Liebherr R944C User Manual

Machine for Industrial Applications

Operating Weight: 71,600 – 73,700 kg Engine Output: 190 kW / 258 HP Electric Motor Output: 200 kW / 272 HP

R 944 C

li tr on ic

High Rise

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 Standard Electrical system Voltage Batteries Starter Alternator

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190 kW (258 HP) at 1,800 RPM Liebherr D 936 L 6 cylinder in-line 122/150 mm 10,5 l 4-stroke diesel

unit pump system turbo-charged and after-cooled

reduced emissions water-cooled and integrated motor oil cooler dry-type air cleaner with pre-cleaner, primary and

safety elements, automatic dust discharge 660 l sensor controlled engine idling

24 V 2 x 170 Ah/12 V 24 V/6,6 kW three phase current 28 V/80 A

Hydraulic System

Hydraulic pump for attachment and travel drive Max. flow Max. pressure Pump regulation

Hydraulic pump for swing drive

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

Hydraulic oil cooler

MODE selection

ECO

POWER LIFT FINE

RPM adjustment

Liebherr Tool Control

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two Liebherr variable flow, swash plate pumps 2 x 303 l/min. 350 bar electro-hydraulic with electronic engine speed

sensing regulation, pressure compensation, flow

compensation, automatic oil flow optimizer

reversible, variable flow, swash plate pump,

closed-loop circuit 205 l/min. 370 bar 460 l 710 l 2 full flow filters in return line with inte grated fine

filter area (5 µm) cooler unit, consisting of radiator for engine

coolant with after-cooler core, for hydraulic fluid

with hydrostatically controlled fan drive adjustment of machine performance and the

hydraulics via a mode selector to match applica-

tion for especially economical and environ mentally

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 ten preadjustable pump flows and pressures for

add on tools (option)

Hydraulic Controls

Power distribution

Flow summation Closed-loop circuit Servo circuit Attachment and swing Travel

– speed pre-selection Additional functions

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via monoblock control valve with integrated

safety valves to boom and stick for uppercarriage swing drive

proportional via joystick levers – proportional via foot pedals or removable hand

levers

via foot pedals or joystick toggle switch

Swing Drive

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Drive by Transmission Swing ring

Swing speed Swing torque Holding brake Option

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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

Version HR

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Drive

Transmission Travel speed

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

Brake valves

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Attachment

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Type

Hydraulic cylinders

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Pivots Lubrication

VarioLiftPlus

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Liebherr swash plate motor Liebherr compact planetary reduction gear Liebherr, sealed single race ball bearing swing

ring, internal teeth 0 – 8 RPM stepless 125 kNm wet multi-disc (spring applied, pressure released) pedal controlled positioning brake

built from deep drawn components, resil iently

mounted, sound insulated, tinted windows, front

window stores overhead, 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 air conditioning, combined cooler/

heater, additional dust filter in fresh air/recircu-

lated

LpA (inside cab) = 75 dB(A) LWA (surround noise) = 105 dB(A)

Liebherr swash plate motors with inte grated

brake valves on both sides Liebherr planetary reduction gears low range – 3.0 km/h

high range – 3.8 km/h 320 kN D 7 G, maintenance-free

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13/3 sealed and greased flat pad wet multi-discs (spring applied, pressure

released) integrated into travel motor

high-strength steel plates at highly-stressed

points for the toughest requirements. Complex

and stable mountings of attachment and cylin-

ders. Unrivalled strength, even at high loads Liebherr cylinders with special seal system.

