Transcript
C rawler Excavator R 944 C SME Operating Weight: 43,300 – 43,800 kg Engine Output: 190 kW / 258 HP Stufe IIIA / Tier 3 Bucket Capacity: 2.50 – 3.00 m³
R 944 C SME Litronic Operating Weight: 43,300 – 43,800 kg Engine Output: 190 kW / 258 HP Bucket Capacity: 2.50 – 3.00 m³
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R 944 C SME Litronic
Performance Liebherr crawler excavators feature state-of-the-art technology and high-quality workmanship. The most important components of the drive system are all produced by Liebherr and are perfectly coordinated with one another. The engine generation, as further developed for the “C-series”, assures an effective power delivery, a high degree of efficiency, long life expectancy and complies with the emission standard Stage IIIA / Tier 3.
Comfort In the operator’s station, the operator can look forward to a comfortable workstation that is designed according to the most up-to-date ergonomically know-how. The standard climate control provides a pleasant working environment in all weather conditions. Liebherr crawler excavators are particularly service-friendly: Maintenance work is simply and quickly accomplished due to well accessible service points.
Reliability High demand for performance and quality is consequently converted into landmark solutions to achieve the highest level of dependability and reliability. Liebherr has over 50 years experience in the production of hydraulic excavators and has an unparalleled competence in design and know-how.
Economy Liebherr crawler excavators stand for maximum productivity. The sensitive excavator controls assure optimal efficiency in the interaction of excavator hydraulics and electronics. A wide selection of attachments and buckets with various dimensions provide the correct choice for every application.
R 944 C SME Litronic
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Experience progress R 944 C SME Liebherr System Technology • Key-components such as engine, hydraulic pumps and motors, swing and travel gear boxes as well as electronic elements are developed and produced by Liebherr • Manufacturing centers for components located in Germany and Switzerland assure a maximum of quality
More Uptime • Steel casting elements at every pivot point for longer service life • Two separate pins with casted bell housing for optimal stress-flow • Innovative concept with latest steelworks • Centralized lubrication points for reduced maintenance time and less downtime
More Productivity • Additional 3rd pump for swing circuit assures highest priority on swing function and increases productivity • The on-demand hydrostatic fan drive takes off only the needed power to reduce fuel consumption
Higher Stability • Upsized undercarriage for better working and driving conditions • Strengthened frame for increased reliability and long-term durability • 4-piece track guide as standard for optimal travel performances
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R 944 C SME Litronic
More Profit thanks to ReGeneration Plus • Quicker attachment lowering, less pressure loss and more safety • Higher productivity due to optimization and consolidation of the functions “pressureless lowering”, “regeneration” and “load holding valves” • Less energy consumption resulting in less fuel consumption
More Operator Comfort • The automatic air conditioning creates a pleasant operator environment • Ergonomically designed seat assures comfortable working conditions • The easily readable color-touch display optimizes the configuration of the machine
Less Operating Costs • Electronic engine speed sensing control and maximum output at low engine speed for less fuel consumption • Conform with Stage IIIA / Tier 3 emission standard and environmental friendly • Developed and produced by Liebherr in Switzerland
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Technical Data Engine Rating per ISO 9249 Torque Model Type Bore Stroke Displacement Engine operation
Exhaust gas treatment
Cooling system Air cleaner Fuel tank Electrical system Voltage Batteries Starter Alternator Engine idling
Hydraulic System 190 kW (258 HP) at 1,800 RPM 1,210 Nm at 1,000 RPM Liebherr D934L 6 cylinder in-line 122 mm 150 mm 10.5 l 4-stroke diesel unit pump system turbo-charged and after-cooled reduced emissions emission standard stage IIIA / Tier 3 for applications at altitude higher than 3,000 m please contact your local dealer water-cooled and integrated motor oil cooler dry-type air cleaner with pre-cleaner, primary and safety elements 660 l
Hydraulic pump for attachment and travel drive Max. flow Max. pressure for swing drive
