R 994 Technical Description Hydraulic Excavator

F
R 994
litronic
Technical Description
Hydraulic Excavator
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Operating weight with backhoe attachment 471,800 lb
Operating weight with shovel attachment 487,900 lb
Engine output 1256 BHP/923 kW
Bucket capacity 5.90 to 23.50 cuyd
Shovel capacity 13.70 to 23.50 cuyd
litronic
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– the total “system” comprised of intelligent
electronics and functional hydraulics – controls, regulates and coordinates all key systems of the excavator.
Powerful – turbo-charged and after-cooled 12 cylinder
diesel engine, with direct injection and low operating
RPM.
Productive – optimum utilization of available engine
output via electronic engine speed sensing pump regulation. Increased work speed through pump flow summation.
Operating safety – the electronic engine-speed-sensing
control protects the engine from overload. Pressure –
and flow compensation eliminate unnecessary oil circulation and consequently avoid excess heat as well as
component wear.
Comfortable – large well equipped, air conditioner and
sound insulated cab. Seat and joystick console independently adjustable to individual operator’s size and
weight.
Environmentally sound – low noise and exhaust emission. Optional: Bio degradable oil.
Easy service – clear and easy access to all components.
Large catwalks, steps and platforms. Sealed attachment pivots, central lubrication system and extended
service intervals reduce maintenance costs.
Versatile – different lengths of gooseneck booms,
assortment of sticks and an extensive variety of
buckets, bottom dump shovels and grapples provide
application versatility.
Economical – the combination of all the above, results in
top performance at low operating costs.
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This is
.
litronic
The Better Machine.
Engine
Cummins diesel engine
Rating per
SAE J 1349
Model
Type
Displacement
Bore/Stroke
Air cleaner
Fuel tank
Electrical system
Voltage
Batteries
Alternator
Engine idling
Air system
Swing Drive
1256 BHP/923 kW at 2100 RPM
reduced to 1126 BHP/840 kW at
1800 RPM
KTTA38-C 1350
12 cylinder V-engine, water-cooled,
direct injection, turbo-charged,
after-cooled
2306 cu.in
6.26/6.26 in
dry-type air cleaner with automatically dust ejector, primary
and safety elements
1030 gal
24 V
2 x 170 Ah/12 V
24 V/100 Amp
sensor controlled
1 cylinder compressor, maintenance-free, pressure regulator,
anti-freeze pump
Hydraulic motor
Gear
Swing ring
Swing speed
Swing torque
Swing-Holding brake
Uppercarriage
Design
Attachment mounting
Catwalks
Operator’s seat
Hydraulic System
Hydraulic pump
for swing drive
Max. flow
Max. hydraulic
pressure
Hydraulic tank
pressurization
Hydraulic tank capacity
Hydraulic system capacity
Hydraulic oil filter
Hydraulic oil cooler
Electronic engine
speed sensing
Lubrication
Controls
3 variable flow axial piston pumps
2 x 200 gpm + 1 x 133 gpm
4640 PSI
Electro-hydraulic, pressure compensation, flow compensation,
automatic oil flow optimizer
1 reversible swash plate pump,
closed-loop circuit
119 gpm
torque resistant modular design
upper frame
parallel length girders
on the left side of the upper
Operator’s Cab
Design
Hydraulic pumps
for attachment and
travel drive
Max. flow
Max. hydraulic
pressure
Pump regulation
2 Liebherr axial piston motors
2 Liebherr planetary reduction gears
Liebherr, sealed triple roller swing
ring, internal teeth
0 – 3,7 RPM
499,650 lbft
hydraulically actuated multi-disc
brakes, maintenance-free
Monitoring
Acoustical and
optical signal
Optical signal
Heating system/
air conditioning
resiliently mounted, sound insulated,
large windows for 360 h visibility,
integrated falling object protection
(FOPS)
suspended, body-contoured with
shock absorber, adjustable to operator’s weight, additional training seat
is standard equipment
joystick levers integrated into armrest of seat
via LED Display
in case of low engine oil pressure or
low coolant level. Automatic engine
shut of
