Hidraulic a 312

8/22/2019 Hidraulic a 312

1/22

Wheeled Excavator

Operating Weight: 12,900 - 14,650 kg

Engine Output: 81 kW / 110 HP

Bucket Capacity: 0.33 - 0.75 m

A 312


2/22

2 A 312 Litronic

Operational weight: 12,900 - 14,650 kg

Engine output: 81 kW / 110 HP

Bucket capacity: 0.33 - 0.75 m

A 312


3/22

3A 312 Litronic

ComfortThe A 312 Litronic compact excavators offer the operator

a generous workplace with state-of-the-art ergonomic de-

sign. The large window surfaces and sloping edges provide

a safe overview of the entire construction area.

ReliabilityWith over 50 years experience in producing hydraulic

excavators, Liebherr offers unique competence advan-

tages in both manufacturing and reliability. Equipped

with innovative features such as additional centrifugal

pre-filters for intake air and fuel, advanced technologies

are already built-in to the A 312 Litronic.

PerformanceLiebherr compact excavators excel with state-of-the-art

technology and high-quality workmanship. Designed for

maximum productivity, their intelligent construction al-

lows full exploitation of potential even in confined spaces.

Perfectly optimised Liebherr components give the A 312

Litronic outstanding operational characteristics.

EconomyThe Liebherr Litronic system increases the performance ofthe machines and reduces fuel consumption. Tailor-made

servicing is available through the individual service pro-

gram from Liebherr. Long service intervals as well as short

and quick servicing times increase cost-effectiveness of the

compact excavators.


4/22

4 A 312 Litronic

Equipment

Dual hoisting cylinders

Kinematics for higher

hoist capacities


5/22

5A 312 Litronic

Performance

Liebherr compact excavators excel with state-of-the-art technology and high-

quality workmanship. Designed for maximum productivity, their intelligent con-

struction allows full exploitation of potential even in confined spaces. Perfectly

optimised Liebherr components give the A 312 Litronic outstanding operational

characteristics.

High load performanceHigh load capacities Intelligent arrangement of the uppercarriage cou-

pled with ideal engine positioning for supporting

the ballast allows excellent balance.

Performance withoutcompromise

Maximum performance and power are available at

all times and guarantee high load performance.

High bucket fill factor The digging attachments have been specially de-

signed by Liebherr for high fill factors. The shape

of the bucket ensures good penetration character-

istics and guarantees excellent productivity.

Stable baseImportant precondition Specially selected solid steel components in con-

junction with the proven sump design provide

excellent stability under load conditions through

the use of the stabiliser blade, 2 pt. outriggers and

stabiliser blade with 2 pt. outriggers.

Transmission power The powershift transmission, fitted as standard,

allows fast hill driving and changing of gear with-

out stopping. The creeper gear allows precise ma-

noeuvring even in difficult terrain.

Litronic

Increases the performance

of the excavator

Reduces fuel consumption

Allows maximum sensitivity

Robust undercarriage

Different undercarriage variants with

securely welded stabilisers ensure

secure ground-holding, maximum

stability and long operational life

regardless of application

Stabiliser and leveller blade in box-

type design. Just two pivots ensure

high torsion rigidity


6/22

6 A 312 Litronic

Intelligent cooling

Thermostatically controlled cooling

system works on demand, reduces

fuel consumption and noise levels

Long operational life of the

transmission components

Accelerated warm-up phase and

regulation of cab temperature


7/22

7A 312 Litronic

Economy

Engine

Water-cooled diesel engine with

Common Rail, turbo-charged

Large 4.0 l displacement

Operational and driving engine

speed of only 1800 rpm

The Liebherr Litronic system increases the performance of the machines and

reduces fuel consumption. Tailor-made servicing is available through the individual

service program from Liebherr. Long service intervals as well as short and quick

servicing times increase cost-effectiveness of the compact excavators.

Low operating costsAutomatic idling During periods of inactivity (machine not driving

or working), the engine speed is reduced down toidling via a sensor, reducing fuel consumption andemissions.

Liebherr Tool Control As soon as the hydraulic attachment tool has beenchanged, the necessary pressure values and pumpflows can be accessed at the touch of a button. Upto 10 values can be saved under each tool name.Changing tools couldnt be quicker or easier.

Maintenance points Service points for the engine, such as filter or fill

level displays, are easily accessible.The large rear flap allows simple and quick main-tenance.

Comprehensiveservice program

Tailor-made servicing is available through the in-dividual service program from Liebherr. With ex-changeable components from the ReMan, ReBuiltand Repair programs, an ideal solution for everyrequirement is available with approved manufac-turer quality.

Future-proof and stable in valueTailor-made services Service personnel trained directly at the manufac-

turers offer tailor-made services. Direct contactwith Liebherr is ensured by the full integration ofall service centres within the Liebherr logistics sys-tem. Electronic access to our world-wide replace-ment parts management system allows a round-the-clock replacement part availability of 98%.

High resale value Liebherr excavators are built for a long operationallife through the use of high-quality materials anddurable quality of workmanship, thus guarantee-ing maximum stability of value.

