Backhoe attachment, Digging envelope, Digging forces – Liebherr R 934 C Litronic Demolition User Manual
Page 4: Operating weight and ground pressure, Buckets
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4
R 934 C Litronic Demolition Attachment
Backhoe Attachment
with Main Boom 4.25 m
For backhoe application, following
items are required
Main boom 4.25 m
Stick 2.00 m, 2.50 m, 3.10 m, 3.90 m
Storage racks for backhoe attachment
Optional
Hydraulic lines AHS * for main boom 4.25 m
Hydraulic lines AHS * for stick 2.00 m, 2.50 m, 3.10 m, 3.90 m
Hydraulic lines rotary drive for main boom 4.25 m
Hydraulic lines rotary drive for stick 2.00 m, 2.50 m, 3.10 m, 3.90 m
Backhoe bucket – as required
* AHS = hydraulic control for hydraulic accessory
Digging Envelope
Main Boom
pinned in upper (in lower) bearing
1
2
3
4
Stick lengths
m
2.00
2.50
3.10
3.90
Max. digging depth
m
3.28 ( 4.82) 3.65 ( 5.19) 4.25 ( 5.79) 5.05 ( 6.59)
Max. reach at ground level
m 10.75 (10.23) 11.10 (10.55) 11.69 (11.11) 12.47 (11.87)
Max. dump height
m
8.47 ( 6.52) 8.99 ( 6.90) 9.44 ( 7.12) 10.04 ( 7.42)
Max. teeth height
m 12.23 (10.08) 12.47 (10.27) 12.91 (10.52) 13.49 (10.84)
Digging Forces
with Quick Change Adapter
1
2
3
4
Digging force ISO
kN
161
137
119
102
t
16.4
13.9
12.1
10.4
Breakout force ISO
kN
187
155
155
155
t
19.1
15.8
15.8
15.8
without Quick Change Adapter
Digging force ISO
kN
170
146
126
106
t
17.3
14.9
12.8
10.8
Breakout force ISO
kN
213
184
184
184
t
22.1
18.8
18.8
18.8
Max. breakout force with ripper bucket
264 kN (27.9 t)
Operating Weight
and Ground Pressure
Operating weight includes basic machine with heavy duty counterweight 7.5 t (6.5 t for the
VH-HD-Undercarriage), the cab tiltable 30°, main boom 4.25 m, stick 2.50 m, quick change
adapter 66 and backhoe bucket 1.00 m
3
(960 kg).
Undercarriage
NLC
LC
VH-HD
Pad width
mm
600
750
600
750
600
Weight
kg 38,800
39,750
38,900
39,850
45,000
Ground pressure
kg/cm
2
0.75
0.61
0.75
0.61
0.85
Buckets
Machine stability per ISO 10567* (75 % of tipping capacity)
NLC-Undercarriage
LC-Undercarriage
VH-HD-Undercarriage
Stick length (m)
Stick length (m)
Stick length (m)
2.00
2.50
3.10
3.90
2.00
2.50
3.10
3.90
2.00
2.50
3.10
3.90
mm
m
3
kg
1,250
1)
1.25
1,070
1,400
1)
1.45
1,140
1,550
1)
1.60
1,210
1,250
2)
1.25
1,090
1,400
2)
1.45
1,160
1,550
2)
1.60
1,230
1,200
1) 3)
1.25
1,280
1,350
1) 3)
1.50
1,370
1,500
1) 3)
1.75
1,460
1,650
1) 3)
2.00
1,580
1,200
2) 3)
1.25
1,240
1,350
2) 3)
1.50
1,330
1,500
2) 3)
1.75
1,420
1,650
2) 3)
2.00
1,540
* Indicated loads are based on ISO 10567 max. stick length, lifted 360° on firm
1)
Bucket without quick change adapter with teeth Z 50
2)
Bucket with quick change adapter with teeth Z 50
3)
Bucket R 944 C
litronic
`
with teeth Z 50
Other backhoes available on request
Max. material weight
Y
= ≤ 1.8 t/m
3
,
V
= ≤ 1.5 t/m
3
,
y
= ≤ 1.2 t/m
3
,
v
= not authorized
Cutting
width
Capacity
ISO 7451
Weight
0 m
2
4
6
8
10
0 ft
10
20
30
0
2
4
6
8
0
10
20
30
12
14
5
15
25
35
45 40
10
5
15
25
35
45
-10
12
14
-6
-4
-2
40
-15
-20
-5
m
ft
3
4
2
1
0 m
2
4
6
8
10
0 ft
10
20
30
0
2
4
6
8
0
10
20
30
12
14
5
15
25
35
45 40
10
5
15
25
35
-10
-6
-4
-2
-15
-20
-5
m
ft
3
4
2
1