The ER Boom System
The patented ER boom system allows the machine operator to extend and
retract the feller buncher boom on a horizontal plane smoothly and quickly
using a single joystick.
The stick boom or "reach" joystick controls both the main
and stick booms simultaneously, resulting in the attachment moving either
away from or toward the operator.
The ER boom system is bringing revolutionary improvements to tree
harvesting not seen since the invention of the high-speed disc saw 20
years ago.
Important advantages of the ER boom system include improved fuel
efficiency, increased production and reduced operator fatigue. Also,
training for new operators is a far less daunting task.
Conventional boom systems are fundamentally inefficient at felling
because they must mix two arcing motion functions to get the desired
reaching motion.
Conversely, the patented ER boom system allows the machine
operator to extend and retract the boom on a horizontal plane smoothly and
quickly using a single joystick. The stick boom or "reach"
joystick controls both the main and stick booms simultaneously, resulting
in the attachment moving either away from or toward the operator. The main
boom and tilt functions operate in the traditional manner to adjust the
height and angle of the attachment.
Key to this technology is reduced energy consumption. The ER system
transfers energy back and forth between the main and the stick boom
functions, reducing the total energy needed to move the boom system. This
translates to reduced demands for power, pump flow and system cooling.
Operators who have spent time on ER machines comment on the speed,
ease of operation and smoothness of the boom as well as the extra
horsepower available for other functions and faster saw recovery.
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