Technical data, Engine, Hydraulic system – Liebherr R 9800 User Manual
Page 16: Electro-hydraulic controls, Electric system, Swing drive, Uppercarriage, Electric motor (optional)

16
R 9800
Technical Data
Engine
2 Cummins diesel engine
Rating per
SAE J 1995
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2 x 1.492 kW/2 x 2,000 HP at 1,800 rpm
Model
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Cummins QSK60
(USA/EPA Tier 2 or fuel consumption
optimized setting)
Type
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16 cylinder V-engine
Displacement
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60 l/3,661 in
3
Bore/Stroke
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159/190 mm / 6.26/7.48 in
or
2 MTU diesel engine
Rating per ISO 3046
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2 x 1.425 kW/2 x 1,910 HP at 1,800 rpm
Model
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12V4000 (USA/EPA Tier 2)
Type
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12 cylinder V-engine
Displacement
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57,2 l/3,490 in
3
Bore /Stroke
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170/210 mm / 6.69/8.26 in
Engine cooling system
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fans driven via hydraulic piston motors
Air cleaner
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dry-type air cleaner with pre-cleaner,
automatic dust ejector, primary and safety
elements
Fuel tank
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17.597 l/4,649 gal
Fuel filtration
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2 stage fuel filtration with water separator
and electric priming pump
Engine lubrication
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pre-lube starting system
ELIMINATOR™ engine oil automatic
filtration system (Cummins) + centrifugal
filtration
engine oil automatic filtration system (MTU)
+ centrifugal filtration
Electrical system
Voltage
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24 V
Batteries
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8 x 170 Ah/12 V (Cummins)/
12 x 170 Ah/12 V (MTU) starting battery
4 x 170 Ah/12 V service systems
Alternator
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2 x 24 V/260 Amp (brushless)
Engine idling
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electronically controlled
Electronic engine
power management
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engine power and speed sensing over the
entire engine rpm range
Hydraulic System
Attachment and travel drive
Hydraulic pumps
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10 variable flow axial piston pumps
Max. flow
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10 x 750 l/min. / 10 x 198 gpm
Max. hydr. pressure
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320 bar/4,641 psi
Swing drive
Hydraulic pumps
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4 reversible swash plate pumps,
closedloop circuit
Max. flow
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4 x 535 l/min. / 4 x 141 gpm
Max. hydr. pressure
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320 bar/4,641 psi
Pump management
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electronically controlled pressure and flow
management with oil flow optimisation
Hydraulic tank capacity
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5.800 l/1,532 gal
Hydraulic system
capacity
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10.000 l/2,642 gal
Hydraulic oil filter
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1 high pressure safety filter after each high
pressure pump + fine filtration of entire
return flow (15/5 μm)
Hydraulic oil cooler
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4 separate coolers, 4 temperature
controlled fans driven via hydraulic piston
motors
Main pump protection
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automatic protection against low oil level
Electro-Hydraulic Controls
Servo circuit
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independent, electronic over hydraulic
proportional controls of each function
Emergency control
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emergency lowering of the attachment to
the ground
Power distribution
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via monoblock control valves with inte-
grated primary relief valves and flanged on
secondary valves for travel and with inte-
grated proportional and safety valves
Flow summation
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to attachment and travel drive
Electro-hydraulic servo control
Attachment and
swing
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electronic optimized control via
proportional valves
Travel
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electronic optimized control via
proportional valves
Electronic damping
system
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Liebherr designed electronic control of
cylinder end-position
Electric System
Electric isolation
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easy accessible battery isolations
Working lights
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LED lights:
– 4 on working attachment
– 4 on RHS of uppercarriage
– 4 on LHS of uppercarriage
– 2 on counterweight
– 2 on cab
Emergency stop switches
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at ground level, in hydraulic compartment,
in engine and pumps compartment and in
operator cab
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
Hydraulic motor
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4 Liebherr axial piston motors
Swing gear
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4 Liebherr planetary reduction gears
Swing ring
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Liebherr, sealed triple roller swing ring,
internal teeth
Swing speed
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0 – 3.6 rpm
Swing-holding brake
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4 hydraulically released, maintenance-free,
external multi-disc brakes
Uppercarriage
Design
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torsion resistant designed upper frame in
box type structure for superior strength and
durability
Attachment mounting
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parallel longitudinal main girders in
box-section structure
Machine access
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45° access system with handrails on the
cab side of the uppercarriage. Full con-
trolled descent in case of emergency stop.
Additional emergency ladder fitted near the
cab
Electric Motor (optional)
2 electric motors
Power output
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2 x 1.700 kW/2,280 HP
Type
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3 phase AC squirrel cage motor
Voltage
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6,600 V, other voltage on request
Frequency
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50 Hz (or 60 Hz)
Revolutions
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1,500 rpm or 1,800 rpm
Motor cooling
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integrated air-to-air heat exchanger
Starting method
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inrush current limited to 2,2 full load current
Starting sequence
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successive startup of electric motors