Hitachi Construction Machinery (Europe) NV (HCME) has
further expanded its range of large-capacity rigid dump trucks
with the introduction of the EH4000ACII. This technologically
advanced new model sets a high standard in the productivity and
comfort stakes, and is the perfect solution for heavy-duty mining
operations.
The specialist knowledge and extensive experience of Hitachi
engineering teams across several industry sectors have
contributed to the development of the EH4000ACII. For
example, it utilizes some of the pioneering technology in the
manufacturer’s high-speed bullet trains and automation systems
for large production plants, as well as some of the key
innovations from within the company
“After months of rigorous testing in the toughest mining
environments, the Hitachi EH4000ACII is ready to roll into the
European market,” explains Greg Smith,
HCME Manager Heavy and Mining Equipment
International Sales (Europe). “This groundbreaking
new model benefits from Hitachi technologies at large —
such as transportation, logistics, power and
industrial services — resulting in better performance, comfort and safety and reduced
running costs.”
 
BETTER PERFORMANCE
Like the current EH3500ACII model, the new EH4000ACII utilizes AC-drive
technology and load-responsive Insulated Gate Bipolar
Transistors (IGBTs), which have been developed by Hitachi. This
combination enables smooth operation and optimal speed
control, as well as increased productivity and reduced fuel
consumption during the haul cycle.
Equipped with a powerful Cummins QSKTA60-CE engine, the
electric-drive EH4000ACII delivers more efficient power transfer
to the road than mechanically driven trucks. This is due to the
elimination of heavy rotating parts such as the transmission and
torque converter. The truck also has more controlled braking
power compared with the previous model.
The EH4000ACII is also the perfect partner for Hitachi EXseries
large excavators. Its body is designed with a sloped floor
and tail chute for less spillage and the smoother shedding of
materials, and its large capacity results in shorter
loading cycles. For example, it is designed
around an even six pass loads from a Hitachi
EX3600-6 and five loads from a Hitachi EX5500-6.
 
OPERATOR COMFORT AND SAFETY
The EH4000ACII is designed with operator
comfort and safety in mind. The standard
ROPS/FOPS cab complies with ISO 3471 and 3449
requirements, and the newly designed air-ride
seat — combined with a three-point rubber ISO mount — helps
to reduce operator fatigue.
Four emergency engine stop switches are located at various
points outside the cab and a wide stairway is provided for quick
and easy access, inspection and maintenance. The truck is also
equipped with rear- and side-view cameras, as well as two frontview
mirrors, to enhance all-round visibility.
Like all Hitachi EX-6 series mining excavators, the
EH4000ACII's simple flat-panel dashboard has a large LCD
monitor that replaces all independently placed gauges and
lights. This enables quick and reliable troubleshooting to
reduce maintenance costs and minimize downtime.
Reduced running costs Use of AC-drive technology
results in lower life-cycle costs, and superior rim-pull and
retarding capabilities. More of the power supplied by the
diesel engine is transferred to the road, which also has a
positive impact on maintenance costs in terms of reduced
labour, parts and downtime. In addition, the brushless
motors of the AC-drive system provide lower maintenance
costs, while providing increased availability. The front
suspension cylinders are easily replaced without having to
remove the front wheels. The lubricating system and
battery/relay box mounted on the front bumper provide
easier maintenance and the fast-filling system is accessible
from ground-level for monitoring coolant, grease, hydraulic
oil and engine oil levels.