Technical data, Engine, Hydraulic system – Liebherr R 9150 User Manual
Page 16: Electro-hydraulic controls, Electric system, Swing drive, Uppercarriage

16
R 9150
Technical Data
Engine
1 Liebherr diesel engine
Rating per ISO 9249
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565 kW/757 HP at 1,800 rpm
Model
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Liebherr D9512
(USA/EPA Tier 2 or fuel consumption
optimized setting)
Type
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V12 cylinder engine
Bore/Stroke
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128/157 mm / 5.04/6.18 in
Displacement
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24,24 l/1,479 in
3
Engine operation
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4-stroke diesel
common-rail direct injection
turbo-charged
Cooling
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water-cooled, hydrostatic fan drive
Air cleaner
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dry-type air cleaner, primary and safety
elements, automatic dust discharge
Fuel tank
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1.984 l/524 gal
Engine idling
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automatic idle control
Electrical system
Voltage
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24 V
Batteries
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4 x 75 Ah/12 V
Starter
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24 V/2 x 8.4 kW
Alternator
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24 V/140 A
RPM adjustment
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step by step via rpm selector
Hydraulic System
Hydraulic pump
for attachment and
travel drive
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3 Liebherr variable flow axial piston pumps
Max. flow
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3 x 512 l/min. / 3 x 135 gpm
Max. pressure
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350 bar/5,076 psi
Pump management
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electronically controlled pressure and flow
management with oil flow optimisation
Hydraulic pump
for swing drive
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1 Liebherr reversible swash plate pump,
closed-loop circuit
Max. flow
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635 l/min. / 168 gpm
Max. pressure
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380 bar/5,511 psi
Hydraulic tank
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1.200 l/317 gal
Hydraulic system
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1.600 l/423 gal
Hydraulic oil filter
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1 high pressure safety filter after each high
pressure pump + extra-fine filtration of
entire return flow with integrated by-pass
filtration (15/5 μm) + dedicated leak-oil
filtration
Hydraulic cooler
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1 separated cooler, temperature controlled
fan driven via 1 hydraulic piston motor
MODE selection
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adjustment of machine performance and
the hydraulics via a mode selector to match
application
ECO
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for economical operation (can be combined
with fuel optimized setting)
POWER
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for maximum digging power and heavy
duty jobs
Electro-Hydraulic Controls
Servo circuit
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independent, electric over hydraulic
proportional controls of each function
Emergency control
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via accumulator for all attachment
functions with stopped engine
Power distribution
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via monoblock control valves with inte-
grated primary relief valves and secondary
valves
Flow summation
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to attachment and travel drive
Closed-loop circuit
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for uppercarriage swing drive
Control functions
Attachment and
swing
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proportional via electronic joystick levers
Travel
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proportional via electronic pedals or
removable hand levers
Shovel flap functions
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proportional via electronic pedals
Electric System
Electric isolation
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easy accessible battery isolators
Working lights
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high brightness halogen lights:
– 2 on working attachment
– 1 on RHS of uppercarriage
– 1 on LHS of uppercarriage
Xenon or LED lights in option
Emergency stop switches
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in the cab and in engine compartment
Electrical wiring
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heavy duty execution in IP 65 standard for
operating conditions of – 50 °C to 100 °C/
– 58 °F to 212 °F
Swing Drive
Drive by
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2 Liebherr axial piston motors
Transmission
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2 Liebherr planetary reduction gears
Swing ring
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Liebherr, sealed single race ball bearing
swing ring, internal teeth
Swing speed
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0 – 6.5 rpm
Parking brake
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wet multi-disc brakes, spring applied,
hydrau lically released
Uppercarriage
Design
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torque resistant modular design upper
frame
Attachment mounting
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parallel length girders
Catwalks
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large catwalk on the left-hand side with
retractable ladder
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