INTRODUCTION
General specification
Hydraulic system
The hydraulic system is supplied by 3 pumps, a main double pump, an independent pump for swinging and double
gear pump for steering and brake, pilot hydraulic system and grab rotation. The engine and the pumps are monitored
and controlled by the “Engine Speed Control” selector located in cab.
Circuit pressure
Attachment (2-piece boom)
340 bar
(
4930.0 psi
)
Travel
370 bar
(
5365 psi
)
Power boost
370 bar
(
5365 psi
)
Rotation
360 bar
(
5220.0 psi
)
Pilot system
45 bar
(
653 psi
)
Pumps
Variable-flow rate twin pump
Model
A8V080 LA1H2/63R1
Power
79 kW
(
107.4 Hp
)
Engine speed
2000 RPM
Maximum flow rate at
1750 RPM
(heavy)
2 x
140 l/min
(
37.0 US gpm
)
Pump volume
2 x
80 cm³
(
4.9 in³
)
Rotation pump
Model
A4VG40 DE4D T1/32R
Service pressure
360 - 10 bar
(
5220.0 - 145.0 psi
)
Engine speed
1800 RPM
Auxiliary pump volume
8.6 cm³
(
0.52 in³
)
Main pump volume
40 cm³
(
2.44 in³
)
Maximum flow rate at
1750 RPM
(heavy)
70 l/min
(
18.5 US gpm
)
Gear pump
Model
WSP20.11,2-03S1-L
Pump
P1
displacement
11.891 cm³/rev
(
0.73 in³/rev
)
Pump
P2
displacement
11.891 cm³/rev
(
0.73 in³/rev
)
Max continuous pressure (
P1
)
210 bar
(
3045 psi
)
Max intermittent pressure (
P2
)
230 bar
(
3335 psi
)
Min rotation speed (
P1
)
800 RPM
Max rotation speed (
P1
)
2300 RPM
Cylinder
Cylinder (Ø tube assy. x Ø rod assy. x stroke)
Monoboom lifting cylinder
110 mm
(
4.3 in
) x
70 mm
(
2.8 in
) x
1028 mm
(
40.5 in
) ±
1.8 mm
(
0.1 in
)
2-piece boom lifting cylinder
100 mm
(
3.9 in
) x
70 mm
(
2.8 in
) x
972 mm
(
38.3 in
) ±
1.8 mm
(
0.1 in
)
Dipper cylinder
115 mm
(
4.53 in
) x
80 mm
(
3.15 in
) x
1120 mm
(
44.1
in
) ±
1.8 mm
(
0.1 in
)
Bucket cylinder
95 mm
(
3.7 in
) x
65 mm
(
2.6 in
) x
903 mm
(
35.6 in
) ±
1.8 mm
(
0.1 in
)
Positioning cylinder for 2PB
135 mm
(
5.3 in
)
75 mm
(
3.0 in
) x
645 mm
(
25.4 in
)
47500167A 31/01/2013
35