Shock absorption sealed, low maintenance Liebherr semi-automatic central lubrication

system variable boom mounting positions for optimized

lift capacities

2 R 944 C Litronic High Rise

Version with Electric Motor

Electric Motor

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Motor

Power rating (as per CEI 34-1) Rated voltage Number of poles Design type

Standard degree of protection Insulation

Starter star/delta Heat protection for windings Heat protection for bearings Anti-condensation heating system resistors

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asynchronous three-phase, cage rotor enclosed

in cast iron envelope, special Liebherr design

200 kW (272 HP) at 1,485 RPM 400 V – 50 Hz * 4 horizontal axle B35

axle height 315 mm painting: RAL 7031

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IP55 – steel flange FF600 class F, thermal loading: Class B,

ambient temperature 40 °C

Electric System

The 400 V electrical cabinet provides a degree of protection to IP55. This houses the following components: – Main motorised isolator, controlled from the cab – Star/delta starter for motor – Outlets for supplying auxiliary elements: heating, climate control – Various heat protection devices – Resistors for controlling the temperature of the cabinet – Booster pump integrated in the cabinet: Cabinet air filtered (option) – Transformers – rectifier for 24 V control circuit – Motor protection attachment – Auxiliary batteries: 2 x 135 Ah/12 V: secured functions: lighting for excavator/

attachment position (option)

Hydraulic System

Hydraulic pump for attachment and travel drive Max. flow Max. pressure Pump regulation

Hydraulic pump for swing drive

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

Hydraulic oil cooler

Liebherr Tool Control

��

two Liebherr variable flow, swash plate pumps 2 x 305 l/min. 350 bar electro-hydraulic with electronic engine speed

sensing regulation, pressure compensation, automatic oil flow optimizer

reversible, variable flow, swash plate pump,

closed-loop circuit 205 l/min. 370 bar 460 l 710 l 2 full flow filters in return line with inte grated fine

filter area (5 µm) radiator equipped with hydrostatic drive fan for

cooling the hydraulic oil and climate control

condenser ten preadjustable pump flows and pressures for

add on tools (option)

Hydraulic Controls

Power distribution

Flow summation Closed-loop circuit Servo circuit Attachment and swing Travel

– speed pre-selection Additional functions

��

via monoblock control valve with integrated

safety valves to boom and stick for uppercarriage swing drive

proportional via joystick levers – proportional via foot pedals or removable hand

levers

via foot pedals or joystick toggle switch

Swing Drive

��

Drive by

Transmission Swing ring

Swing speed Swing torque Holding brake Option

��

Operator’s Cab

��

Cab

Operator’s seat

Joysticks Monitoring

Heating system

��

Undercarriage

Version HR

��

Drive

Transmission Travel speed

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

Brake valves

��

Attachment

��

Type

Hydraulic cylinders

��

Pivots Lubrication

VarioLiftPlus

��

Liebherr hydraulic motor with integrated brake

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

ring, internal teeth 0 – 7.9 RPM stepless 119 kNm wet multi-disc (spring applied, pressure released) pedal controlled positioning brake

built from deep drawn components, resil iently

mounted, sound insulated, tinted windows, front

window stores overhead, door with sliding

window shock absorbing suspension, adjustable to

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

conditions. Automatic monitoring, display,

warning (audible and visual signal) and saving

of machine malfunction data, such as overheating

of windings, motor bearings, or low hydraulic oil

level standard air conditioning, combined cooler/

heater, additional dust filter in fresh air/recircu-

lated

Liebherr hydraulic motor with integrated brake

valves on both sides Liebherr planetary reduction gears low range – 3.0 km/h

high range – 3.8 km/h 320 kN D 7 G, maintenance-free

��

13/3 sealed and greased flat pad wet multi-discs (spring applied, pressure

released) integrated into travel motor

high-strength steel plates at highly-stressed

points for the toughest requirements. Complex

and stable mountings of attachment and cylin-

ders. Unrivalled strength, even at high loads Liebherr cylinders with special seal system.

Shock absorption sealed, low maintenance Liebherr semi-automatic central lubrication

system variable boom mounting positions for optimized

lift capacities

* Other voltages and frequencies possible on request.

R 944 C Litronic High Rise 3

Dimensions

E D

mm A 6,150 A1 3,050 C with Rigid Cab Elevation 2 m 7,700 C* with Rigid Cab Elevation 2 m 8,160 C with Hydraulic Cab Elevation Parallelogram

+ Intermediate Piece 0,5 m 6,170

C* with Hydraulic Cab Elevation Parallelogram

+ Intermediate Piece 0,5 m 6,630 D 4,250 E 4,350 F 4,100 H with Rigid Cab Elevation 2 m 5,300 H* with Rigid Cab Elevation 2 m 5,760 H with Hydraulic Cab Elevation Parallelogram

+ Intermediate Piece 0,5 m 6,170 H* with Hydraulic Cab Elevation Parallelogram

+ Intermediate Piece 0,5 m 6,630 K 3,600 K* 4,060 L 6,000 P 1,280 Q 555 S 5,000 U 7,000 Z 7,750 N 750 B 5,830 G 5,860

E = Tail radius * = with Elevation

S B G

Industrial-Type Straight Boom 9.50 m and Industrial Stick m 7.30 7.30* 8.80 8.80*

V mm 8,850 8,350 7,000 7,300 W mm 5,700 6,160 5,700 6,160 X mm 14,300 14,300 14,300 14,300

Industrial-Type Straight Boom 10.50 m and Industrial Stick m 8.80 8.80* 9.50 9.50*

V mm 8,000 8,300 7,150 7,400 W mm 5,700 6,160 5,700 6,160 X mm 15,250 15,250 15,250 15,250

Industrial-Type Straight Boom 11.50 m and Industrial Stick m 9.50 9.50* 12.00 12.00*

V mm 8,150 8,450 ** ** W mm 5,700 6,160 5,700 6,160 X mm 16,250 16,250 16,250 16,250

Industrial-Type Gooseneck Boom 11.50 m and Industrial Stick m 9.50 9.50* 12.00 12.00*

V mm 7,400 7,500 ** ** W mm 5,950 6,400 5,950 6,400 X mm 16,100 16,100 16,100 16,100

** = without Stick

4 R 944 C Litronic High Rise

L U

S B G

VarioLiftPlus

Variable Boom Mounting Positions for Optimized Lift Capacities

with the same working range with a different working range

Hole A

Hole B

Hole 3

Hole 2

Version 2A

Kinematic variant 2A:

Increased lift capacities above ground level

Kinematic variant 3B:

Increased lift capacities below ground level and when working at large outreach

with a different working range

Kinematic variant 3A:

Altered range curve with additional reach depth, e.g. for unloading from ships

Hole C

Hole D

Hole 3

Hole 2

Version 3D

Kinematic variant 3D:

Increased lift capacities below ground level and when working at large outreach

Kinematic variant 3C:

Altered range curve with additional reach depth, e.g. for unloading from ships

R 944 C Litronic High Rise 5

Industrial Attachment

with Industrial-Type Straight Boom 9.50 m

ft m

-10

-20

-2

-4

-6

-8

024 68101214161820

0mft102030405060

Kinematic variant 2A

1 with industrial stick 7.30 m 2 with industrial stick 8.80 m 3 with industrial stick 7.30 m and grapple model 70 C 4 with industrial stick 8.80 m and grapple model 70 C

Operating Weight and Ground Pressure

Operating weight includes basic machine with hydraulic cab elevation parallelogram + intermediate piece 0.5 m, counterweight 11.0 t, industrial-type straight boom 9.50 m, industrial stick 7.30 m and grapple model 70 C with 5 semi-closed tines 1.10 m

Undercarriage HR

Pad width mm 750 Weight kg 71,600 Ground pressure kg/cm

Operating weight includes basic machine with hydraulic cab elevation parallelogram + intermediate piece 0.5 m, counterweight 11.0 t, industrial-type straight boom 9.50 m, industrial stick 8.80 m and grapple model 70 C with 5 semi-closed tines 1.10 m

Undercarriage HR

Pad width mm 750 Weight kg 71,900 Ground pressure kg/cm

0.80

Attachment Envelope

6 R 944 C Litronic High Rise

Lift Capacities

with Industrial-Type Straight Boom 9.50 m

Industrial Stick 7.30 m (Variant 2A)

