2018 International Forest Industries IFI Feb March 2018 Digital | Page 63

The Cat 548 LL has a
rear-entry cab option
The 568 LL, the most powerful
in the series, is equipped with a
319 hp (238 kW) Cat C9.3 ACERT
engine. All models are available in
two live heel configurations and a
processor configuration.
The Cat 538 LL, 548 LL, and
558 LL feature a new machine
design, new engine, and optimized
components and work tools to
provide exceptional fuel savings
and excellent productivity.
Cat Forest Machine log
loaders boast “rock-solid”
stability, and the 538 LL features
a wider track gauge than the
previous model and heavy-duty
counterweight to maximize
stability and operator experience
in diverse logging conditions,
according to the manufacturer.
Application versatility is enhanced
with a purpose-built boom and
stick arrangements and new
grouser options. The machines
are engineered for durability
and reliability with proven Cat
components, purpose-built upper
and lower frames, and increased
cooling capability to maximize
machine uptime.
The Cat 538 LL, 548 LL, and
558 LL feature uniform speed
control to maintain a constant
engine speed regardless of load.
The result is unprecedented fuel
economy. Additional features also
boost fuel economy. For example,
with automatic engine speed
control, the machines will revert
automatically to a lower idle speed
when there is a lull in operation.
Also, the operator can choose from
three power modes, depending on
the work tasks or application.
The hydraulic system delivers
a higher level of efficiency and
power. “Pumps are upsized to
maximize hydraulic flow,” said
Dunn. “So, while the engine can
run at a lower rpm, consuming less
fuel, the Cat 538 LL, 548 LL, and
558 LL have the needed power for
maximum performance.”
The main pumps, control valves,
and hydraulic oil tank are located
close together so the tubes and
lines between components are
shorter, reducing friction and
pressure drops.
The hydraulic system features
translate to an impressive boost
in performance: maximum
horsepower, greater swing
torque, and added lift capacity.
The increases mean improved
implement performance, lifting
bigger payloads with better control
– and more production.
The engines feature an
improved side-by-side cooling
system with increased cooling
capacity for all models. Increased
fin spacing for the radiator
package improves airflow and
cooling capability. A standard
auto-reversing fan with optimized
fan blade pitch increases service
intervals and maintains proper
engine operating temperature.
Machine width and track
length are designed for maximum
machine stability for increased lift
and swing capabilities, and the
International Forest Industries | FEBRUARY / MARCH 2018 61