Technical data, Engine, Hydraulic system – Liebherr R 9350 User Manual

Page 16: Electro-hydraulic controls, Electric system, Electric motor (optional), Swing drive, Uppercarriage

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16

R 9350

Technical Data

Engine

1 Cummins diesel engine

Rating per

SAE J 1995

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1.120 kW/1,500 HP at 1,800 rpm

Model

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Cummins QSK45

(USA/EPA Tier 1)

Type

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12 cylinder turbocharged V-engine

after-cooler

two separate water cooling circuits

direct injection system

Displacement

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45 l/2,745 in

3

Bore/Stroke

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159/190 mm / 6.26/7.48 in

or

1 Cummins diesel engine

Rating per

SAE J 1995

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1.120 kW/1,500 HP at 1,800 rpm

Model

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Cummins QSK50

(USA/EPA Tier 2 or fuel consumption

optimized setting)

Type

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16 cylinder turbocharged V-engine

after-cooler

two separate water cooling circuits

common rail

Displacement

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50,3 l/3,069 in

3

Bore/Stroke

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159/159 mm / 6.26/6.26 in

Engine cooling system

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fans driven via hydraulic piston motor

Air cleaner

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dry-type air cleaner with pre-cleaner,

with automatic dust ejector, primary

and safety elements

Fuel tank (Tier 1)

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5.815 l/1,536 gal

Fuel tank (Tier 2)

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6.908 l/1,825 gal

Electrical system

Voltage

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24 V

Batteries

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4 (+ 2) x 170 Ah/12 V

Alternator

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24 V/260 Amp

Engine idling

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automatic engine idling

Electronic engine

control system

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engine speed sensing over the entire

engine RPM range. Provides integration

of engine with other machine systems

Hydraulic System

Hydraulic pumps

for attachment and

travel drive

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4 variable flow axial piston pumps

Max. flow

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4 x 754 l/min. / 4 x 199 gpm

Max. hydr. pressure

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320 bar/4,640 psi

Hydraulic pump

for swing drive

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2 reversible swash plate pumps,

closed-loop circuit

Max. flow

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2 x 390 l/min. / 2 x 103 gpm

Max. hydr. 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 tank capacity

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2.200 l/581 gal

Hydraulic system

capacity

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4.200 l/1,110 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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2 separate coolers, 2 temperature con-

trolled fans driven via hydraulic piston

motor

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 flanged

on secondary valves

Flow summation

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to attachment and travel drive

Control functions

Attachment and

swing

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proportional via joystick levers

Travel

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proportional via foot pedals or hand levers

Bottom dump bucket

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proportional via foot pedals

Electric System

Electric isolation

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easy accessible battery isolations

Working lights

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high brightness halogen lights:

– 2 on working attachment

– 1 on RHS of uppercarriage

– 3 on LHS of uppercarriage

– 2 on counterweight

Xenon or LED lights in option

Emergency stop switches

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at ground level, in hydraulic compartment,

in engine 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

Electric Motor (optional)

1 electric motor

Power output

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1.200 kW/1,610 HP

Type

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3 phase AC squirrel cage motor

Voltage

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6,000 V or 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

Swing Drive

Hydraulic motor

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2 Liebherr axial piston motors

Swing gear

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2 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 – 3.9 rpm

Swing-holding brake

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hydraulically released, maintenance-free,

multi-disc brakes integrated in each swing

gear

Uppercarriage

Design

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torque resistant designed upper frame in

box type construction for superior strength

and durability

Attachment mounting

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parallel longitudinal main girders in box-

section construction

Machine access

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(Tier 1) hydraulically driven access ladder

on the cab side of the uppercarriage,

(Tier 2) 45° access system with handrails

on the cab side of the uppercarriage, full

controlled descent in case of emergency

stop

additional emergency ladder fitted near the

cab

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