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 Under m carriage m

25.5 HR

24.0 HR

22.5 HR

21.0 HR

19.5 HR

18.0 HR

16.5 HR

15.0 HR

13.5 HR

12.0 HR

10.5 HR

9.0 HR

7.5 HR

6.0 HR

4.5 HR

3.0 HR

1.5 HR 0 HR – 1.5 HR – 3.0 HR – 4.5 HR – 6.0 HR – 7.5 HR – 9.0 HR

11.6* 11.6* 10.0* 10.0*

11.5* 11.5* 9.3* 9.3* 8.3* 8.3*

12.4* 12.4* 11.2* 11.2* 9.2* 9.2* 7.4* 7.4*

12.9* 12.9* 11.5* 11.5* 10.3* 10.3* 8.7* 8.7* 6.9* 6.9*

13.0* 13.0* 11.5* 11.5* 10.3* 10.3* 9.3* 9.3* 7.5* 7.5* 6.6* 6.6*

13.2* 13.2* 11.6* 11.6* 10.3* 10.3* 9.3* 9.3* 8.3* 8.3* 6.4* 6.4*

13.6* 13.6* 11.8* 11.8* 10.4* 10.4* 9.3* 9.3* 8.3* 8.3* 7.3* 7.3* 6.4* 6.4*

15.4* 15.4* 14.2* 14.2* 12.2* 12.2* 10.6* 10.6* 9.4* 9.4* 8.3* 8.3* 7.3* 7.3* 6.3* 6.3*

17.9* 17.9* 18.2* 18.2* 14.8* 14.8* 12.5* 12.5* 10.8* 10.8* 9.4* 9.4* 8.3* 8.3* 7.2* 7.2* 6.2* 6.2*

26.0* 26.0* 19.3* 19.3* 15.4* 15.4* 12.8* 12.8* 10.9* 10.9* 9.4* 9.4* 8.2* 8.2* 7.0* 7.0* 5.8* 5.8*

9.7* 9.7* 19.8* 19.8* 15.6* 15.6* 12.8* 12.8* 10.8* 10.8* 9.3* 9.3* 8.0* 8.0* 6.7* 6.7* 5.4* 5.4*

6.3* 6.3* 19.3* 19.3* 15.3* 15.3* 12.6* 12.6* 10.6* 10.6* 9.0* 9.0* 7.6* 7.6* 6.3* 6.3* 4.9* 4.9*

6.5* 6.5* 14.3* 14.3* 14.5* 14.5* 12.0* 12.0* 10.0* 10.0* 8.4* 8.4* 7.0* 7.0* 5.6* 5.6* 4.3* 4.3*

7.7* 7.7* 13.6* 13.6* 13.0* 13.0* 10.9* 10.9* 9.1* 9.1* 7.6* 7.6* 6.2* 6.2* 4.5* 4.5* 4.4* 4.4*

12.5* 12.5* 10.9* 10.9* 9.3* 9.3* 7.8* 7.8* 6.3* 6.3* 5.1* 5.1*

6.91

9.50

11.31

12.69

13.78

14.62

15.28

15.76

16.09

16.27

16.31

16.22

15.98

15.11

13.31

Industrial Stick 8.80 m (Variant 2A)

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 Under m carriage m

25.5 HR

24.0 HR

22.5 HR

21.0 HR

19.5 HR

18.0 HR

16.5 HR

15.0 HR

13.5 HR

12.0 HR

10.5 HR

9.0 HR

7.5 HR

6.0 HR

4.5 HR

3.0 HR

1.5 HR 0 HR – 1.5 HR – 3.0 HR – 4.5 HR – 6.0 HR – 7.5 HR – 9.0 HR

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 750 mm track flat 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.

10.3* 10.3* 8.6* 8.6*

10.0* 10.0* 8.4* 8.4* 7.0* 7.0*

9.6* 9.6* 8.3* 8.3* 6.2* 6.2*

10.2* 10.2* 9.3* 9.3* 8.0* 8.0* 5.7* 5.7*

10.5* 10.5* 9.6* 9.6* 8.8* 8.8* 7.4* 7.4* 5.4* 5.4*

10.6* 10.6* 9.6* 9.6* 8.7* 8.7* 8.0* 8.0* 6.4* 6.4* 5.2* 5.2*

10.7* 10.7* 9.6* 9.6* 8.7* 8.7* 8.0* 8.0* 7.2* 7.2* 5.1* 5.1*

11.0* 11.0* 9.8* 9.8* 8.8* 8.8* 8.0* 8.0* 7.2* 7.2* 6.0* 6.0* 5.0* 5.0*

11.7* 11.7* 11.3* 11.3* 10.0* 10.0* 8.9* 8.9* 8.0* 8.0* 7.2* 7.2* 6.3* 6.3* 5.0* 5.0*

