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Technical description
Crawler loader
LR 622
litronic`
Engine output 97 kW / 132 HP
Operating weight 15.4 – 17.0 t / 34,000 – 37,500 lb
Bucket capacity 1.54 – 1.80 m3 / 2.01 – 2.35 cu.yd.
Hydrostatic travel drive with electronic control
The better machine.
The emissions optimized
engine.
The heart of the LR 622 Litronic is its sturdy turbocharged diesel engine with an output of 97 kW.
Liebherr diesel engines are specially made for
construction machine applications ensuring long
operating life.
They are emissions optimized and very economical
through low fuel consumption. The low engine
speed increases lifetime as well as reduces noise
emissions.
The hydrostatic drive.
Both tracks are driven independently by one
hydraulic pump and one hydraulic motor each. The
hydrostatic drive enables the machine to accelerate
travel forwards and reverse continuously and brake
without wear. Constant high efficiency can be
expected through the hydrostatic drive. Just one
joystick offers the operator excellent precision
steering all the way up to counter-rotation on the
spot.
With the press of a button, the operator can select
between two speed ranges.
In addition the LR 622 has a parking and safety
braking system installed in the final drive entirely
separated from the travel drive.
The Litronic Control.
The LR 622 travel drive is controlled and monitored by the Litronic System. It actively monitors
the current machine condition and is activated by
deviations from normal settings in the travel drive.
The integrated electronic engine speed sensing
control protects the machine against overload.
Exact straight travel is ensured with the Litronic
System.
The travel drive: versatile and economical.
2
Maneuverability.
Thanks to the hydrostatic travel drive, the LR 622 can also be controlled safely
and precisely in limited space.
3
Innovative track frame
technology.
The LR 622 has a specially developed track frame
for all kinds of applications.
Sturdy construction, high stability and increased
shock absorption were important factors when
designing the track frame.
The track frame has an oscillating suspension.
The cushioned suspension reduces shock loads to
the operator and the machine.
Cushioned track frame suspension.
Due to the machine's balanced center of gravity
combined with the long track, the LR 622 remains
stable even when travelling over ramps. The added
ground clearance makes the LR 622 the perfect
crawler loader in difficult terrain.
The track frame: Sturdy and stable.
4
Track gauge.
Because the track is connected to the main frame by only the
rugged pivot shaft and the oscillating equalizer bar, the track
gauge can be varied retaining all standard drive components.
Track frame oscillation.
The track frame has an oscillating suspension that reduces
engine vibration and shock loads to the operator.
5
Attachment hydraulics.
The attachment hydraulics have load sensing
control resulting in optimal precise control of the
attachment and reduced fuel consumption as
well as low hydraulic oil temperature.
The working attachment.
In order to provide high levels of operational safety
during the most difficult applications, the front
equipment is especially solid. For example,
we only use high-quality cast steel for parts that
are under extreme stress like the cross-pipe and
the Z-bar.
Front attachment.
Liebherr has available the right bucket option for every application,
starting with the standard bucket and including the 4-in-1 bucket,
all the way up to the special waste or heavy duty bucket.
Cross-pipe and
Z-bar are made of
cast steel.
The bucket pin, which gets
dirty easily due to its exposed
position, is constantly sealed
and lubricated to guarantee
maximum operational life.
The working attachment: powerful and ve
6
Ripper.
The ripper is mounted laterally
and thus increases rear load
weight only slightly.
rsatile.
7
Operating and maintenance
friendly.
The LR 622 cab is made to meet all the demands of
a modern construction machine. It offers roominess,
ergonomically optimized operating elements,
safety with integrated ROPS/ FOPS and excellent
visibility of the working attachment.
All travel drive functions are controlled with a
single joystick allowing the operator to fully
concentrate on the work to be done.
Single joystick operation.
The travel speed is regulated with the joystick,
by pushing the lever forwards (forward travel)
or backwards (reverse travel). The further the joystick is pushed, the higher the speed. By pulling
the joystick back, the machine can be slowed
or stopped gently. Curve travel is accomplished by
pushing the lever to the side.
To control the machine's movements, the operator
can choose between two speed ranges. All operating conditions are monitored by the Litronic
System. When critical values are reached, the operator is informed optically.
All of the LR 622 Litronic's maintenance points
are easily accessible. Long maintenance intervals
and short maintenance times result in ease of
maintenance.
Working environment: visibility and funct
8
Engine Compartment.
All maintenance points are accessible from one side ensuring
short maintenance times and ease of maintenance.
Foot Pedal Controls.
Optionally, the LR 622 crawler loader can be equipped
with foot pedal controls.
Tilted cab.
The tiltable cab offers optimal accessibility to the travel
drive.
ionality.
9
Diesel Engine
Liebherr-Diesel Engine ________
Rating per ISO 9249 ________
Displacement __________________
Bore/stroke ____________________
Design ____________________________
Injection
______________________________
Fuel filter
____________________________
Lubrication
Air filter
__________________________
______________________________
Operating voltage ________________
Alternator ____________________________
Starter ________________________________
Batterie ______________________________
D 924 T-E
97 kW (132 HP) at 2000 RPM
6,7 l (409 cu.in)
122 mm/142 mm (4.8/5.6 in)
4 cylinder in-line engine, watercooled, turbocharged, rear engine
installation
direct fuel injection with distributor
injection pump, mechanical governor
pre-cleaner with water separator and
micro filters
pressurized lube system with full
flow filter and integrated oil cooler,
deep oil pan for inclinations, engine
lubrication to an inclination of up to
45h to each side
dry type air filter with main and
safety element
24 V
55 Amp.
6,6 kW (9 HP)
110 Ah
Travel Control
1 joystick lever
____________________
with electronic control for all travel
functions: travel direction, speed,
steering and counter-rotation
0 – 5 km/h (0 – 3.1 mph)
0 – 11 km/h (0 – 6.8 mph)
Low speed range __________________
High speed range __________________
Electronic engine speed
sensing control ____________________ electronic regulation assures a constant balance between travel speed
and necessary drawbar pull through
engine speed sensing avoiding
engine overload, even in partial load
range
Straight line travel ________________ electronically controlled
Parking/emergency brake ______ automatically applied after the joystick lever is put in neutral position
Safety lever __________________________ inactivates complete travel and working hydraulic circuit and automatically activates parking brake
Emergency shut off ______________ push button on instrument panel
immediately activates parking and
emergency brake
Travel Drive
Design
________________________________
Pump flow ____________________________
Max. pressure ______________________
Travel speed ________________________
Steering ______________________________
Service brake ________________________
Parking/emergency brake ____
Cooling system
Filter system
Final Drive
____________________
________________________
__________________________
closed-loop hydrostatic drive, each
track is driven by one variable flow
swash plate-type pump and one
variable displacement motor
max. 164 l/min (41 gpm)
adjusted to 420 bar (6090 PSI)
0 – 11 km/h (0 – 6.8 mph) infinitely
variable, forward and reverse
hydrostatic
hydrostatic
automatic spring-activated parking
brake, released by servo-pressure
during travel
hydraulic oil cooler with separate
cooling circuit with gear pump and
rear mounted cooler
cartridge micro filters in the cooling
circuit
2-stage planetary reduction gear
Implement Hydraulic
Hydraulic system __________________ load sensing proportional pump flow
control, variable flow swash plate
piston pump and pressure compensation
____________________________
Pump flow
max. 156 l/min (41 gpm)
Pressure limitation ______________ max. 260 bar (3770 PSI)
Control valve ________________________ 2 spool control block, can be expanded to 4 circuits
Filter system ________________________ return filter with magnetic rod in
hydraulic tank
Control ________________________________ single servo-assisted joystick lever
for all bucket functions, electrical
switches for bucket positioning and
bucket-float
Operator’s Compartment
Track Frame
Design
________________________________
Mount
__________________________________
Chains
________________________________
Chain links __________________________
Sprockets ____________________________
Track rollers ________________________
Carrier rollers ______________________
Cab
maintenance-free tractor-type track
frames
elastic components at the pivot shaft
and the oscillating equalizer bar
lubricated, track chain tension
through grease tensioner cylinders,
double or triple grouser pads
42
9 replaceable segments
6
1
______________________________________
Operator’s seat
____________________
Instrument panel
Ventilation
Heater
__________________
__________________________
________________________________
resiliently mounted, with integrated
ROPS (Roll Over Protective Structure,
ISO 3471) and FOPS (Falling Objects
Protective Structure, ISO 3449), can
be tilted with hand pump to the rear
for accessibility to machine components, all around safety glass
fully adjustable, suspended seat, adjustable to operator weight
comprehensive instrument panel on
the right side of the operator’s seat
pressurized filtered air ventilation,
3 stage blower, 6 air nozzles
hot water heater
Attachments
Z-bar linkage ________________________ gives maximum of breakout-force and
optimum of working speed, the single
tilt cylinder allows optimum view of
the bucket
Buckets ________________________________ standard and multi-purpose bucket
are equipped with 8 replaceable teeth
Cycle times __________________________ lifting
6,5 seconds
lowering 2,1 seconds
tilting out 1,5 seconds
Technical Data
10
Refill Capacities
Fuel tank ________________________________________________________________ 260 l (68.7
Cooling system __________________________________________________________ 42 l (11.1
Engine oil __________________________________________________________________ 18 l (4.7
Splitterbox ________________________________________________________________ 2.5 l (0.6
Hydraulic tank ________________________________________________________ 130 l (34.3
Final drive, each __________________________________________________________ 13 l (3.4
gal)
gal)
gal)
gal)
gal)
gal)
Basic Machine
B A
G
D
H
E
F
C
Dimensions
A
B
C
D
E
F
G
H
Height over cab
Height over exhaust pipe
Overall length without attachment
Distance idler/sprocket center
Crawler length
Track gauge
Ground clearance
Width of trackpads
Ground contact area:
trackpad-width 457 mm/18”
508 mm/20”
560 mm/22”
660 mm/26”
LR 622
LR 622 M
mm/ft-in
mm/ft-in
3129/10’3”
3092/10’2”
4339/14’3”
2478/8’2”
3418/11’3”
1680/5’6”
395/1’4”
457/508/560/18”/20”/22”
3129/10’3”
3092/10’2”
4339/14’3”
2478/8’2”
3418/11’3”
1780/5’10”
395/1’4”
660/26”
2,26 m2/3,500 sq.in
2,52 m2/3,900 sq.in
2,77 m2/4,300 sq.in
–
–
–
–
3,27 m2/5,070 sq.in
Dimensions
11
Standard Bucket
57°
45°
50°
E
C
F
B
52°
40°
G
15°
D
Capacity ISO heaped
Breakout force
Static tipping load
Dimensions
A
B
C
D
E
F
G
H
Overall length
Dumping height at 45h
Reach at 45h
Max. digging depth below grade
Overall height
Max. height of hinge pin
Height of hinge pin transport position
Width of bucket
Operating Weights
H
A
LR 622
LR 622
LR 622 M
Version with
weld-on teeth
Version with
bolt-on teeth
and segments
Version with
weld-on teeth
1,8 m3/2.35 cu.yd
1,75 m3/2.29 cu.yd
1,75 m3/2.29 cu.yd
