Liebherr R974C User Manual

Machine for Industrial Applications

Operating Weight: 110,300 – 120,600 kg Engine Output: 400 kW / 543 HP

R 974 C

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Technical Data

Engine

Rating per ISO 9249

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Model

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Type Bore/Stroke Displacement Engine operation

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Cooling Air cleaner

Fuel tank Electrical system Voltage Batteries Starter Alternator

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Hydraulic System

Hydraulic pumps for attachment and travel drive Max. flow Max. hydr. pressure Pump control

Hydraulic pump for swing drive

Max. flow Max. hydr. pressure Hydraulic tank Hydraulic system Hydraulic oil filter

Cooler

MODE selection

ECO

POWER LIFT FINE

RPM adjustment

Menu for auxiliary functions

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400 kW (543 HP) at 1,800 RPM Liebherr D 9508 8 cylinder V-engine 128/157 mm

16.16 l 4-stroke diesel

Common-rail-injection turbo-charged after-cooled

reduced emissions water-cooled dry-type air cleaner with pre-cleaner, primary and

safety elements, automatic dust discharge 1,460 l

24 V 2 x 170 Ah/12 V 24 V/7.8 kW three phase current 28 V/80 A

2 Liebherr variable flow swash plate pumps 2 x 496 l/min. 350 bar electro-hydraulic with electronic engine speed

sensing regulation over entire RPM range,

pressure compensation, flow compensation

automatic oil flow optimizer, flow summation

1 reversible swash plate pump, closed-loop

circuit 315 l/min. 350 bar 745 l 1,350 l 2 full flow filters in return line with integrated fine

filter area (5 µm), 1 high pressure filter for each

main pump radiator, consisting of cooling unit for coolant and

after-cooler as well as 2nd cooler for hydraulic oil

with hydrostatically regulated fan drive adjustment of machine performance and the

hydraulics via a mode selector to match applica-

tion for especially economical and environmentally

friendly operation for maximum digging power and heavy duty jobs for lifting for precision work and lifting through very sensi-

tive movements stepless adjustment of engine output via the rpm

at each selected mode

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4 fixed adjustable oil flow parameters for optional

working tools

Swing Drive

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Drive by

Transmission Swing ring

Swing speed Swing torque Holding brake Option

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Uppercarriage

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Design Attachment mounting

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Catwalks

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Operator’s Cab

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Cab

Operator’s seat

Joysticks Monitoring

Heating system

Noise emission ISO 6396 2000/14/EC

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Undercarriage

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Drive

Transmission Travel speed

Drawbar pull max. Track components Track rollers/Carrier rollers Track pads Digging locks

Brake valves

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Liebherr swash plate motor with integrated brake

valves Liebherr compact planetary reduction gear Liebherr, sealed single race ball bearing swing

ring, internal teeth 0 – 5.9 RPM stepless 295 kNm wet multi-disc (spring applied, pressure released) pedal controlled positioning brake

torque resistant modular design upper frame parallel length girders on both sides

profiles and deep drawn technology, resiliently

mounted, sound insulated, tinted windows. Front

window armored glass, door with sliding window shock absorbing suspension, adjustable to

operator’s weight, 6-way adjustable seat integrated into adjustable seat consoles menu driven query of current operating condi-

tions via the LCD display. Automatic monitoring,

display, warning (acoustical and optical signal)

and saving machine malfunction data, for exam-

ple, engine overheating, low engine oil pressure

or low hydraulic oil level standard automatic air conditioning, combined

cooler/heater, additional dust filter in fresh air/

recirculated

LpA (inside cab) = 72 dB(A) LWA (surround noise) = 109 dB(A)

heavy version, long undercarriage, extra wide Liebherr swash plate motors with integrated

brake valves on both sides Liebherr planetary reduction gears low range – 2.1 km/h

high range – 3.6 km/h 867 kN D 9 G, maintenance-free

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11/2 double-grouser beveled or flat pads wet multi-discs (spring applied, pressure

released) integrated into travel motor

Hydraulic Controls

Power distribution

Flow summation Closed-loop circuit Activation Attachment and swing Travel

Additional functions

2 R 974 C Litronic Machine for Industrial Applications

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via control valves in single block with integrated

safety valves to boom stick and bucket cylinders for uppercarriage swing drive electro-hydraulic control proportional via joystick levers proportional via foot pedals or removable hand

levers via foot pedals or joystick toggle switch

Attachment

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Type

Hydraulic cylinders

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Pivots Pivots bucket-to-stick bucket-to-link Lubrication Hydraulic connections

