large wheeled harvesters and up to 20-tonne excavators. The head features 2WD feeding with the Kesla’s unique variable roller angle linkage. With three delimbing knives and short frame design, it offers “exceptionally” high power-to-weight-ratio and excellent features for processing crooked stems and eucalyptus according to Kesla.
The design of the 28RH-II is similar to the 27RH-II but equipped with four delimbing knives and the possibility for 2WD or 3WD synchro-feeding. The 30RH-II is heavier and more robust head for track-based harvesters and excavators up to 25 tonnes. It has, like the 28RH-II, four delimbing knives, and it can be equipped with whether 2WD or 3WD synchro-feeding.
The maximum saw diameter of the new heads is 780 mm with JPS R5500 saw unit, and max delimbing force is 36 kN. The new series includes lots of options to equip the head to different working conditions, from boreal coniferous softwoods to hardwoods or processing and debarking of Eucalyptus and Acacia.
Kesla says that the new heads have over 100 points of improvement over the old series. The performance of the new heads has been greatly improved by the new hydraulics; valves, hosing and feeding motors. Especially feeding and cutting power has increased remarkably. The length and diameter measuring systems have been redesigned for better measuring accuracy to meet the highest standards in the industry. For debarking applications, the heads can be equipped with optional length encoders in the feed motors and optical butt-end sensor.