136 kN (13865 kg)/30,572 lb 127 kN (12965 kg)/28,588 lb 140 kN (14310 kg)/31,554 lb
10600 kg/23,373 lb
10470 kg/23,086 lb
10820 kg/23,858 lb
mm/ft-in
mm/ft-in
mm/ft-in
6117/20’1”
2905/9’6”
1025/3’4”
110/0’4”
5000/16’5”
3662/12’0”
503/1’8”
2450/8’0”
6191/20’4”
2849/9’4”
1048/3’5”
132/0’5”
5000/16’5”
3662/12’0”
503/1’8”
2440/8’0”
6092/20’
2923/9’7”
1007/3’4”
110/0’4”
4978/16’4”
3662/12’0”
503/1’8”
2600/8’6”
kg/lb
kg/lb
kg/lb
Standard bucket
Basic machine with standard bucket and
triple-grouser trackpads 457 mm/18”
double-grouser trackpads 508 mm/20”
double-grouser trackpads 560 mm/22”
double-grouser trackpads 660 mm/26”
1080/2,381
1270/2,800
1120/2,470
15400/33,957
15400/33,957
15500/34,117
–
15590/34,376
15590/34,376
15690/34,596
–
–
–
–
15800/34,838
Ground Pressures
kg/cm2/PSI
kg/cm2/PSI
kg/cm2/PSI
0.68/9.67
0.61/8.68
0.56/7.97
–
0.69/9.67
0.62/8.82
0.57/8.11
–
–
–
–
0.48/6.83
Basic machine with standard bucket and
triple-grouser trackpads 457 mm/18”
double-grouser trackpads 508 mm/20”
double-grouser trackpads 560 mm/22”
double-grouser trackpads 660 mm/26”
Attachments
12
Multi-purpose Bucket
57°
45°
E1
E
50°
I
C1
C
F
B1
B
52°
40°
G
15°
D
H
A
Capacity ISO heaped
Breakout force
Static tipping load
Max. clamping force
Dimensions
A
B
B1
C
C1
D
E
E1
F
G
H
I
Overall length
Dumping height at 45h (bucket)
Dumping height at 45h (blade)
Reach at 45h (bucket)
Reacht at 45h (blade)
Max. digging depth below grade
Overall height (bucket closed)
Overall height (bucket opened)
Max. height of hinge pin
Max. height of hinge pin, transport position
Width of bucket
Width of opening
Operating Weights
LR 622
LR 622
Version with
weld-on teeth
Version with
bolt-on teeth
and segments
1,54 m3/2.01 cu.yd
120 kN (12275 kg)/27,066 lb
9325 kg/20,562 lb
91,7 kN (9345 kg)/20,606 lb
1,6 m3/2.09 cu.yd
113 kN (11555 kg)/25,479 lb
9185 kg/20,253 lb
91,7 kN (9345 kg)/20,606 lb
mm/ft-in
mm/ft-in
6250/20’6”
2796/9’2”
3252/10’8”
1064/3’6”
629/2’1”
160/0’6”
4896/16’1”
5505/18’1”
3662/12’0”
503/1’8”
2450/8’0”
1212/4’0”
6330/20’9”
2741/9’0”
3252/10’8”
1089/3’7”
629/2’1”
180/0’7”
4896/16’1”
5556/18’3”
3662/12’0”
503/1’8”
2440/8’0”
1212/4’0”
kg/lb
kg/lb
Multi-purpose bucket
Basic machine with multi-purpose bucket and
triple-grouser trackpads 457 mm/18”
double-grouser trackpads 508 mm/20”
1615/3,561
1750/3,859
16000/35,280
16000/35,280
16135/35,578
16135/35,578
Ground Pressures
kg/cm2/PSI
kg/cm2/PSI
0.71/10.1
0.64/9.1
0.71/10.1
0.64/9.1
Basic machine with multi-purpose bucket and
triple-grouser trackpads 457 mm/18”
double-grouser trackpads 508 mm/20”
13
Ripper
H
B C
D
I
A
E
F
G
Radial ripper, 3 shank rigid-type equipped with 3 shanks
Ripper tips: ESCO
Dimensions
mm/ft-in
A
B
C
D
E
F
G
H
I
166/0’7”
1760/5’9”
1996/6’7”
712/2’4”
352/1’2”
676/2’3”
729/2’5”
850/2’9”
21h
Ground clearance below toolbar
Ripping width
Toolbar width
Lifting height
Ripping depth reach
Additional length attachment raised
Additional length attachment lowered
Distance between teeth
Angle
Weight
Ripper complete
Attachments
14
kg/lb
790/1,742
Basic machine
Exhaust cathalyst
Tow switch
Towing hitch rear
Towing lug front
Forestry equipment
Landfill equipment
Battery compartment lockable
Filling with environmental friendly oil
Filling with oil SAE 30
Filling with oil SAE 10
Tank protection complete
Refuelling pump electrical
Belly pans heavy duty
Cold start device ether
Cold start device glow plug
Radiator coarse mesh
Radiator guard hinged
Radiator guard heavy duty
Liebherr Diesel engine
Fan – hydraulically driven
Fan guard
Engine hood perforated
Engine oil cooler
Engine doors perforated
Engine doors hinged, lockable
Lugs for crane lifting
Special paint
Fuel water separator
Fuel water separator with electric heater
Air filter dry – type, dual step
Precleaner with automatic dust ejector
Tool kit in batteries compartment
Operator’s cab
NEW!
