Simplicity, strength and durability hallmarks of Ponsse harvester heads
Ponsse has a long history of making harvester heads. The very first were manufactured in the 1980s and, ever since, each harvester head model has been designed with a focus on efficiency, durability and ease of maintenance. Each model is characterized by its simple and strong structure. Ponsse harvester heads are built to meet the demands of the roughest conditions and thanks to the wide range, the manufacturer can offer solutions for wheeled harvesters and track-based machines.
The Ponsse harvester head range offers 11 modern harvester head models, which are suitable for various uses from thinning to final felling and processing. Their high feed power and fast economical sawing result in extreme efficiency. As each harvester head can be adjusted according to tree and base machine properties, working is easy and the harvester head has a long service life. Moreover,
Ponsse´s in-house developed and manufactured Opti information system guarantees measurement accuracy in cutting. “All our harvester heads of different sizes are also suitable for the multi-stemming of energy wood and pulpwood without any optional equipment,” says Janne Loponen, Product Manager for Ponsse Harvester Heads. “This eliminates additional costs, servicing and weight. The frames of our harvester heads are machined after the welding assembly. This guarantees the highest quality with excellent precision.” Durable hoses, well-designed hose routing and strong delimbing knives are important features of Ponsse harvester heads. In addition, the automatic Ponsse CT+ chain tensioner and the grease lubrication system for the saw chain are available for all harvester head models except H10 where saw unit is Hultdins 300.
“For H7 and H8 models a stronger HD version is available for track-based harvester installations and can also be used in larger wheel based harvesters. The H8, H8HD and H10 models can be equipped with a top saw and find end sensor for even more efficient logging.”
Loponen is very proud of the latest model in the Ponsse harvester head family, the H8 HD, which is a heavy duty harvester head for felling and processing of hardwood and softwood in tough conditions. Thanks to the modern and optimized design of H8 HD, the weight of the harvester head is low, making it possible to use it on the Ponsse Bear, wheel-based harvester and most track-based machines. Low weight also enables lower fuel consumption and
easier handling, especially in processing operations. “Strong grip, powerful feeding and fast sawing are packed in a robust and reliable package that can be fitted into various tracked carriers,” Loponen said. The H8 HD has a wide feed roller geometry that supports even the largest stems with feed rollers instead of delimbing knives.
Improved fuel economy
This allows a lower pressure to be applied by the knives, improving fuel economy and feeding speed as well as measuring accuracy. The H8 HD is available with a top saw for processing curvy trees with big branches. Processor delimbing knives are longer than standard knives for picking logs more easily from a pile, Loponen added. The other newcomer, the H10 processing head, offers unbeatable Ponsse quality and productivity to a new size class. The H10 is designed and built for heavy-duty processing work in the hardest conditions. Robust structure, strong grip and powerful feeding guarantee high efficiency and reliability through the years. Meanwhile, the Ponsse Opti is an entire product family of forest machine information systems. It covers harvesters, forwarders and loose harvester heads installations and can consist of CTL measuring, weight scaling, reporting and many other features. Applications for wood procurement management are also available. The basic principle behind the Opti information system is user friendliness.
“We are aware of importance of the operator skills; therefore, we have created the system where the operator doesn’t need to adapt to the control system – the control system is adapted for the operator,” Loponen said. “Forest machines must be effective, reliable, and capable of measuring wood accurately, and they must also be easy to use and environmentally friendly. The fulfilment of these requirements can be greatly enhanced with the help of information technology. The cutting suggestion made by the measurement device ensures the optimal usage of the raw material, leaving the machine operator free to concentrate on the quality of the tree.” To help the operator to focus on what is essential and improve working methods,
Ponsse has also developed EcoDrive software, which indicates in real-time whether the machine is being controlled economically and efficiently. Hanna Vilkman, Product Manager for Information Systems: “Efficient and economic wood procurement is in the best interests of all parties in the procurement chain, that is, the forest owner, the contractor, the forest company, and the nature of the forest.” Ponsse forest machines, harvester heads and information systems are widely available from Ponsse dealers and service centers around the world. Ponsse is a pioneering developer of mechanical timber-harvesting based on the cut-to-length method. “We only manufacture forestry machines so our focus is clear, at Ponsse we put customers always first and we aim to be the preferred partner in our industry.
All our harvester heads of different sizes are also suitable for the multistemming of energy wood and pulpwood without any optional equipment.