The John Deere 859 MH
simultaneous movements of boom extensions , head operation , and machine movements .
“ I think that , all in all , John Deere has been really successful in developing control systems ,” continues Tommy Grytegård of Sweden . “ It is unbelievable when you consider how many calculations are constantly being made by the harvester during use .
“ It is really impressive how well all the functions of the new 1470G work together . It really is a topclass machine .”
M-Series harvesters Like the wheeled harvesters , the John Deere M-Series tracked harvesters have been positively received , with customers citing the outstanding productivity , reliability , and durability . Most notably , the larger operator station on all M-series machines features ergonomically designed controls , and large window areas , increasing productivity through improved operator comfort and visibility .
“ I like the power ,” says Mike Ratkowski , a US-based customer from Wisconsin . “ The count on the boom power is really nice .
“ It swings those big trees a lot easier than a smaller machine would . Increased visibility , increased power , serviceability , uptime – everything is good .”
According to the manufacturer , superior tractive effort and improved stability due to a long and wide undercarriage have delivered tremendous productivity gains for customers – particularly in difficult terrains .
Additionally , the Rapid Cycle System ( RCS ) automation feature , which combines automated fellinghead arm cycling with simple boom control , increases cycle times up to 35 %.
With its Special Application Solutions team , Volvo Construction Equipment has been continually refining and upgrading its line of tracked forestry carriers developed around its standard excavator models .
These latest , E-Series models – EC220E , EC250E , EC300E and the mostly recently introduced EC380E Forestry Carriers – are designed as versatile , all-purpose machines and can tackle a variety of forest applications , from forest road
building , regeneration harvesting and stump harvesting for bioenergy to transplanting , according to the manufacturer .
Respective machine operating weights are 26,835 kg ( 59,161 lb ), 32,020 kg ( 70,592 lb ), 34,600 kg ( 76,280 lb ) and 46,800 kg ( 103,175 lb ), excluding the attachment .
Designed for tough work , these machines are equipped with heavyduty protection for both the upper and lower structures , a purposebuilt , ‘ high-walker ’ undercarriage with full length track guards , idler reinforcement , heavy duty track motor covers and a heavy-duty forestry boom and arm with upgraded guarding for the hydraulic cylinder , piping and work lights .
The EC250E is also available in log loader version , featuring a dedicated , straight log loader boom and log loader arm , while other models can be equipped with a heavy duty boom and arm , highlift boom riser – an additional lift height of 1,635 mm – and rotating grapple .
The Volvo forestry carriers feature fuel-efficient Volvo Tier 4 Final / Stage lV diesel engines , superior hydraulic power , increased swing torque and dedicated piping for processor applications .
“ Volvo is best-in-class when it comes to fuel consumption , thanks to the efficiency of both the engine and hydraulic system ,” the company stated . Stage lllA , D-Series models are also available for less regulated markets .
Volvo is best-in-class when it comes to fuel consumption , thanks to the efficiency of both the engine and hydraulic system
Volvo
40 International Forest Industries | FEBRUARY 2017 / MARCH 2017