24 V 2 x 180 Ah / 12 V 24 V / 6.6 kW 28 V / 80 A sensor controlled
MODE selection
Hydraulic Controls Power distribution Flow summation Closed-loop circuit Servo circuit Attachment and swing Travel
Additional functions
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R 944 C SME Litronic
via control valves in single block with integrated safety valves to boom and stick for uppercarriage swing drive proportional via joystick levers – with proportionally functioning foot pedals or adjusted with plugable levers – speed pre-selection proportional regulation via foot pedals or joystick toggle switch
Max. flow Max. pressure Pump regulation
Hydraulic tank Hydraulic system Hydraulic oil filter Cooling system
ECO POWER LIFT FINE RPM adjustment Tool Control
two Liebherr variable flow, swashplate pumps 2 x 303 l/min. 350 bar reversible, variable flow, swashplate pump, closedloop circuit 205 l/min. 370 bar electro-hydraulic with electronic engine speed sensing regulation, pressure compensation, flow compensation 460 l 710 l 2 full flow filters in return line with integrated fine filter area (5 µm) cooling unit, consisting of radiators for engine coolant, charge air, fuel and hydraulic oil with hydrostatically controlled fan drive adjustment of engine and hydraulic performance via a mode pre-selector to match application for especially economical and environmentally friendly operation for maximum digging power and heavy duty jobs for lifting for precision work and lifting through very sensitive movements stepless adjustment of engine output via RPM at each selected mode 10 preadjustable pump flows and pressures for addon tools
Swing Drive Drive Transmission Swing ring
Swing speed Swing torque Holding brake
Liebherr swashplate motor Liebherr compact planetary reduction gear Liebherr, sealed race ball bearing swing ring, internal teeth. Lubrication via a grease distributor and a grease nipple 0 – 8 RPM stepless 125 kNm wet multi-disc (spring applied, pressure released)
Operator’s Cab Cab
Operator’s seat Control system Operation and displays
Air-conditioning Noise emission ISO 6396 2000/14/EC
built from deep drawn components, resiliently mounted, sound insulated, tinted windows, front window stores overhead, door with sliding window shock-absorbing suspension, adjustable to operator’s weight, 4-way adjustable seat integrated into adjustable seat consoles menu driven query of current operating conditions. Automatic monitoring, display, warning (acoustical and optical signal) and saving machine malfunction data, for example, engine overheating, low engine oil pressure or low hydraulic oil level standard air conditioning, combined cooler / heater, additional dust filter in fresh air/recirculated L pA (inside cab) = 75 dB(A) LWA (surround noise) = 105 dB(A)
Undercarriage S-HD Drive Transmission Maximum travel speed Net drawbar pull on crawler Track components Track rollers / Carrier rollers Tracks Track pads Holding brake Brake valves
S-HD-undercarriage for extreme applications Liebherr swashplate motors with integrated brake valves on both sides Liebherr compact planetary reduction gear low range 2.8 km/h high range 4.1 km/h 326 kN D7G, maintenance-free 10 / 2 sealed and greased double or triple grouser wet multi-disc (spring applied, pressure released) integrated into travel motor
Attachment Type Hydraulic cylinders Bearings Lubrication Hydraulic connections Bucket
combination of resistant steel plates and cast steel components Liebherr cylinders with special seal-system, shock protection sealed, low maintenance easy accessible centralised lubrication points for boom and stick pipes and hoses equipped with SAE split-flange connections standard equipped with 20 t lifting hook and Liebherr tooth system
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Dimensions E D
A
C
W
H K
P Q
S B G
U Z V X
mm 3,060 3,275 3,471 3,471 2,895 1,305 4,400 1,170 550 2,900 5,370 500 600 3,462 3,500 3,712 3,712 6,160
A C D E H K L P Q S U N B G Z
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R 944 C SME Litronic
R0434
N
L
Stick length m V 2.10 2.60 W 2.10 2.60 X 2.10 2.60
Mono boom SME 6.45 m mm 7,550 7,050 3,250 3,350 11,350 11,300
Backhoe Bucket with Mono Boom SME 6.45 m ft
Digging Envelope
m R0435
12 35
11 10
30 25
9 8 7
20 15
5 0 -5 -10
5
-20
3
m m m m m
Digging force ISO Breakout force ISO Digging force SAE Breakout force SAE Max. breakout force with ripper bucket and without quick coupler
2 1 0 -1
kN kN kN kN
1 224 234 213 208
2 197 234 188 208 300 kN
-2
Operating Weight and Ground Pressure
-3
The operating weight includes the basic machine with mono boom SME 6.45 m, stick SME 2.60 m and HD bucket 2.50 m3 (2,040 kg).
