Technical data, Engine, Hydraulic system – Liebherr R 960 SME User Manual

Page 4: Hydraulic controls, Swing drive, Operator’s cab, Undercarriage, Attachment

R 960 SME Litronic

Technical Data

Engine

Rating per ISO 9249

��

250 kW (340 HP) at 1,800 RPM

Model

��

Liebherr D 936 A7

Type

��

6 cylinder in-line

Bore/Stroke

��

122/150 mm

Displacement

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10.52 l

Engine operation

��

4-stroke diesel

Common-Rail, bi-turbo

exhaust-gas recirculation (eagr)

Exhaust gas treatment

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particle filter with active regeneration

emission standard stage IIIB / Tier 4i

Cooling

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water-cooled and integrated motor oil cooler,

after-cooled and fuel cooled

Air cleaner

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dry-type air cleaner with pre-cleaner, primary and

safety elements

Fuel tank

��

800 l

Electrical system

Voltage

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24 V

Batteries

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2 x 180 Ah/12 V

Starter

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24 V/7.8 kW

Alternator

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three phase current 28 V/100 A

Engine idling

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sensor-controlled

Motor management

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connection to the integrated excavator system

controlling via CAN-BUS to the economical utili-

sation of the service that is available

Hydraulic System

Hydraulic pump

for attachment and

travel drive

��

two Liebherr variable flow, swash plate pumps

Max. flow

��

2 x 350 l/min.

Max. pressure

��

350 bar

Pump regulation

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electro-hydraulic with electronic engine speed

sensing regulation, pressure compensation, flow

compensation, automatic oil flow optimizer

Hydraulic pump

for swing drive

��

reversible, variable flow, swash plate pump,

closed-loop circuit

Max. flow

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211 l/min.

Max. pressure

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355 bar

Hydraulic tank

��

380 l

Hydraulic system

��

670 l

Hydraulic oil filter

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2 full flow filters in return line with integrated fine

filter area (5 µm)

Hydraulic oil cooler

��

compact cooler for water cooler, after-cooler, fuel

cooler and transmission pump oil, sandwiched

with cooler for oil and condenser of air-condition-

ing with hydrostatically controlled fan drives

MODE selection

��

adjustment of engine and hydraulic performance

via a mode pre-selector to match application for

especially economical and environmentally

friendly operation or for maximum digging perfor-

mance and heavy-duty jobs

RPM adjustment

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stepless adjustment of engine output via RPM at

each selected mode

Tool Control

��

10 preadjustable pump flows and pressures for

add-on tools

Hydraulic Controls

The controlling is conducted via the integrated excavator system technology,

input and output modules, communicated via the CAN-BUS with the electronic

central unit.

Power distribution

��

via control valves in single block with integrated

safety valves

Flow summation

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to boom and stick

Closed-loop circuit

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for uppercarriage swing drive

Servo circuit

Attachment and swing

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proportional via joystick levers

Travel

��

– proportional via foot pedals or removable hand

levers

– speed pre-selection

Additional functions

��

via foot pedals or joystick toggle switch

Swing Drive

Drive by

��

Liebherr swash plate motor, shockless and anti-

reaction

Transmission

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Liebherr compact planetary reduction gear

Swing ring

��

Liebherr, sealed single race ball bearing swing

ring, internal teeth

Swing speed

��

0 – 6.1 RPM stepless

Swing torque

��

165 kNm

Holding brake

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wet multi-disc (spring applied, pressure released)

Option

��

pedal controlled positioning brake

Operator’s Cab

Cab

��

individual windscreens or featuring a slide-in sub-

part under the ceiling, work headlights integrated

in the ceiling, a door with a side window (can be

opened on both sides), large stowing and deposi-

ting possibilities, shock-absorbing suspension,

sounddamping insulating, tinted laminated safety

glass, separate window shades for the sunroof

window and windscreen, 12 V plug, storage bins,

lunchbox, cup holder

Operator’s seat

��

Liebherr-Comfort seat, airsprung with automatic

weight adjustment, vertical and horizontal seat

damping including consoles and joysticks. Seat

and armrests adjustable separately and in combi-

nation, seat heating as standard

Control system

��

arm consoles, swinging with the seat

Operation and displays

��

large high resolution colour display with self-

explanatory operation via touch screen, video,

versatile adjusting, control and monitoring facili-

ties, e.g. climate control, implement and tool

parameters

Air-conditioning

��

standard automatic air-conditioning, ambient air

function, fast de-icing and demisting at the press

of a button, air vents can be operated via a menu;

ambient air and fresh air filters can be easily

replaced and are accessible from the outside;

heating-cooling unit, designed for extreme out-

side temperatures, sensors for solar radiation,

inside and outside temperatures

Noise emission

ISO 6396

��

(inside cab)

= 72 dB(A)

2000/14/EC

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(surround noise) = 106 dB(A)

Undercarriage

S-HD

��

gauge 3,100 mm

Drive

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Liebherr swash plate motors with integrated

brake valves on both sides

Transmission

��

Liebherr planetary reduction gears

Travel speed

��

low range – 3.0 km/h

high range – 3.6 km/h

Net drawbar pull on crawler

��

478 kN

Track components

��

D 8 K, maintenance-free

Track rollers/Carrier rollers

��

9/2

Tracks

��

sealed and greased

Track pads

��

double grouser

Digging locks

��

wet multi-discs (spring applied, pressure

released)

Brake valves

��

integrated into travel motor

Lashing eyes

��

integrated

Attachment

Type

��

combination of resistant steel plates and cast

steel components

Hydraulic cylinders

��

Liebherr cylinders with special seal-system,

shock protection

Pivots

��

sealed, low maintenance

Lubrication

��

automatic central lubrication system (except link

and tilt geometry)

Hydraulic connections

��

pipes and hoses equipped with SAE split-flange

connections

Bucket

��

standard equipped with Liebherr tooth system