11.5* 11.5* 13.5* 13.5* 11.8* 11.8* 10.3* 10.3* 9.1* 9.1* 8.1* 8.1* 7.2* 7.2* 6.3* 6.3* 5.0* 5.0*

13.4* 13.4* 16.7* 16.7* 14.5* 14.5* 12.2* 12.2* 10.5* 10.5* 9.2* 9.2* 8.1* 8.1* 7.1* 7.1* 6.1* 6.1* 5.1* 5.1*

25.6* 25.6* 19.0* 19.0* 15.1* 15.1* 12.5* 12.5* 10.6* 10.6* 9.2* 9.2* 8.0* 8.0* 6.9* 6.9* 5.9* 5.9* 4.7* 4.7*

11.5* 11.5* 19.4* 19.4* 15.3* 15.3* 12.6* 12.6* 10.6* 10.6* 9.1* 9.1* 7.8* 7.8* 6.7* 6.7* 5.5* 5.5* 4.4* 4.4*

7.9* 7.9* 18.9* 18.9* 15.0* 15.0* 12.3* 12.3* 10.3* 10.3* 8.8* 8.8* 7.5* 7.5* 6.3* 6.3* 5.0* 5.0* 3.9* 3.9*

7.8* 7.8* 15.3* 15.3* 14.1* 14.1* 11.6* 11.6* 9.7* 9.7* 8.2* 8.2* 6.9* 6.9* 5.6* 5.6* 4.2* 4.2* 3.6* 3.6*

8.5* 8.5* 14.3* 14.3* 12.7* 12.7* 10.5* 10.5* 8.8* 8.8* 7.4* 7.4* 6.1* 6.1* 4.7* 4.7* 3.9* 3.9*

12.4* 12.4* 10.6* 10.6* 8.9* 8.9* 7.5* 7.5* 6.1* 6.1* 4.8* 4.8* 4.6* 4.6*

7.15

9.90

11.85

13.34

14.53

15.48

16.24

16.83

17.27

17.57

17.74

17.78

17.69

17.47

16.98

15.76

13.70

R 944 C Litronic High Rise 7

Industrial Attachment

with Industrial-Type Straight Boom 9.50 m

ft m

-10

-20

Attachment Envelope

Kinematic variants 3A/3B

1 with industrial stick 7.30 m (3B) 2 with industrial stick 7.30 m and grapple model 70 C (3B) 3 with industrial stick 7.30 m (3A) 4 with industrial stick 7.30 m and grapple model 70 C (3A)

Operating Weight

-2

-4

-6

-8

024 681012141618

and Ground Pressure

Undercarriage HR

Pad width mm 750 Weight kg 71,600 Ground pressure kg/cm

0.80

ft m

-10

-20

-30

0mft102030405060

Attachment Envelope

-2

-4

-6

-8

024 681012141620 18

Kinematic variants 3A/3B

1 with industrial stick 8.80 m (3B) 2 with industrial stick 8.80 m and grapple model 70 C (3B) 3 with industrial stick 8.80 m (3A) 4 with industrial stick 8.80 m and grapple model 70 C (3A)

Operating Weight and Ground Pressure

Operating weight includes basic machine with hydraulic cab elevation parallelogram + intermediate piece 0.5 m, counterweight 11.0 t, industrial-type straight boom 9.50 m, industrial stick 8.80 m and grapple model 70 C with 5 semi-closed tines 1.10 m

Undercarriage HR

Pad width mm 750 Weight kg 71,900 Ground pressure kg/cm

0.80

8 R 944 C Litronic High Rise

0mft102030405060

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