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box-type, combination of resistant steel plates

and cast steel components

Liebherr cylinders with special seal-system,

shock absorbed

sealed, low maintenance

O-ring sealed and completely enclosed automatic central lubrication system

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pipes and hoses equipped with SAE split-flange

connections

Dimensions

mm A 3,605 A1 4,365 A2 5,000 C 3,995 D 4,500 E 4,540 H 3,710 K 1,790 L 6,320 P 1,680 Q 780 S 5,000 U 7,720 N 600 750 1,000 B 6,000 6,000 6,000 G 6,290 6,290 6,290 Z 8,370

Industrial-Type Straight Boom 10.00 m and Industrial Stick 7.50 m mm

V 9,050 W 4,750 X 15,250

Industrial-Type Straight Boom 12.00 m and Industrial Stick 9.00 m mm

V 10,000 W 6,250 X 17,100

Industrial-Type Gooseneck Boom 12.00 m and Industrial Stick 9.00 m mm

V 9,250 W 4,750 X 17,250

Industrial-Type Straight Boom 14.00 m and Industrial Stick 10.50 m mm

V 10,900 W 7,700 X 18,850

Industrial-Type Gooseneck Boom 14.00 m and Industrial Stick 10.50 m mm

V 10,000 W 5,450 X 19,200

R 974 C Litronic Machine for Industrial Applications 3

Industrial Attachment

with Industrial-Type Straight Boom 10.00 m

Attachment Envelope

-10

-20

-30

-2

-4

-6

-8

-10

02468101214161820

1 with industrial stick 7.50 m 2 with industrial stick 7.50 m and grapple model 75 B

Operating Weight and Ground Pressure

The operating weight includes basic machine with counterweight

18.0 t, industrial-type straight boom 10.00 m, industrial stick 7.50 m and grapple model 75 B with 5 open tines 3.00 m

Undercarriage EW

Pad width mm 600 750 1,000* Weight kg 110,300 111,800 117,200 Ground pressure kg/cm

* flat pads

1.45 1.18 0.93

0102030405060

4 R 974 C Litronic Machine for Industrial Applications

Lift Capacities

with Industrial-Type Straight Boom 10.00 m

Industrial Stick 7.50 m

4.5 m 6.0 m 7.5 m 9.0 m 10.5 m 12.0 m 13.5 m 15.0 m 16.5 m 18.0 m 19.5 m 21.0 m 22.5 m 24.0 m Under m carriage m

24.0 EW

22.5 EW

21.0 EW

19.5 EW

18.0 EW

16.5 EW

15.0 EW

13.5 EW

12.0 EW

10.5 EW

9.0 EW

7.5 EW

6.0 EW

4.5 EW

3.0 EW

1.5 EW 0 EW – 1.5 EW – 3.0 EW – 4.5 EW – 6.0 EW – 7.5 EW – 9.0 EW – 10.5 EW

17.9* 17.9* 16.0* 16.0* 9.42

18.0* 18.0* 13.8* 13.8* 11.52

18.2* 18.2* 17.4* 17.4* 12.6* 12.6* 13.09

17.8* 17.8* 17.2* 17.2* 16.1* 16.1* 11.8* 11.8* 14.33

17.9* 17.9* 17.1* 17.1* 16.5* 16.5* 13.4* 13.4* 11.3* 11.3* 15.32

18.3* 18.3* 17.4* 17.4* 16.6* 16.6* 16.0* 16.0* 10.9* 10.9* 16.10

19.1* 19.1* 17.9* 17.9* 16.9* 16.9* 16.1* 16.1* 12.4* 12.4* 10.8* 10.8* 16.70

22.2* 22.2* 20.2* 20.2* 18.6* 18.6* 17.4* 17.4* 16.2 16.3* 13.8 15.4* 10.7* 10.7* 17.15