Likufix

Quick-change system for hydraulic

and mechanical attachments

Changing of all attachments

from the operator cab

Considerable time-saving when

compared to manual connection

of the hydraulic hoses


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8 A 312 Litronic

Storage space-everythinghas its place

Large, lockable stowing

box in the uppercarriage

Two tool boxes in the under-

carriage, fitted as standard


9/22

9A 312 Litronic

Comfort

Foot room

Ergonomically laid-out foot

pedals for relaxing and

non-tiring operation

Steering column adjustment

via a handy foot lever

Non-slip foot mat with horizontal

Strips for easy cleaning of cab

Spacious cab

Operators seat adjustable to opera-

tors weight and with height adjustment.

Horizontally adjustable with or without

console

Adjustable steering column

Large roof window

Sunblind

The A 312 Litronic compact excavators offer the operator a generous workplace

with state-of-the-art ergonomic design. The large window surfaces and sloping

edges provide a safe overview of the entire construction area.

Mobile comfort

Excellent visibility The carefully designed uppercarriage with lowerheight, large window surfaces and rounded edgesincrease visibility and ensure a safe view over theentire working area.

Easy climb Wide steps, ergonomically designed handles undan adjustable steering column provide an easyand comfortable climb into the Liebherr operatorcab.

Pleasant environment The low engine speed, in conjunction with high-quality noise reduction and optimised hydrauliccomponents, ensure pleasant levels of internal

and external noise. Noise levels are similar tothose of modern diesel passenger cars.

Spacious Additional storage areas in the uppercarriage andundercarriage provide easy and generous storageof everyday tools.

Tempomat Constantly adjustable storage of the selectedengine speed promotes convenient driving andoperating.

Automotive driving When driving on road, your moving speed is easyto regulate with the engine speed via the accelera-tor pedal.

Maintenance benefits as standard

Easy accessibility Working on the engine is made easy due to thelarge engine compartment flap.

Ease of servicing Delivered as standard, the hydraulic tank shut-off valve disconnects the system and guaranteeseasy servicing work on the hydraulic system.


10/22

10 A 312 Litronic

Liebherr hydraulic cylinder

Optimised sizes for every machine

High-quality pin rod surface coating

The Liebherr cylinders are fitted with

a special long-life sealant system

End position dampening on both

sides in cylinders


11/22

11A 312 Litronic

Reliability

Cleaner air

Intake air is drawn in from the

cleanest area behind the cab

Filtering out of 96% of all dust

and water particles by upstream

centrifugal filter

The end result is extended

operational life of engine and long

intervals between filter change

With over 50 years experience in producing hydraulic excavators, Liebherr offers

unique competence advantages in both manufacturing and reliability. Equipped

with innovative features such as additional centrifugal pre-filters for intake air

and fuel, advanced technologies are already built-in to the A 312 Litronic.

Quality down to the last detailLiebherr components Components such as swing ring, swing drive, hy-

draulic cylinder and the electronic components aredeveloped, tested and manufactured by Liebherrespecially for construction machinery. Compo-nents such as swing ring and swing drive are op-timised to each other in the manufacturing phase,maintaining consistently high-quality standards.

Functional safety Delivered as standard, safety features such asautomatic check valves on hoist cylinders ensurehigh safety standards. The operator can concen-trate fully on the task because the integrated on-

board electronics constantly compare data withpredefined target values.

High-quality featuresFuel filter The Liebherr centrifugal fuel filter system dis-

charges water and dirt particles with 100% reli-ability and is delivered as standard.

Magnet rod Delivered as standard, the magnetic rod in the hy-draulic system extends the operational life of the oil.

Liebherr key technologies

Liebherr ball bearing swing ring,

internal teeth

Liebherr swing assembly drive

for high swing moment

Manufactured at competence

centres in Germany with state-

of-the-art production processes


12/2212 A 312 Litronic

Technical Data

EngineRating per ISO 9249 ____________ 81 kW (110 HP) at 1800 RPMModel ______________________________ Deutz TCD2012 L04 according to level IIIA / Tier 3Type ________________________________ 4 cylinder in-line

Bore/Stroke __________________ 101/126 mm

Displacement ______________ 4,0 lEngine operation ________________ 4-stroke diesel

Common Railturbo-charged

Exhaust emissions ______________ in accordance with EC-guidelinesCooling system __________________ water-cooled with stepless, thermostatic and

controlled fanAir cleaner ________________________ dry-type air cleaner with pre-cleaner and auto-

matic 95 % dust discharge (TopAir); main andsafety elements

Fuel tank __________________________ 210 lEngine idling ______________________ sensor controlledElectrical system

Voltage ______________________ 24 VBatteries ____________________ 2 x 92 Ah/12 V

Alternator ____________________ 24 V/55 A

Swing DriveDrive ________________________________ Liebherr swashplate motor with torque control

and integrated brake valveTransmission ______________________ Liebherr compact planetary reduction gearSwing ring ________________________ Liebherr sealed single race ball bearing swing

ring, internal teethSwing speed ______________________ 0 10 RPM steplessSwing torque ______________________ 38 kNm (acceleration adjustable)Holding brake ____________________ pedal controlled positioning brake

Operators CabCab ________________________________ largely dimensioned ergonomic cab resiliently

mounted, sound insulated, tinted windows, frontwindow stores overhead, door with slidingwindow, large roof window, sun visors

Operator seat ____________________ shock absorbing suspension, adjustable tooperators weight, 6-way adjustable seat, back-ward/forward seat adjusting with automaticheight adjustment

Joysticks __________________________ integrated into adjustable seat consoles

Monitoring ________________________ ergonomically arranged, non-glare instrumenta-tion, menu-driven retrieval of current operatingconditions via display, automatic monitoring, dis-play, warning (acoustic and visual) and saving ofanomalous operating conditions, such as engineoverheating and excessively low engine oil pres-sure or hydraulic oil level

Digital hour meter ________________ visible from outsideHeating system __________________ hot water heat exchanger to provide heated fresh

air or circulated air, with additional front windowair vents, operating unit in right console

Noise emissionISO 6396 __________________________ LpA (inside cab) = 72 dB(A)2000/14/EC________________________ LWA(surround noise) = 99 dB(A)Sound level in correspondence with Blue Angel guidelines.

UndercarriageDrive ________________________________ variable flow swashplate motor with automatic

brake valveTransmission ______________________ oversized two speed power shift transmission

with additional creeper speedTravel speed ______________________ 0 1,5 km/h (creeper speed off road)

0 5,0 km/h (off road)0 6,0 km/h (creeper speed on road)0 20,0 km/h (road travel)0 max. 30,0 km/h Speeder (Option)

Driving operation ________________ automotive driving with accelerator pedal, tempo-mat function: stepless saving of accelerator pedalposition, both off- and on-road

Axles ______________________________ 26 t excavator axles, automatic or operator con-trolled front axle oscillation lock

Brakes ____________________________ steering and rigid axle with wet, maintenance-freemulti disc brakes with minimized backlash.Spring applied/pressure released parking brake

integrated into gear boxStabilization ______________________ stabilizing blade (adjustable during travel fordozing)2 point outriggersstabilizing blade + 2 point outriggers

AttachmentHydraulic cylinders ______________ Liebherr cylinders with special seal system.

Shock absorptionPivots ______________________________ sealed, low maintenanceLubrication ________________________ centralized in easily accessible locationsBucket ____________________________ standard equipped with 8 t safety hook for lifting

Hydraulic ControlsPower distribution________________ via control valve with integrated safety valves,

simultaneous and independent operation of traveldrive, swing drive and work

Control typeAttachment and swing ____ proportional via joystick leversTravel ________________________ proportional via foot pedal

Additional functions______________ via switch and/or proportional foot pedals

Hydraulic SystemHydraulic pump __________________ Liebherr, variable displacement, swashplate

pumpMax. flow ____________________ 230 l/min.Max. hydr. pressure ________ 350 bar

Hydraulic pumpregulation and control __________ Liebherr-Synchron-Comfort-system (LSC) with

electronic engine speed sensing regulation, pres-sure and flow compensation, load sensing andtorque controlled swing drive priority

Hydraulic tank capacity ________ 150 lHydraulic system capacity ______ max. 240 lFiltration __________________________ one main return filter with integrated partial micro

filtration (5 m)Cooling system __________________ compact cooling system comprising cooling unit

for water, hydraulic oil and charge air with step-less, thermostatically controlled fan, fan for

cleaning cooling system folds away completelyEngine speed andoutput tuning ______________________ stepless alignment of engine output and hydraulic

power via engine speedE (ECO) ______________________ for especially economical and environmentally

friendly operationP (POWER) __________________ for high-performance excavation with low fuel

consumptionPP (POWER-PLUS) ________ for top-performance excavation and for very

tough operations, suitable for continuous opera-tion

Optional additional functionTool Control __________________ 10 steadily adjustable pump flows and pressures

for optional add-on tools selectable from thedisplay

Tool Control Plus __________ Tool Control with additional functions: different quantities possible on the forward and

return sides stepless adjustment of power distribution

between basic machine and add-ons stepless alignment of hydraulic controls andsensitivity to suit operating conditions


13/22

Dimensions

A 312 Litronic 13

C

B

A

Q

B1

E

D

L

U1

V

X

W

H

K

T1M

mm

A 2510

B 2550

B1 3750

B2 2550

C 3120

D 1945

E 1945H 2285

I2 450

I3 450

J2 625

J3 625

K 1185

L 2540

mm

M 1100

Q 360

T1 1237

T2 1230

T3 1180

U1 4125

U2 4315U3 4760

V1) 5250 5750

V2) 4650 5600

W1) 2850 2900

W2) 2800 3100

X1) 8050 8250

X2) 7600 8100

1) for hydr. adjustable boom2) for gooseneck boom

I2

U2T2

J2

BB2

J3

B

B1

I3

T3

U3

T1B2

Boom Stick F G R m mm mm mm

hydr. adjustable boom 2,05 7200 2500 1945hydr. adjustable boom 2,25 7200 2400 1945

gooseneck boom 2,05 6450 2950 1945

gooseneck boom 2,25 6450 2950 1945

G R

F


14/22

v

y

V

Y

Backhoe Attachmentwith Hydr. Adjustable Boom 3,20 m

14 A 312 Litronic

0 m123456789

0 ft51015202530

0

-1

-2

-3

-4

-5

0

-5

-10

-15

1

2

3

4

5

6

7

8

9

m

5

10

15

20

25

30

ft

10

-6-20

12

Digging Envelopewith Quick Change Adapter 1 2

Stick length m 2,05 2,25

Max. digging depth m 4,95 5,15Max. reach at ground level m 8,25 8,45

Max. dumping height m 6,70 6,85

Max. teeth height m 9,55 9,70

Operating Weight

The operating weight includes the basic machine with 8 tires plus

spacer rings, hydr. adjustable boom 3,20 m, stick 2,25 m, quick

change adapter 33 and bucket 850 mm/0,46 m3.

Undercarriage versions Weight

A 312 litronic with stabilizer blade 13450 kg

A 312 litronic with 2 pt. outriggers 13550 kg

A 312 litronic with stabilizer blade + 2 pt. outriggers 14250 kg

Digging Forceswithout Quick Change Adapter 1 2

Max. digging force (ISO 6015) kN 64,5 60,4

t 6,6 6,2

Max. breakout force (ISO 6015) kN 79,1 79,1

t 8,1 8,1

Max. breakout force with ripper bucket 111,3 kN (11,3 t)Max. possible digging force (stick 1,70 m) 72,4 kN ( 7,4 t)

Cuttingwidth

Capacity

ISO74511)

Weight

Buckets Machine stability per ISO 10567* (75 % of tipping capacity)Stabilizers Stabilizer 2 point Stabilizer blade

raised blade down outriggers + 2 pt. outr.

down down

Stick length (m) Stick length (m) Stick length (m) Stick length (m)

2,05 2,25 2,05 2,25 2,05 2,25 2,05 2,25

mm m3 kg

650 0,33 280 Y Y Y Y Y Y Y Y

850 0,46 330 Y Y Y Y Y Y Y Y

1050 0,60 380 V V Y Y Y Y Y Y

1250 0,75 430 y y V y Y Y Y Y

* Indicated loads are based on ISO 10567 and do not exceed 75 % of tipping or 87 % of hydraulic capacity, max. stick length without quick

change adapter, lifted 360 on firm with blocked oscillating axle1) comparable with SAE (heaped)

= 1,8 t/m3 max. material weight



=


15/22

v

y

V

Y

Backhoe Attachmentwith Gooseneck Boom 4,50 m

A 312 Litronic 15

0 m123456789

0 ft51015202530

0

-1

-2

-3

-4

-5

0

-5

-10

-15

1

2

3

4

5

6

7

8

9

m

5

10

15

20

25

30

ft

12






Operating Weight


spacer rings, gooseneck boom 4,50 m, stick 2,25 m, quick change

adapter 33 and bucket 850 mm/0,46 m3.





Digging Forceswithout Quick Change Adapter 1 2

Max. digging force (ISO 6015) kN 64,5 60,4

t 6,6 6,2

Max. breakout force (ISO 6015) kN 79,1 79,1

t 8,1 8,1

Max. breakout force with ripper bucket 111,3 kN (11,3 t)Max. possible digging force (stick 1,70 m) 72,4 kN ( 7,4 t)

Cuttingwidth

Capacity

ISO74511)

Weight

Buckets Machine stability per ISO 10567* (75 % of tipping capacity)Stabilizers Stabilizer 2 point Stabilizer blade


down down


2,05 2,25 2,05 2,25 2,05 2,25 2,05 2,25

mm m3 kg

650 0,33 280 Y Y Y Y Y Y Y Y

850 0,46 330 Y Y Y Y Y Y Y Y

1050 0,60 380 Y Y Y Y Y Y Y Y

1250 0,75 430 V y Y V Y V Y V


change adapter, lifted 360 on firm with blocked oscillating axle1) comparable with SAE (heaped)




=


16/22

Lift Capacitieswith Hydr. Adjustable Boom 3,20 m/Gooseneck Boom 4,50 m

16 A 312 Litronic

Stick 2,05 m Gooseneck Boom 4,50 m3,0 m 4,5 m 6,0 m 7,5 m

m Undercarriage mStabilizers raised

Stabil. blade down

2 pt. outr. down7,5Blade + 2 pt. down

Stabilizers raisedStabil. blade down

2 pt. outr. down6,0Blade + 2 pt. downStabilizers raised

Stabil. blade down


Stabil. blade down


Stabilizers raised

Stabil. blade down2 pt. outr. down1,5Blade + 2 pt. down


2 pt. outr. down0

Blade + 2 pt. downStabilizers raisedStabil. blade down

2 pt. outr. down 1,5Blade + 2 pt. downStabilizers raised

Stabil. blade down

2 pt. outr. down 3,0Blade + 2 pt. down

1,7* 1,7*

1,7* 1,7*1,7* 1,7*

1,7* 1,7*

5,10

2,9 3,4* 1,8 1,9* 1,6* 1,6*3,3 3,4* 1,9* 1,9* 1,6* 1,6*

3,4* 3,4* 1,9* 1,9* 1,6* 1,6*

3,4* 3,4* 1,9* 1,9* 1,6* 1,6*

6,08

5,1 5,9* 2,7 4,1* 1,8 3,0 1,5 1,7*5,8 5,9* 3,1 4,1* 2,0 3,4* 1,7* 1,7*

5,9* 5,9* 3,9 4 ,1* 2,5 3 ,4* 1,7* 1,7*

5,9* 5,9* 4,1* 4,1* 3,1 3 ,4* 1,7* 1,7*

6,58

4,4 7,9* 2,5 4,4 1,7 2,9 1,4 1,9*

5,1 7,9* 2,8 4,8* 1,9 3,7* 1,6 1,9*

6,9 7,9* 3,7 4,8* 2,4 3,7* 1,9* 1,9*7,9* 7,9* 4,6 4 ,8* 3,0 3 ,7* 1,9* 1,9*

6,69

4,2 8,1* 2,3 4,3 1,6 2,8 1,4 2,3*

4,8 8,1* 2,7 5,2* 1,8 3,8* 1,6 2,3*6,6 8,1* 3,5 5,2* 2,3 3,8* 2,1 2,3*

8,1* 8,1* 4,4 5 ,2* 2,9 3 ,8* 2,3* 2,3*

6,45

4,2 7,5* 2,3 4,2 1,6 2,9

4,8 7,5* 2,6 5,0* 1,9 3,2*6,6 7,5* 3,5 5,0* 2,4 3,2*

7,5* 7,5* 4,4 5,0* 3,0 3,2*

5,81

4,3 5,9* 2,4 3,9* 2,3 3,8*4,9 5,9* 2,7 3,9* 2,6 3,8*

5,9* 5,9* 3,5 3,9* 3,4 3,8*

5,9* 5,9* 3,9* 3,9* 3,8* 3,8*

4,60

Stick 2,25 m Gooseneck Boom 4,50 m3,0 m 4,5 m 6,0 m 7,5 m


Stabil. blade down




Stabil. blade down


Stabil. blade down


Stabilizers raised



2 pt. outr. down0

Blade + 2 pt. downStabilizers raisedStabil. blade down

2 pt. outr. down 1,5Blade + 2 pt. downStabilizers raised

Stabil. blade down


1,5* 1,5*

1,5* 1,5*1,5* 1,5*

1,5* 1,5*

5,35

1,8 2,2* 1,4* 1,4*2,1 2,2* 1,4* 1,4*

2,2* 2,2* 1,4* 1,4*

2,2* 2,2* 1,4* 1,4*

6,29

5,1 5,5* 2,8 3,9* 1,8 3,0 1,4 1,5*5,5* 5,5* 3,1 3 ,9* 2,0 3 ,3* 1,5* 1,5*

5,5* 5,5* 3,9* 3,9* 2,5 3 ,3* 1,5* 1,5*

5,5* 5,5* 3,9* 3,9* 3,1 3 ,3* 1,5* 1,5*

6,77

4,4 7,7* 2,5 4,5 1,6 2,9 1,3 1,7*

5,1 7,7* 2,8 4,7* 1,9 3,6* 1,5 1,7*

6,9 7,7* 3,7 4,7* 2,4 3,6* 1,7* 1,7*7,7* 7,7* 4,6 4 ,7* 3,0 3 ,6* 1,7* 1,7*

6,88

4,2 8,1* 2,3 4,3 1,6 2,8 1,4 2,0*

4,8 8,1* 2,7 5,2* 1,8 3,8* 1,5 2,0*6,6 8,1* 3,5 5,2* 2,3 3,8* 2,0* 2,0*

8,1* 8,1* 4,4 5 ,2* 2,9 3 ,8* 2,0* 2,0*

6,65

4,1 7,7* 2,3 4,2 1,5 2,7 1,5 2,7

4,8 7,7* 2,6 5,1* 1,8 3,0* 1,7 2,7*6,6 7,7* 3,4 5,1* 2,3 3,0* 2,3 2,7*

7,7* 7,7* 4,3 5 ,1* 2,9 3 ,0* 2,7* 2,7*

6,03

4,2 6,2* 2,3 4,1* 2,1 3,7*4,9 6,2* 2,6 4,1* 2,4 3,7*

6,2* 6,2* 3,5 4,1* 3,1 3,7*

6,2* 6,2* 4,1* 4,1* 3,7* 3,7*

4,87

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

The lift capacities on the load hook of the Liebherr quick-change adapter 33 without grab attachment are stated in metric tons (t) and are valid on a

firm, level supporting surface with blocked oscillating axle. These capacities can be slewed through 360 with the undercarriage in the transverse

position. Capacities in the longitudinal position of the undercarriage (+/ 15) are specified over the steering axle with the stabilizers raised and

over the rigid axle with the stabilizers down. The values apply when the adjusting cylinder is in the optimal position*. Indicated loads comply with

the ISO 10567 standard and do not exceed 75 % of tipping or 87 % of hydraulic capacity, or are limited by the permissible load of the load hook on

the quick-change adapter (max. 5 t). Without the quick-change adapter, lift capacities will increase by up to 110 kg.

In accordance with the harmonised EU Standard EN 474-5, hydraulic excavators used for lifting operations must be equipped with pipe ruptureprotection devices on the hoist cylinders and an overload warning device.

* with hydr. adjustable boom

Stick 2,05 m Hydr. Adjustable Boom 3,20 m3,0 m 4,5 m 6,0 m 7,5 m


Stabil. blade down2 pt. outr. down7,5Blade + 2 pt. downStabilizers raised

Stabil. blade down


Stabilizers raised

Stabil. blade down


Stabilizers raised




Stabil. blade down

2 pt. outr. down0Blade + 2 pt. downStabilizers raised

Stabil. blade down


Stabilizers raised

Stabil. blade down2 pt. outr. down 3,0Blade + 2 pt. down

2,5* 2,5*

2,5* 2,5*2,5* 2,5*

2,5* 2,5*

4,09

3,1 3,7* 2,0 2,2*3,4 3,7* 2,2* 2,2*

3,7* 3,7* 2,2* 2,2*

3,7* 3,7* 2,2* 2,2*

5,70

5,3* 5,3* 3,0 4,0* 1,9 3,1 1,5 2,1*

5,3* 5,3* 3,4 4,0* 2,1 3,4* 1,7 2,1*

5,3* 5,3* 4,0* 4,0* 2,6 3 ,4* 2,1* 2,1*

5,3* 5,3* 4,0* 4,0* 3,2 3 ,4* 2,1* 2,1*

6,59

5,1 7,2* 3,0 4,6* 1,8 3,1 1,3 2,2*

5,9 7,2* 3,3 4,6* 2,1 3,6* 1,5 2,2*

7,2* 7,2* 4,0 4,6* 2,6 3,6* 1,9 2,2*7,2* 7,2* 4,6* 4,6* 3,2 3 ,6* 2,2* 2,2*

7,05

5,2* 7,8* 2,9 4,6* 1,8 3,0 1,2 2,2

5,7 7,8* 3,3 5,1* 2,0 3,7* 1,4 2,4*7,2 7,8* 4,0 5,1* 2,5 3,7* 1,8 2,4*

7,8* 7,8* 4,7 5,1* 3,1 3,7* 2,3 2,4*

7,15

5,0 8,1* 2,8 4,6 1,6 2,9 1,2 2,25,8 8,1* 3,1 5,1* 1,8 3,8* 1,4 2,8*

7,3 8,1* 4,0 5,1* 2,4 3,8* 1,9 2,8*8,1* 8,1* 4,7* 5,1* 3,0 3 ,8* 2,3 2 ,8*

6,93

4,7 8,3* 2,5 4,5 1,5 2,8 1,4 2,55,4 8,3* 2,8 5,3* 1,7 3,4* 1,6 2,8*

7,3 8,3* 3,7 5,3* 2,3 3,4* 2,1 2,8*

8,3* 8,3* 4,6 5,3* 2,9 3,4* 2,6 2,8*

6,34

4,4 7,5* 2,3 3,9* 1,8 2,4*

5,1 7,5* 2,7 3,9* 2,1 2,4*

7,0 7,5* 3,5 3,9* 2,4* 2,4*7,5* 7,5* 3,9* 3,9* 2,4* 2,4*

5,25

Stick 2,25 m Hydr. Adjustable Boom 3,20 m3,0 m 4,5 m 6,0 m 7,5 m


Stabil. blade down2 pt. outr. down7,5Blade + 2 pt. downStabilizers raised

Stabil. blade down


Stabilizers raised

Stabil. blade down


Stabilizers raised




Stabil. blade down

2 pt. outr. down0Blade + 2 pt. downStabilizers raised

Stabil. blade down


Stabilizers raised

Stabil. blade down2 pt. outr. down 3,0Blade + 2 pt. down

2,2* 2,2*

2,2* 2,2*2,2* 2,2*

2,2* 2,2*

4,42

3,1 3,6* 1,9 2,0*3,4 3,6* 2,0* 2,0*

3,6* 3,6* 2,0* 2,0*

3,6* 3,6* 2,0* 2,0*

5,94

5,0* 5,0* 3,0 3,9* 1,9 3,1 1,4 1,9*

5,0* 5,0* 3,4 3,9* 2,1 3,3* 1,6 1,9*

5,0* 5,0* 3,9* 3,9* 2,7 3 ,3* 1,9* 1,9*

5,0* 5,0* 3,9* 3,9* 3,2 3 ,3* 1,9* 1,9*

6,80

5,2 6,9* 2,9 4,5* 1,9 3,1 1,2 2,0*

5,9 6,9* 3,3* 4,5* 2,1 3,5* 1,4 2,0*

6,9* 6,9* 4,0 4,5* 2,6 3,5* 1,8 2,0*6,9* 6,9* 4,5* 4,5* 3,2 3 ,5* 2,0* 2,0*

7,24

5,0 7,6* 2,9 4,5 1,8 3,0 1,2 2,1

5,7 7,6* 3,2 5,0* 2,0 3,7* 1,3 2,1*7,1* 7,6* 3,9 5,0* 2,5 3,7* 1,7 2,1*

7,6* 7,6* 4,7* 5,0* 3,1 3 ,7* 2,1* 2,1*

7,35

5,1 8,1* 2,8 4,6* 1,6 2,9 1,2 2,15,8 8,1* 3,1 5,1* 1,9 3,7* 1,3 2,5*

7,1* 8,1* 4,0 5,1* 2,4 3,7* 1,8 2,5*8,1* 8,1* 4,7 5,1* 3,0 3,7* 2,2 2,5*

7,13

4,7 8,2* 2,5 4,5 1,5 2,8 1,3 2,45,4 8,2* 2,8 5,2* 1,7 3,5* 1,5 2,7*

7,3 8,2* 3,7 5,2* 2,3 3,5* 2,0 2,7*

8,2* 8,2* 4,7 5,2* 2,9 3,5* 2,5 2,7*

6,56

4,4 7,9* 2,3 4,3 1,7 2,4*

5,1 7,9* 2,7 4,3* 1,9 2,4*

7,0 7,9* 3,5 4,3* 2,4* 2,4*7,9* 7,9* 4,3* 4,3* 2,4* 2,4*

5,52


17/22

v

y

V

Y

Clamshell Attachmentwith Hydr. Adjustable Boom 3,20 m

A 312 Litronic 17

0 m123456789

0 ft51015202530

0

-1

-2

-3

-4

-5

0

-5

-10

-15

1

2

3

4

5

6

7

8

9

m

5

10

15

20

25

30

ft

12-6-20

-7

Clamshell Model 8 B

Max. tooth force 52 kN (5,3 t)

Max. torque of hydr. swivel 1,40 kNm

Operating Weight



change adapter 33 and clamshell model 8 B/0,30 m3.









Widthofshells

Capacity

Weight

Clamshell Model 8 B Machine stability per ISO 10567* (75 % of tipping capacity)Stabilizers Stabilizer 2 point Stabilizer blade


down down


2,05 2,25 2,05 2,25 2,05 2,25 2,05 2,25

mm m3 kg

3201) 0,17 710 Y Y Y Y Y Y Y Y

4001) 0,22 750 Y Y Y Y Y Y Y Y

6001) 0,30 750 Y Y Y Y Y Y Y Y

8001) 0,40 800 V V Y Y Y Y Y Y10001) 0,80 900 v v v v V y Y V

3202) 0,17 760 Y Y Y Y Y Y Y Y

4002) 0,22 810 Y Y Y Y Y Y Y Y

6002) 0,30 830 Y Y Y Y Y Y Y Y

8002) 0,40 890 V y Y Y Y Y Y Y


change adapter, lifted 360 on firm with blocked oscillating axle1) without ejector2) with ejector




=


18/22

v

y

V

Y

Clamshell Attachmentwith Gooseneck Boom 4,50 m

18 A 312 Litronic

0 m12345678

0 ft510152025

0

-1

-2

-3

-4

-5

0

-5

-10

-15

1

2

3

4

5

6

7

8

m

5

10

15

20

25

ft

1 2-6-20

-7

Clamshell Model 8 B

Max. tooth force 52 kN (5,3 t)

Max. torque of hydr. swivel 1,40 kNm

Operating Weight



adapter 33 and clamshell model 8 B/0,30 m3.









Widthofshells

Capacity

Weight

Clamshell Model 8 B Machine stability per ISO 10567* (75 % of tipping capacity)Stabilizers Stabilizer 2 point Stabilizer blade


down down


2,05 2,25 2,05 2,25 2,05 2,25 2,05 2,25

mm m3 kg

3201) 0,17 710 Y Y Y Y Y Y Y Y

4001) 0,22 750 Y Y Y Y Y Y Y Y

6001) 0,30 750 Y Y Y Y Y Y Y Y

8001) 0,40 800 Y Y Y Y Y Y Y Y

10001) 0,80 900 v v y v y v y v

3202) 0,17 760 Y Y Y Y Y Y Y Y4002) 0,22 810 Y Y Y Y Y Y Y Y

6002) 0,30 830 Y Y Y Y Y Y Y Y

8002) 0,40 890 Y Y Y Y Y Y Y Y


change adapter, lifted 360 on firm with blocked oscillating axle1) without ejector2) with ejector




=


19/22

v

y

V

Y

Ditchcleaning Attachmentwith Hydr. Adjustable Boom 3,20 m

A 312 Litronic 19

0 m123456789

0 ft51015202530

0

-1

-2

-3

-4

-5

0

-5

-10

-15

1

2

3

4

5

6

7

8

9

m

5

10

15

20

25

30

ft

10

12

Operating Weight



change adapter 33 and ditchcleaning bucket 2000 mm/0,48 m3.


A 312 litronic`

with stabilizer blade 13450 kgA 312 litronic with 2 pt. outriggers 13550 kg







Cuttingwidth

Capacity

ISO74511)

Weight

Ditchcleaning Buckets Machine stability per ISO 10567* (75 % of tipping capacity)Stabilizers Stabilizer 2 point Stabilizer blade


down down


2,05 2,25 2,05 2,25 2,05 2,25 2,05 2,25

mm m3 kg

1700 0,29 280 Y Y Y Y Y Y Y Y

2000 0,34 330 Y Y Y Y Y Y Y Y

2000 0,48 360 Y Y Y Y Y Y Y Y

20002) 0,50 680 V y Y V Y Y Y Y

* Indicated loads are based on ISO 10567 and do not exceed 75 % of tipping or 87 % of hydraulic capacity, max. stick length without quickchange adapter, lifted 360 on firm with blocked oscillating axle1) comparable with SAE (heaped)2) with 2 x 50 rotator




=


20/22

v

y

V

Y

Ditchcleaning Attachmentwith Gooseneck Boom 4,50 m

20 A 312 Litronic

0 m12345678

0 ft510152025

0

-1

-2

-3

-4

-5

0

-5

-10

-15

1

2

3

4

5

6

7

8

m

5

10

15

20

25

ft

12

Operating Weight



adapter 33 and ditchcleaning bucket 2000 mm/0,48 m3.


A 312 litronic`

with stabilizer blade 12950 kgA 312 litronic with 2 pt. outriggers 13050 kg







Cuttingwidth

Capacity

ISO74511)

Weight

Ditchcleaning Buckets Machine stability per ISO 10567* (75 % of tipping capacity)Stabilizers Stabilizer 2 point Stabilizer blade


down down


2,05 2,25 2,05 2,25 2,05 2,25 2,05 2,25

mm m3 kg

1700 0,29 280 Y Y Y Y Y Y Y Y

2000 0,34 330 Y Y Y Y Y Y Y Y

2000 0,48 360 Y Y Y Y Y Y Y Y

20002) 0,50 680 Y Y Y Y Y Y Y Y

* Indicated loads are based on ISO 10567 and do not exceed 75 % of tipping or 87 % of hydraulic capacity, max. stick length without quickchange adapter, lifted 360 on firm with blocked oscillating axle1) comparable with SAE (heaped)2) with 2 x 50 rotator




=


21/22A 312 Litronic 21

Equipment

= Standard, + = Option, = not available

Options and/or special attachments, supplied by vendors other than Liebherr, are only to be installed with theknowledge and approval of Liebherr to retain warranty.

All illustrations and data may differ from standard equipment. Subject to change without notice.

UndercarriageTwo circuit travel brake with accumulator

Automotive driving

Wide tires +

Clam travel bracket with outriggers/prop-up blade down on one side only

Piston rod protection +Creeper speed electrically switchable from cab

New tires

Service free parking brake inside transmission

Independent outrigger control +

Choice of tires +

Auto check valve directly on each stabilizer cylinder

Proportional power steering with mechanical back up

Customized colors +

Tempomat

Lockable storage box

Two lockable storage boxes

Lockable storage box additional

Two-speed power shift transmission

Operators CabStorage trays left side rear

Displays for engine operating condition

Mechanical hour meters, readable from outside the cab

Roof hatch

6-way adjustable seat Airpressure operator seat with heating and head-rest +

Seat and consoles independently adjustable

Extinguisher +

Removable customized foot mat

Dome light

Cab heater with defroster

Cloth hook

Air conditioning +

Electric cool box +

Steering wheel adjustable

Bullet proof window (fixed installation can not be opened) +

Stereo radio +

Stereo radio/CD/MP3 +

Preparation for radio installation +

Rain hood over front window opening

Beacon +

All tinted windows

Door with sliding window

Optical and acoustical warning if outriggers are not fully retracted

Auxiliary heating +

Sun shade +

Sun roller blind

Electronic drive away lock +

Wiper/washer

Cigarette lighter and ashtray

Additional flood lights +

UppercarriageElectric fuel tank filler pump +Maintenance-free swing brake lock

Handrails, Non slip surfaces

Main switch for electric circuit

Engine hood with lift help

Pedal controlled positioning swing brake

Reverse travel warning system +

Sound insulation

Customized colors +

Hydraulic. pin lock upper/lower

Maintenance-free HD-batteries

Extended tool kit +

Lockable tool box

Tool kit

HydraulicsHydraulic tank shut-off valve

Extra hydr. control for hydr. swivel

Pressure compensation

Hook up for pressure checks

Pressure storage for controlled lowering of attachments with engine turned off

Filter with partial micro filteration (5m)

Electronic pump regulation

Stepless mode system (ECO)

Flow compensation

Full flow micro filtration +

Bio degradable hydraulic oil +

Tool Control +

Tool Control Plus +

AttachmentFlood lights on boom

Hydraulic controls for grapple operation with quick-disconnect hose couplers +

Sealed pivots

Safety lift hook on hoe buckets Liebherr line of clams +

Liebherr semi-automatic central lubrication system

Liebherr fully-automatic central lubrication system +

Likufix +

Safety check valves on hoist cylinder

Safety check valves on stick cylinder +

Hydraulic or manual quick change tool adapter +

Customized colors +

Special buckets and other tools +

Overload warning device +

Two way valves for bucket/clam use +

Locking of connections for clam operation +

Cylinders with shock absorber

EngineTurbo charger

Common Rail

Cold start aid +

Fold-away fans

Fuel/water filter

Sensor controlled engine idling

Dust package (recycling kit)

TopAir

Air filter with pre-cleaner main- and safety element

Reverse fan +


22/22

Liebherr Hydraulikbagger GmbH

Printed in Germany by Eberl RG-BK-RP LHB/VF 10472356-2-05.08

The Liebherr Group of Companies

Wide product rangeThe Liebherr Group is one of the largest construction

equipment manufacturers in the world. Liebherrs high-

value products and services enjoy a high reputation in

many other fields, too. The wide range includes domes-tic appliances, aerospace and transportation systems,

machine tools and maritime cranes.

Exceptional customer benefitEvery product line provides a complete range of models

in many different versions. With both its technical excel-

lence and acknowledged quality, Liebherr products offer

a maximum of customer benefits in practical application.

State-of-the-art technologyTo provide consistent, top quality products, Liebherr

attaches great importance to each product area, its

components and core technologies. Important modules

and components are developed and manufactured in-house, for instance the entire drive and control techno-

logy for construction equipment.

Worldwide and independentHans Liebherr founded the Liebherr family company in

1949. Since that time, the enterprise has steadily grown to

a Group of 100 companies with over 30,000 employees

located on all continents. The corporate headquarters of

the Group is Liebherr-International AG in Bulle, Switzerland.

The Liebherr family is the sole owner of the company.

www.liebherr.com

Hidraulic a 312

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