Standard Option
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
NEW!
NEW!
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Battery charging
Hour meter
Electronic control
Speed range
Engine oil pressure
Water temperature
Oil pressure cooling circuit
Oil level final drives
Float position bucket
Fuel level
Contamination hydraulic filter
Contamination air filter
Cold start Diesel engine
Oil temperature indicator
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Hydraulic control 4in1-bucket
Hydraulic control ripper
Hydraulic control winch
Bucket positioner automatic
Variable flow pump, load sensing
Oil filter with strainer in hydraulic tank
Bucket quick drop
Bucket float position
Control block for 2 circuits
Hydraulic servo control
Hydraulic tank oil level control
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Electrical system
Starter motor 6,6 kW
Ligths additional rear 2 units
Lights additional front 2 units
Battery main switch electric
Batteries heavy duty cold start
On-board voltage 24 V
Alternator 55 A
Alternator 80 A
Back-up alarm
Beacon
Horn
Start lock electronic
Working lights front 2 units
Working lights rear 2 units
Instruments – Indicators
Implement hydraulic
Undercarriage
Resilient mounting
Track frames closed
Sprocket segments bolt-on
Master link 2-piece
Trackshoes with relief holes
Tracks oil lubricated
Track guide center part
Track guard
Undercarriage standard
Undercarriage low ground pressure
Track frames oscillating +/Ä 1h
Pivot shafts separate
Sprocket segments with recesses
Standard Option
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Travel drive
Parking brake automatic
Function control automatic
Control single lever
Load limit control automatic
Travel control electronic
Steering with foot pedals
Travel control 2-speed
Hydrostatic travel drive
Steering with foot pedals
Emergency stop
Oil cooler
Final drives planetary gear
Safety lever
Stowing box
Armrest adjustable
Ashtray
Pressurizer with air filter
Operator’s seat 6-way adjustable
Operator’s seat suspended
Fire extinguisher
Dome light
Coat hook
Air conditioner
FM radio
Radio installtion kit
ROPS-canopy
ROPS/FOPS-cab sound supressed
Rear mirror inside
Safety glass tinted
Windscreen washer
Windsreen wipers front + rear
Sliding windows
Protective grids for windows
Extension operator’s seat back rest
Sun blinds
Cabin heater, warm water
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Attachments
Back drag edge for bucket
Drawbar rear rigid
Trash grid for bucket
Counterweight rear
Ripper 3 shank
Ripper 5 shank
Bucket – 4in1-bucket
Bucket – heavy duty bucket
Bucket – landfill bucket
Bucket – standard bucket
Bumper rear
Cutting edge with teeth and segments
Quick coupler system for bucket
Guard tilt cylinder
Guard 4in1-bucket clamp cylinders
Winch
Spill plate for bucket
Bolt-on cutting edge for bucket
Central lubrication electrical
Additional weight rear
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Standard and Optional Equipement
15
LWT/VM 8434212-1-09.02 Printed in Germany by BVD.
Subject to modification.
LIEBHERR-WERK TELFS GMBH, Hans-Liebherr-Straße 35, A-6410 Telfs, ç (0 52 62) 6 00, Fax (0 52 62) 6 00 72
www.liebherr.com, e-Mail: [email protected]
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