33.8* 33.8* 28.0* 28.0* 24.2* 24.2* 21.5* 21.5* 19.5* 19.5* 17.9* 17.9* 16.0 16.7* 13.7 15.6* 10.7* 10.7* 17.45

39.6* 39.6* 31.4* 31.4* 26.3* 26.3* 22.9* 22.9* 20.4* 20.4* 18.4 18.6* 15.7 17.1* 13.6 15.8* 10.8* 10.8* 17.62

29.2* 29.2* 34.4* 34.4* 28.3* 28.3* 24.2* 24.2* 21.3* 21.3* 18.0 19.1* 15.4 17.4* 13.4 15.9* 11.0* 11.0* 17.65

16.4* 16.4* 36.7* 36.7* 29.9* 29.9* 25.3 25.3* 20.9 22.0* 17.7 19.6* 15.2 17.6* 13.3 15.9* 11.3* 11.3* 17.56

6.5* 6.5* 15.1* 15.1* 35.9* 35.9* 30.8 30.8* 24.7 26.0* 20.5 22.5* 17.4 19.8* 15.0 17.7* 13.2 15.6* 11.8* 11.8* 17.33

9.4* 9.4* 16.5* 16.5* 31.8* 31.8* 30.2 31.1* 24.3 26.2* 20.2 22.6* 17.2 19.8* 14.9 17.4* 13.2 14.9* 12.4* 12.4* 16.96

12.5* 12.5* 18.9* 18.9* 32.0* 32.0* 30.0 30.5* 24.1 25.8* 20.0 22.2* 17.1 19.2* 14.9 16.6* 13.2* 13.2* 16.44

21.8* 21.8* 34.4* 34.4* 29.0* 29.0* 24.1 24.6* 20.0 21.1* 17.2 18.0* 14.9* 14.9* 14.7* 14.7* 15.07

26.4* 26.4* 22.5* 22.5* 19.0* 19.0* 18.9* 18.9* 12.06

Height Can be slewed through 360° In longitudinal position of undercarriage Max. reach * Limited by hydr. capacity

The lift capacities are stated in metric tonnes (t) on the lifting gear’s stick tip, and can be lifted 360° on firm, level supporting surface. Capacities are valid for 600 mm wide double grouser pads. Indicated loads are based on ISO 10567 standard and do not exceed 75 % of tipping or 87 % of hydraulic capacity (indicated via *). Lifting capacity of the excavator is limited by machine stability, hydraulic capacity and maximum permissible load of the load hook. According to European Standard, EN 474-5: In the European Union excavators have to be equipped with an overload warning device, a load diagram and automatic check valves on the hoist cylinders, when they are used for lifting operations which require the use of lifting accessories.

R 974 C Litronic Machine for Industrial Applications 5

Industrial Attachment

with Industrial-Type Straight Boom 12.00 m

-10

-20

-30

-40

-2

-4

-6

-8

-10

-12

024681012141618202224

Attachment Envelope

1 with industrial stick 9.00 m 2 with industrial stick 9.00 m and grapple model 75 B

Operating Weight and Ground Pressure

The operating weight includes basic machine with counterweight

18.0 t, industrial-type straight boom 12.00 m, industrial stick 9.00 m and grapple model 75 B with 5 open tines 2.50 m

Undercarriage EW

Pad width mm 600 750 1,000* Weight kg 111,900 113,400 118,800 Ground pressure kg/cm

* flat pads

1.48 1.20 0.94

010203040506070

6 R 974 C Litronic Machine for Industrial Applications

+ 12 hidden pages

Liebherr R974C User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual