PONSSE News 1/2011 ENG In English

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Hardware, sofTware and servicePonsse c6 sliding Boom craneThE NEW rEach Of ThE BEarOne of the last year's innovations introduced at the FinnMetko Trade Fair was a slidingboom crane designed for the Bear, Ponsse's biggest harvester. We were able to visit Swedento see one of the first machines ever sold, now being used in Skillingaryd in the province ofSmåland.A clatter and rumble is heard from adense forest in Småland. Contractor NiklasSavilahti is performing final felling withthe PONSSE Bear, which is equipped withthe new crane design. We are, in fact, followingthe footsteps of the bear.STEady WOrk machiNE"No defects have occurred. The controlsseem to be in place now," says Niklas, onhis break. This harvester model has beenon the market for many years, and it is thebiggest PONSSE harvester available. The24-tonne Bear is designed for final felling.It is equipped with a state-of-the-art C6sliding boom crane."I have always used a crane of this type.The best feature of this crane is that theload remains inside the bogie. This makesthe Bear extremely stable. I also like itsspeed and flexibility. Besides, the machineis easy to move about because the craneis so low.""The crane is not very high even in itsworking position, which is why it can beoperated under power lines. This wouldnot be possible with the parallel crane,which has a height of six to seven metres,"Niklas explains.a maN Of hiS WOrdThe C6 crane has a reach of up to ten metres.Compared to the C4 sliding boomcrane, which had the best performance untilrecently, all components of the C6 havebeen taken one step further. This providesadditional capacity for handling the H8harvester head, which weighs 1,350 kg. Inaddition to the harvester head's weight, theweight of the load to be lifted must also beconsidered – this can be up to three tonnes.Niklas's machine is equipped with theC6 crane, which was the second in Swedenand the third in the whole world. Sometime ago he was telling Ponsse, jokingly,that if they ever design a sliding boomcrane for the large H8 harvester head, hewill be the first to buy it."In March 2010, they phoned me fromthe factory and said that they are now de-12Ponsse News 1 • 2011
Hardware, sofTware and serviceall components of the bear are sturdier compared to the previous Ergo niklas had.charles werninger loading pine trunks with the Elephant, Ponsse’s largestforwarder, which accommodates a load of 18 tonnes.veloping one, so I should be a man of myword," he says, laughing. It is extremelynimble for such a big harvester. Many arewondering if buying such a large machinemakes sense. Although the sites are notalways dense forests, large trunks are alwaysfound. When handling them is easy,I believe that a slightly oversized machinewill give more lasting performance. Comparedto my old Ergo, everything aboutthis harvester is a bit more robust. Theframe, bogie housings and, for example,the crane extension, which has bearings atfour points instead of just two."a TOrNE VallEy BOyNiklas comes from Övertorneå in theTorne Valley. Fifteen years ago he moved1,200 kilometres south because of the forests."Here in the south the trees are sturdi-er and harvesting is more pleasant. Life iscompletely different in Norland, especiallybecause you have to travel away during theweeks. I think it's important to get homeevery night, especially if you have family."He has been working as a contractor for oversix years, since January 2005, when the Gudrunstorm hit Sweden.machiNE ruNNiNG iN TWO ShifTS"That was a good time to start, there was enoughwork to work 24-hours a day if you wanted to. Iwas driving alone at the time. Now my wife is doingthe accounting and I also have one other employee.The harvester is operated in two shifts.The objective is to have eight hours of operationin each shift. Economically, shift work is not thatprofitable, but it ensures efficient harvesting andbetter service for the sawmills," Niklas says.They are harvesting a total of 8,000–10,000cubic metres of wood every month for Ture JohanssonsTrävaru, their customer in Klevshult.PONSSE c6 TEchNical SPEcificaTiONS:Slewing torque (gross)Base tilt angleCrane turning angleLifting torque (gross)ReachLifting power with full reach"They give me work all year round. During quieterperiods, they have provided me with hardwoodharvesting. They are a good customer andalways pay me in time, for example. This is whyI want to consider their wishes and don't want toniggle over every detail."Niklas is happy to be a contractor in the forestsector, although he admits that "rainy Mondays"also exist. Jobs are performed within a radius of50 miles from Klevshult, and Niklas takes care ofmoving the machine himself using a trailer thatis registered as a tractor."These machines are too expensive for me toremove and fasten the chains and tracks for drivingon the road. These machines were not designedfor driving on public roads."55 kNm+/-20 degrees250 degrees310 kNm10 m1500 kp/10 mchristian, charles werninger andniklas savilahti say that from themachine cabin, the trunks seemsmaller than they actually are.Even the butt of the trunk,which is closest to thecamera, accounts forone cubic metre of woodand weighs a tonne.Ponsse News 1 • 2011 13
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PONSSE News 1/2011 ENG In English

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