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Feller Bunchers
Typical Application Description
(relative to work application)
Low
Intermittent felling and stacking, good underfoot conditions and flat ground. Uniform trees
below 255 mm
(10 inches)
.
Medium Feller buncher applications in average underfoot conditions and rolling terrain. Some trees
up to 457 mm
(18 inches)
.
High
High cycle feller buncher applications in poor underfoot conditions, steep terrain, maneuver-
ing over stumps, rocks and fallen trees. Accumulation of multiple small diameter trees or
individual harvest of larger trees, including hardwoods, over 508 mm
(20 inches)
.
Load Factor Guide
(average engine load factor based on application description for each range)
Low
45%-65%
Medium 65%-85%
High
85%-98%
Harvesters
Typical Application Description
(relative to work application)
Low
Light duty harvesting and processing applications in good underfoot conditions and flat
ground. Primarily uniform softwood trees below 255 mm
(10 inches)
.
Medium Harvesting and processing applications in average underfoot conditions and rolling terrain.
Primarily softwood trees and a few hardwoods up to 457 mm
(18 inches)
.
High
High cycling harvesting and processing in poor underfoot conditions, steep terrain, maneu-
vering over stumps, rocks and fallen trees. Multiple small diameter trees or individual
harvest of larger trees, including hardwoods, over 508 mm
(20 inches)
.
Load Factor Guide
(average engine load factor based on application description for each range)
Low
38%-55%
Medium 55%-72%
High
72%-83%
Forwarders
Typical Application Description
(relative to work application)
Low
Loading and hauling application in good conditions. Flat ground, concentrated log bunches,
single tier log lengths, short haul distances.
Medium Loading and hauling application in medium conditions. Rolling terrain, medium spacing of
log bunches, single and two tier log lengths.
High
Loading and hauling application in poor conditions, steep or rocky terrain, scattered log
bunches, two tier log lengths, long haul distances.
Load Factor Guide
(average engine load factor based on application description for each range)
Low
15%-25%
Medium 25%-35%
High
35%-45%
25-26 Edition 47
Owning & Operating Costs
Hourly Fuel ConsumptionTables
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Forest Products
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