in case of engine overheating or low
hydraulic oil level. Destroking of
main pumps
heavy duty, high output air conditioner and heater unit
5800 PSI
7 PSI
475 gal
634 gal
1 full flow filter in return line,
1 high pressure filter for each main
pump
separate vertically mounted
cooler, thermostatically
regulated fan
at rated engine speed setting
central lubrication system
Undercarriage
Hydraulic motor
Travel gear
Travel speed
Drawbar pull
Parking brake
Hydraulic brake valve
Track components
Track rollers/
carrier rollers
Track pads
Track chain adjustment
Transport
Axial piston motor
Liebherr planetary reduction gear
0 – 1.6 mph
332,700 lb
hydraulically actuated wet multi-disc
brakes, maintenance-free
mounted separately in the undercarriage
B 11, maintenance-free
10/2
Forged double grouser
hydraulic
undercarriage side frames are
removable
Hydraulic Controls
Servo circuit
Emergency control
Power distribution
Flow summation
Control functions
Attachment and swing
Travel
Additional functions
Independant, electric over
hydraulic proportional controls of
each function
via accumulator for attachment
functions with stopped engine
via monoblock control valves with
integrated primary and flanged-on
secondary relief valves
to attachment, hoist, stick and
bucket cylinders and travel drive
– proportional via joystick levers
– proportional via foot pedals or
hand levers for all travel functions
– via foot pedals or joystick toggle
switch
Technical Data
2
Attachment
Design
Pivots
Pivots bucket-to-stick
bucket-to-link
Lubrication
Hydraulic cylinder
Hydraulic connections
Bucket
box-type, welded structures with
large cast steel components
sealed
O-ring sealed and completely
enclosed
connected to the centralized lubrication system
Liebherr manufactured cylinders,
sealed bearings, hydraulic piston
cushioning
pipes and hoses equipped with SAE
split-flange connections
with lifting eye 50 t
ft-in
ft-in
A
A1
A2
B
C
D
D1
E
E1
G
K
T
17’ 8”
19’ 0”
20’10”
20’ 1”
23’ 4”
18’ 2”
18’10”
14’ 8”
18’ 8”
21’ 1”
6’11”
31’ 5”
W
X
L
M
N
P
Q
16’
9’
20’
26’
C1
T1
T2
22’11”
36’ 7”
55’ 5”
ft-in
ft-in
A
A1
A2
B
C
D
D1
E
E1
G
K
T
17’ 8”
19’ 0”
20’10”
20’ 1”
23’ 4”
18’ 2”
18’10”
14’ 8”
18’ 8”
21’ 1”
6’11”
31’ 5”
1”
1”
7”
6”
32”
6’11”
2’ 8”
W
X
L
M
N
P
Q
16’
9’
20’
26’
1”
1”
7”
6”
32”
6’11”
2’ 8”
C1
T1
T2
23’ 3”
32’ 9”
42’ 2”
Dimensions
3
Diesel engine
The heavy duty, water-cooled, turbo-charged and aftercooled Cummins Diesel engine delivers superior power
and high power reserves. Its low operating speed
results in lower fuel consumption, reduced emissions
and an extended engine life. The enclosed engine compartment is easily accessible through full sized, easy to
open doors and permits “walk in” access to all components for easy service.
Litronic-System
The electronic engine-speed-sensing pump regulation
allows full utilization of the engines available output,
independent from external influences. The variable
displacement axial piston pumps are fitted with an
electro-hydraulic regulator which reacts in fractions of
a second to the changing requirements of power or
speed.
Flow compensation reduces pump flow to a minimum
when joystick levers are in neutral, avoiding excess
heat and energy loss. The same effect is achieved with
pressure compensation which minimizes pump flow
prior to reaching maximum operating pressure. An
automatic oil flow optimizer assures efficient power
distribution to each individual function.
The operators comfort and efficiency is enhanced by
the LED display and monitoring system. It monitors all
vital machine functions and includes a variety of automatic safety features. The Litronic system offers extensive customer benefits, such as improved efficiency,
reduced fuel consumption and overall economy.
Undercarriage
An overall low center of gravity for the machine is
achieved through favorable weight distribution of the
machines undercarriage, upper structure and attachment. This low center of gravity, combined with a wide
undercarriage base, provides excellent stability in all
operating conditions.
