LOADING TOOLS
productivity, efficiency and reliability. This
followed the R 9150B general launch in January
2019. With an operating weight range of 128-148 t,
depending on the type of wear packages and
attachment the customer requires, the new
Liebherr R 9150B is a good match for 50 t up to
100 t dump trucks.
Abie Kriel, Technical Manager Mining at
Liebherr Africa, said the launch of the new B
model is in line with the company’s strategy for
the 100-150 t class excavators, which has been
identified as one of the major growth drivers for
Liebherr’s Mining Division.
Tom Munch, Director of Mining at Liebherr
Africa, said the contract mining market is a major
driver of the 100 t class. “We are working in a
contract mining market. If you look at the type of
equipment this group of customers requires
currently, it’s mainly 100 t class excavators and
100 t dump trucks. This is due to the mobility they
require, given that their contracts are limited to 3-
5 years at most,” says Munch.
The R 9150B’s productivity hinges on the
machine’s fast cycle times, precise machine motions,
high digging forces, power-oriented energy
management and an exclusive EVO bucket solution.
With fast cycle times in mind, like all other
Liebherr mining excavators, the R 9150B uses a
closed-loop swing circuit. The main hydraulic
circuit comprises a combination of three main
valves fed by three working pumps, providing
flexibility of attachment control and force
distribution, while allowing full oil flow integration
for fast movement and fast cycle times.
“All Liebherr Mining excavators are equipped
with a closed loop swing circuit. Kinematic energy
is recovered when the swing motion is used
during deceleration, to drive the main and
auxiliary pumps, reducing fuel consumption and
allowing faster boom lift motion,” explains Kriel.
The R 9150B integrates the Litronic Plus
electronic control system, allowing for easy
control even when simultaneous movements are
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The Liebherr R 9150B integrates the Litronic
Plus electronic control system, allowing for easy
control even when simultaneous movements are
required
required. The patented Liebherr electronic bucket
cylinder damping system provides controlled end-
cushioning for smooth attachment motions, thus
increasing machine productivity. The integration of
the electronic control system also enables
maximum machine versatility and the use of
various long reach attachments and specific
tools.