Backhoe attachment, Digging envelope, Digging forces – Liebherr R 944 C Litronic Demolition User Manual
Page 4: Buckets, Operating weight and ground pressure
4
R 944 C Litronic Demolition Attachment
Backhoe Attachment
with Main Boom 4,30 m
For backhoe application, following
items are required
Main boom 4,30 m
Stick 2,10 m
Stick 2,60 m
Stick 3,30 m
Storage racks for backhoe attachment
Optional
Hydraulic lines AHS * for main boom 4,30 m
Hydraulic lines AHS * for stick 2,10 m
Hydraulic lines AHS * for stick 2,60 m
Hydraulic lines AHS * for stick 3,30 m
Hydraulic lines rotary drive for main boom 4,30 m
Hydraulic lines rotary drive for stick 2,10 m
Hydraulic lines rotary drive for stick 2,60 m
Hydraulic lines rotary drive for stick 3,30 m
Backhoe bucket – as required
* AHS = hydraulic control for hydraulic accessory
Digging Envelope
Main Boom
pinned in upper (in lower) bearing
1
2
3
Stick
lengths
m 2,10 2,60 3,30
Max. digging depth
m 4,30 ( 5,75) 4,80 ( 6,25) 5,50 ( 6,95)
Max. reach at ground level
m 11,50 (10,90) 12,00 (11,40) 12,70 (12,05)
Max. dump height
m 9,25 ( 7,30) 9,60 ( 7,50) 10,15 ( 7,80)
Max. teeth height
m 13,10 (10,85) 13,50 (11,10) 14,00 (11,40)
Digging Forces
with Quick Change Adapter
1
2
3
Digging
force
ISO
kN 211 187 161
t 21,5 19,1 16,4
Breakout
force
ISO
kN 206 206 206
t 21,0 21,0 21,0
without Quick Change Adapter
Digging
force
ISO
kN 224 197 168
t 22,8 20,1 17,1
Breakout
force
ISO
kN 236 236 236
t 24,1 24,1 24,1
Max. breakout force with ripper bucket
without quick change adapter
300 kN (30,6 t)
Buckets
without Quick Change Adapter
with Quick Change Adapter
Cutting
width
mm
1200 1350 1500 1650 1650 1800
1050 1200 1350 1500 1650 1650
Capacity ISO 7451
m
3
1,25 1,50 1,75 2,00 2,25 2,50
1,00 1,25 1,50 1,75 2,00 2,25
HD-SL t/m
3
1,8 1,8 1,8 1,5 1,2 – 1,8 1,8 1,8 1,5 1,2 –
Max. possible material weight
S-HD
t/m
3
1,8 1,8 1,8 1,8 1,8 1,5
1,8 1,8 1,8 1,8 1,8 1,5
V/ VH-HD t/m
3
1,8 1,8 1,8 1,8 1,8 1,8
1,8 1,8 1,8 1,8 1,8 1,8
Weight of STD bucket with Liebherr teeth Z 20
kg –
1460
1540
1670
1780
1850 –
1330
1410
1490
1620
1730
Weight of HD bucket with Liebherr teeth Z 20
1)
kg
1450 1560 1630 1790 1900 – 1300 1390 1500 1570 1730 –
Max. stick length for machine stability per ISO 10567:
HD-SL-Undercarriage
m
3,30 2,60 2,10 2,10 2,10 – 3,30 2,60 2,10 2,10 2,10 –
S-HD-Undercarriage
m
3,30 3,30 3,30 2,60 2,10 2,10
3,30 3,30 3,30 2,60 2,10 2,10
V-Undercarriage
m
3,30 3,30 3,30 3,30 2,60 2,10
3,30 3,30 3,30 3,30 2,60 2,10
VH-HD-Undercarriage
m
3,30 3,30 3,30 3,30 3,30 2,60
3,30 3,30 3,30 3,30 3,30 2,60
1)
For applications over surface class 6, according to VOB, part C, DIN 18300
Operating Weight
and Ground Pressure
Operating weight includes basic machine with main boom 4,30 m, stick 2,60 m,
quick change adapter 66 and backhoe bucket 1,25 m
3
.
Undercarriage
HD-SL S-HD
V
VH-HD
Pad
width
mm
600 600 600 600
Weight
kg 44900 48400 51400 55100
Ground pressure
kg/cm
2
0,87 0,85 0,90 0,98
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