The final drive consists of a Liebherr planetary reduction gear with a high mounted axial piston motor and
hydraulic lines integrated into the central girder for
maximum protection. Additional protection is provided
by the heavy duty hinged protective structure.
The two track frames are removable for easy transportation. Car body and track frames are connected with a
unique “hook and key” design, which shortens and simplifies assembly.
More Benefits Through Advanced
Technology.
4
Cab
The raised, spacious and comfortable cab features
oversized, tinted windows and offers an excellent view
of the trucks being loaded and general all-around visibility. The comfortable, air suspended and shock absorbed seat is adjustable to each individual operators
size and weight. An air conditioner, integrated into the
cab roof, is standard and increases operator comfort
even in the most adverse conditions. A falling object
protective structure (FOPS) is integrated into the roof.
The control and instrument panel is within easy view of
the operator. Service and control indicators, combined
in a display screen, conveniently and continuously
informs the operator, via symbols, of all machine functions. Effortless and precise joystick levers are comfortably integrated into the seat console.
Attachments
Strict use of fine grain alloy steel plates, true hollow
box structures and large size cast steel components in
high stress areas result in strong attachments with
high availability and long life expectancy. Widely spaced
pivots in the attachment allow the use of two short,
large diameter, hardened and chromed pins and low
wear, high alloy steel bushings. Completely sealed,
floating pins and bushings increase lubrication intervals and attachment availability.
Shovel and backhoe buckets are especially strong and
wear resistant. The optimized bucket shape achieves a
faster and higher degree of fill. A number of different
length sticks, booms and various size buckets allow the
machine to be tailored to all types of materials and
applications.
Swing Drive
Swing acceleration of the upper carriage is accomplished via two axial piston motors flanged to two
Liebherr planetary reduction gears. The swing pump
and swing motors are linked in an independent closedloop circuit. This system produces high swing torque,
fast swing accelerations and deceleration, requires less
power and shortens cycle times.
The high swing torque created by the Liebherr planetary
reduction gears, is transmitted to the Liebherr swing
ring which features internal teeth for maximum protection from external damage and contamination.
The swing operation is independent from all other travel
and attachment functions.
5
To order a complete machine
you need the following:
Id. Nh
x Basic machine
see page 12
x Hoist cylinders
9752034
x Gooseneck boom with
two stick cylinders
28’ 6”
9567132
x Stick with two bucket cylinders 13’ 1”
9567204
x Bucket – according to application
see below
Digging envelope
Max. reach at ground level
Max. teeth height
Max. dump height
Max. digging depth
50’10”
53’ 1”
35’ 1”
28’ 2”
Max. digging force
Max. breakout force
143,300 lb
163,150 lb
Buckets
Cutting width
in
Capacity SAE heaped
cuyd
Weight
lb
Id. Nh