-5 -6
1
2
-7 -25
Max. digging depth Max. reach at ground level Max. dumping height Max. teeth height Max. vertical digging depth
1 2 2.10 2.60 SME SME 6.35 6.85 10.25 10.75 7.15 7.40 10.60 10.90 4.25 4.85
Forces
-4 -15
m
6
4 10
Stick length
-8
12
11
10
35
9 30
8
7 25
6 20
5
4 15
3 10
2
1 5
0 m
Undercarriage S-HD Pad width mm 500 600 Weightkg 43,300 43,800 Ground pressure kg/cm2 0.91 0.77
0 ft
S-HD-Undercarriage Weight
Capacity ISO 7451
Cutting width
Buckets Machine stability per ISO 10567* (75 % of tipping capacity)
HD2)
STD1)
Stick length (m) mm m3 kg 2.10 v 1,850 2.50 1,850 v 1,850 2.75 1,900 v 1,850 3.00 1,950 v 1,850 2.50 2,030 v 1,850 2.75 2,050 v 1,850 3.00 2,120 * Indicated loads are based on ISO 10567, at maximum reach, and may be swung 360° on firm and even ground 1) STD bucket for direct mounting with teeth Z 50 2) HD bucket for direct mounting with teeth Z 50 Other buckets available upon request
2.60 v v y v v y
Max. material weight v = ≤ 2.0 t/m3, y = ≤ 1.8 t/m3, – = not authorised
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Lift Capacities with Mono Boom SME 6.45 m Stick SME 2.10 m 3.0 m m
4.5 m
6.0 m
7.5 m
9.0 m
Undercarriage
m
9.0 S-HD 7.5 S-HD
10.5*
10.5*
11.3*
11.3*
5.1
9.8*
9.8*
6.7
6.0 S-HD
13.4*
13.4*
10.9*
10.9*
9.7*
9.7*
9.3*
9.3*
7.7
4.5 S-HD
16.1*
16.1*
11.9*
11.9*
9.5
10.0*
8.2
9.2*
8.3
3.0 S-HD
12.5
13.0*
9.2
10.4*
7.6
9.2*
8.6
1.5 S-HD
12.1
13.5*
9.0
10.6*
7.5
9.1*
8.6
0
S-HD
15.7*
15.7*
11.9
13.2*
8.8
10.4*
7.7
9.0*
8.4
11.9
12.1*
8.9
9.4*
8.5
8.7*
7.8
7.9*
7.9*
6.9
– 1.5 S-HD
12.4*
12.4*
14.9*
14.9*
– 3.0 S-HD
12.6*
12.6*
12.1*
12.1*
9.8*
9.8*
– 4.5 S-HD
Stick SME 2.60 m 3.0 m m
4.5 m
6.0 m
7.5 m
9.0 m
Undercarriage
m
9.0 S-HD
8.6*
8.6*
5.8
7.6*
7.6*
7.3
7.5 S-HD
9.8*
9.8*
6.0 S-HD
10.3*
10.3*
9.2*
9.2*
7.3*
7.3*
8.2
7.2*
7.2*
8.8
4.5 S-HD
15.0*
15.0*
11.4*
11.4*
9.6*
9.6*
3.0 S-HD
17.7*
17.7*
12.6*
12.6*
9.3
10.1*
7.1
8.6*
7.0
7.4*
9.1
1.5 S-HD
13.1*
13.1*
12.1
13.3*
9.0
10.5*
7.0
8.6*
6.9
7.9*
9.1
0
17.6*
17.6*
11.9
13.3*
8.8
10.5*
7.1
8.5*
8.8
8.7
9.8*
7.7
8.3*
8.3
S-HD
– 1.5 S-HD
13.6*
13.6*
16.0*
16.0*
11.8
12.5*
– 3.0 S-HD
15.7*
15.7*
13.5*
13.5*
10.7*
10.7*
7.8*
7.8*
7.4
9.3*
9.3*
6.6*
6.6*
6.4*
6.4*
6.1
– 4.5 S-HD Height
Can be slewed through 360°
In longitudinal position of undercarriage
Max. reach
* Limited by hydr. capacity
The load values are quoted in tons (t) at stick end (without bucket), and may be swung 360° on firm and even ground. Adjacent values are valid for the undercarriage when in the longitudinal position. Capacities are valid for 600 mm wide track pads. Indicated loads are based on ISO 10567 standard and do not exceed 75 % of tipping or 87 % of hydraulic capacity (indicated via *). Without bucket cylinder, link and lever the lift capacities will increase by 620 kg. Lifting capacity of the excavator is limited by machine stability and hydraulic capacity. 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 safety check valves on hoist cylinders and stick cylinder(s), when they are used for lifting operations which require the use of lifting accessories.