Suitable for material up to a specific weight of lb/cuyd
1)
2)
3)
4)
1101)
11.80
22,050
9330283
4000
1161)
14.40
23,150
9355917
3360
1202)
15.70
24,250
9355918
3000
1242)
17.00
25,350
9355919
2700
Heavy duty rock bucket with teeth size 86 (LP)
Bucket with teeth size 86 (FP)
Bucket for material weighing not more than 2400 lb/cuyd, with teeth size 76 (FP)
Coal bucket, with teeth size 76 (FP)
Backhoe Attachment
with Gooseneck Boom 28”” 6”
6
1383)
19.60
24,250
9355920
2400
1524)
23.50
24,250
9573972
2000
To order a complete machine
you need the following:
Id. Nh
x Basic machine
see page 12
x Hoist cylinders
9752034
x Gooseneck boom with
two stick cylinders
35’ 6”
9332570
x Stick with two bucket cylinders 13’ 1”
18’ 4”
9332046
9332577
x Bucket – according to application
see below
Digging envelope
1) Stick 13’1”
2) Stick 18’4”
Stick length
13’ 1”
18’ 4”
Max. reach at ground level
Max. teeth height
Max. dump height
Max. digging depth
58’ 0”
55’ 9”
38’ 0”
35’11”
62’11”
58’ 0”
40’ 4”
41’ 0”
Max. digging force
Max. breakout force
143,300 lb
163,150 lb
Buckets
Cutting width
Capacity SAE heaped
Weight
Id. Nh
Suitable for material
up to a specific weight of
in
cuyd
lb
with stick 13’ 1”
with stick 18’ 4”
lb/cuyd
lb/cuyd
75
5.90
13,250
9333756
–
3700
81
7.45
15,900
9333757
3700
3000
91
9.40
18,650
9567481
3000
2500
110
11.80
22,050
9330283
2500
–
All buckets are heavy duty rock bucket with teeth size 86 (LP)
Backhoe Attachment
with Gooseneck Boom 35”” 6”
7
To order a complete machine
you need the following:
x Basic machine
Id. Nh
see page 12
x Extra hydraulic controls
for bottom dump bucket
9579465
x Hoist cylinders
9754325
x Shovel boom with two crowd cylinders
9752033
x Shovel stick with two bucket cylinders
9752015
x Bottom dump bucket –
according to application
see below
Digging envelope
Max. reach at ground level
Max. dump height
Max. crowd length
Bucket opening width F
41’ 6”
36’ 1”
16’ 5”
91”
Max. crowd force at ground level
Max. breakout force
216,000 lb
199,100 lb
Buckets
Cutting width
in
Capacity SAE heaped
cuyd
Weight
lb
Id. Nh
Suitable for material up to a specific weight of lb/cuyd
1)
2)
3)
1381)
15.70
43,200
9753686
3400
1501)
17.65
47,400
9388979
3000
Bottom dump bucket with Delta cutting edge and teeth size 81 (RYL)
Bottom dump bucket with straight spade nose cutting edge and teeth size 81 (SYL)
Coal bottom dump bucket with straight spade nose and teeth size 76 (FP)
Shovel Attachment
8
1241)
13.70
39,700
9753685
4100
1502)
19.60
48,050
9753687
2500
1593)
23.50
48,500
9573974
2000
Cab
L Length
H Height
Width
Weight
ft-in
ft-in
ft-in
lb
9’ 5”
9’ 4”
6’ 8”
5670
ft-in
ft-in
ft-in
lb
6’ 9”
7’10”
8’ 1”
4410
Cab elevation
L Length
H Height
Width
Weight
Upper with swing ring
L Length
H Height
H1 Height
Width
Weight
ft-in
ft-in
ft-in
ft-in
lb
25’ 1”
8’ 1”
12’ 0”
12’ 4”
99650
ft-in
ft-in
ft-in
lb
3’10”
7’ 9”
18’ 4”
43650
ft-in
ft-in
ft-in
lb
7’ 0”
7’ 0”
5’10”
3420
Counterweight
L Length
H Height
Width
Weight
Fuel Tank (one)
L Length
H Height
Width
Weight
Hydraulic oil cooling unit (one)
L Length
H Height
Width
Weight
ft-in
ft-in
ft-in
lb
6’ 7”
7’ 0”
5’ 2”
4190
Side panel (one each)
left
right
L Length
H Height
Width
Weight
3’ 1”
7’ 0”
5’ 3”
1060
3’ 3”
7’ 0”
6’ 9”
1985
ft-in
ft-in
ft-in
lb
Catwalk
L Length
H Height
Width
Weight
ft-in
ft-in
ft-in
lb
10’ 6”
2’ 3”
2’ 8”
400
Dimensions and Weights
9
Catwalk for cab
L Length
H Height
Width
Weight
ft-in
ft-in
ft-in
lb
front1)
lateral2)
back3)
1’11”
1’ 1”
2’ 8”
90
11’ 2”
1’ 5”
1’ 4”
287
4’ 0”
1’ 5”
1’ 8”
88
Railing (1 kit)
L1
L2
L3
L4
L5
Length
Length
Length
Length
Length
Height
Weight
ft-in
ft-in
ft-in
ft-in
ft-in
ft-in
lb
5’ 1”
14’ 9”
16’ 6”
4’ 9”
2’ 2”
3’ 4”
631
Undercarriage central girder
L Length
H Height
Width
Weight
ft-in
ft-in
ft-in
lb
15’ 1”
6’11”
12’ 0”
48500
Side frame (each) with complete
travel drive
L Length
H Height
Width
Weight
ft-in
ft-in
ft-in
lb
Ladder
L Length
H Height
Width
Weight
ft-in
ft-in
ft-in
lb
26’ 6”
6’11”
7’ 3”
74735
Cab1)
Undercarriage2)
8”
6’ 1”
1’ 6”
88
11”
4’11”
2’ 6”
2 x 165
Hoist cylinder (two)
L Length
l Diameter
Weight
ft-in
in
lb
13’ 5”
17”
2 x 4980
Gooseneck boom with stick cylinders
Boom length
ft-in
28’ 6”
35’ 6”
L Length
H Height
Width
Weight
ft-in
ft-in
ft-in
lb
30’ 0”
11’ 6”
5’10”
41885
37’ 5”
12’ 2”
5’10”
48500
Stick with bucket cylinders
Stick length
ft-in
13’ 1”
18’ 4”
L Length
H Height
Width
Weight
ft-in
ft-in
ft-in
lb
18’ 6”
8’ 2”
4’ 9”
28000
24’11”
7’10”
4’ 9”
29760
Dimensions and Weights
10
Backhoe buckets
Cutting width in
Capacity
L Length
H Height
Width
Weight
75”
81”
91”
110”
cuyd
5.90
ft-in 10’ 6”
ft-in
6’ 9”
ft-in
6’ 3”
lb
13230
7.45
10’ 6”
6’ 9”
6’ 9”
15870
9.40
10’ 6”
6’ 9”
7’ 7”
18630
11.80
11’ 2”
7’ 3”
9’ 2”
22045
Backhoe buckets
Cutting width in
Capacities
L Length
H Height
Width
Weight
116”
120”
124”
138”
152”
cuyd 14.40 15.70 17.00 19.60 23.50
ft-in 11’ 0” 11’ 0” 11’ 0” 11’ 0” 11’ 6”
ft-in
7’ 7” 7’ 7” 7’ 7” 7’ 7” 7’ 3”
ft-in
9’ 8” 10’ 0” 10’ 4” 11’ 6” 12’ 8”
lb
23150 24250 25350 24250 24250
Shovel boom with two crowd cylinders
L Length
H Height
Width
Weight without cylinders
Weight of crowd cylinders
ft-in
ft-in
ft-in
lb
lb
22’ 2”
8’ 2”
6’ 4”
30640
2 x 2755
ft-in
ft-in
ft-in
lb
15’ 5”
5’ 7”
8’ 6”
20280
Shovel stick
L Length
H Height
Width
Weight
Bucket tilt cylinders (two)
L Length
l Diameter
Weight
ft-in
in
lb
12’ 7”
13”
2 x 3200
Bottom dump buckets
Cutting width in
Capacity
L Length
H Height
Width
Weight
cuyd
ft-in
ft-in
ft-in
lb
124”
138”
150”
150”
159”
13.70
11’ 4”
11’ 6”
10’ 4”
39700
15.70
11’ 4”
11’ 6”
11’ 4”
43200
17.65
11’ 4”
11’ 6”
11’ 4”
47400
19.60
12’ 0”
11’ 6”
11’ 4”
48050
23.50
12’ 6”
11’10”
13’ 3”
48500
Dimensions and Weights
11
Basic Machine Contents
Id. Nh
Operating Weight and
Ground Pressure
with Backhoe Attachment
x Basic machine R 994 litronic`
0001085
with 32” pads:
x Double grouser pads 32”
9573992
The operation weight includes the basic machine with
backhoe attachment with 28’ 6” gooseneck boom,
13’ 1” stick and bucket 15.70 cuyd.
471,800 lb – 27.47 PSI
with Shovel Attachment
with 32” pads:
487,900 lb – 28.47 PSI
LFR/SP 8410802-2-01.96 Printed in Germany by Eberl. Subject to change without notice.
The operation weight includes the basic machine with
shovel attachment and bucket 17.65 cuyd.
LIEBHERR Construction Equipment Co., 4100 Chestnut Avenue, P.O. Box Drawer O, Newport News
VA 23605-0200, USA, ç (7 57) 2 45-52 51, Fax (7 57) 9 28-87 00
With compliments:
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