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R 944 C SME Litronic
Standard Equipment Undercarriage Chain guide 4 pieces Idler protection Track pads D7G 600 mm triple grouser Track rollers, lifetime-lubricated Tracks, sealed and greased Two-stage travel motors
Uppercarriage Easy accessible centralised lubrication points Engine hood with gas spring opening Handrails Main switch for electric circuit Maintenance-free HD-batteries Non slip surfaces Sound insulation Storage space, lockable Swing brake lock, maintenance-free Tool kit
Hydraulic System Electronic pump regulation Filter with integrated fine filter area Liebherr hydraulic oil Pressure storage for controlled lowering of equipment with engine turned off Pressure test ports for hydraulic Shut-off valve between hydraulic tank and pumps Work mode selector
Operator’s Cab Automatic air conditioning with defroster Cigarette lighter and ashtray Coat hook Interior light Load bearing sectional profile structure, covered with deep-drawn panels Mechanical hour meters, readable from outside the cab MP3 radio with USB and SD-Card support Multifunction display Rain hood over front window opening Rearview mirrors Rear window emergency exit Right window made of one piece Roll-down sun blinds (front and roof windows) Roof window, right window and windshield with laminated safety glass Rubber floor mat Seat and consoles independently adjustable (4-way adjustable seat) Seat belt Sliding windows in cab door Storage bin Storage space Tinted windows Wiper / washer
Attachment Bottom protection for stick Cylinders with shock absorber Easy accessible centralised lubrication points for boom and stick ReGeneration plus Safety check valves for hoist cylinders Sealed pivots / shaft seal between bucket and stick Working lights on boom
Engine Conform with stage IIIA / Tier 3 emission standard Dry-type air cleaner with pre-cleaner and safety elements Engine idling, automatic, sensor-controlled Intercooler Turbo charger Unit pump system
Non-exhaustive list, please contact us for further information.
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Options
Uppercarriage Arctic kit * Bottom and lateral protection for uppercarriage Rear mirror on counterweight and right side Refuelling pump (electrical) Winter kit *
Hydraulic System Filter for hydraulic hammer return flow High pressure circuit
Engine
Operator’s Cab Acoustic travel alarm deactivatable Additional headlights cab, front halogen, 2 pieces Additional headlights cab, rear, halogen, 2 pieces Air suspension operator seat with heating and head-rest Amber beacon on cabin Falling objects protection structure FOPS Fire extinguisher Front guard protection structure FGPS GPS system Rear view monitoring camera
Attachment 20 t lifting hook on bucket Additional headlight on boom Bottom protection for boom Hydraulic lines for additional tools Liebherr bucket range Liebherr central lubrication system, fully-automatic (except connecting link for bucket kinematics) Liebherr quick coupler, mechanical Overload warning device Protection for piston rod, bucket cylinder Protection for piston rods, hoist cylinder and ReGeneration Plus Tool Control, 10 tool adjustments selectable over the display
Air pre-filter with dust trap Engine cold starting aid Pre-heating system for fuel
* = for more details please contact your local dealer Non-exhaustive list, please contact us for further information.
Options and / or special attachments, supplied by vendors other than Liebherr, are only to be installed with the knowledge and approval of Liebherr in order to retain warranty.
Liebherr-France SAS 2 avenue Joseph Rey, B.P. 90287, FR-68005 Colmar Cedex S +33 389 21 30 30, Fax +33 389 21 37 93 www.liebherr.com, E-Mail:
[email protected] www.facebook.com/LiebherrConstruction
Printed in Germany by Eberl RG-BK LFR/SP 12218090-1-06.17_enGB All illustrations and data may differ from standard equipment. Subject to change without notice. All indicated loads are based in accordance with ISO 9248.
Undercarriage Chain guide 5 pieces Reinforced cover and base plate for undercarriage centre section Track pads D7G 500 mm double grouser Track pads D7G 600 mm double grouser Track pads D7G 500 mm triple grouser Travel drive protection
