Backhoe bucket, With mono boom 7.20 m, Digging envelope – Liebherr R 976 User Manual
Page 8: Operating weight and ground pressure, Buckets
8
R 976 Litronic
Backhoe Bucket
with Mono Boom 7.20 m
0 m
1
0
-1
-3
-2
-4
-5
-6
-7
-8
-9
-10
11
10
9
14
13
12
8
7
6
5
4
3
2
1
0
-5
-10
-15
-20
-25
-30
35
30
45
m
R0014
ft
40
25
20
15
10
5
2
3
4
5
5
10
15
20
25
30
35
40
45
50
6
7
8
9
10
11
12
13
14
15
0 ft
1
2
3
4
Digging Envelope
1
2
3
4
Stick length
m 2.90
3.30
3.80
4.70
Max. digging depth
m 7.60
8.00
8.50
9.40
Max. reach at ground level
m 12.35 12.75 13.20 14.10
Max. dump height
m 8.10
8.35
8.60
9.05
Max. teeth height
m 12.45 12.70 12.95 13.40
Digging force ISO
kN
390
361
329
284
t 39.8
36.8
33.5
28.9
Breakout force ISO
kN
485
485
485
485
t 49.4
49.4
49.4
49.4
Operating Weight
and Ground Pressure
Operating weight includes basic machine with mono boom 7.20 m,
stick 2.90 m and bucket 5.20 m
3
(4,600 kg).
Undercarriage
HD
LC-V
Pad width
mm 500
600
750
500
600
750
Weight
kg 85,300 86,000 87,100 90,400 91,200 92,300
Ground pressure
kg/cm
2
1.65 1.38 1.12
1.62 1.36 1.10
Optional: heavy counterweight
(heavy counterweight increases the operating weight by 1,900 kg and
ground pressure by 0.04 kg/cm
2
)
* Indicated loads are based on ISO 10567 max. stick length, lifted 360° on firm
1)
Standard bucket with Liebherr teeth Z 90
2)
HD bucket with Liebherr teeth Z 90
3)
HDV bucket with Liebherr teeth Z 90
Other backhoes available on request
Max. material weight
X
= ≤ 2.2 t/m
3
,
Y
= ≤ 1.8 t/m
3
,
V
= ≤ 1.5 t/m
3
,
y
= ≤ 1.2 t/m
3
,
v
= not authorized
Buckets
Machine stability per ISO 10567* (75 % of tipping capacity)
Cutting
width
Capacity
ISO 7451
Weight
HD-Undercarriage
Stick length (m)
LC-V-Undercarriage
Stick length (m)
2.90
3.30
3.80
4.70
2.90
3.30
3.80
4.70
mm
m
3
kg
STD
1)
1,800 3.80 4,000
X
X
X
Y
X
X
X
Y
1,950 4.30 4,200
X
X
X
Y
X
X
X
Y
2,150 4.80 4,450
X
X
Y
V
X
X
Y
V
2,300 5.20 4,600
Y
Y
Y
y
X
X
Y
y
2,300 5.80 4,800
Y
Y
V
y
Y
Y
V
y
2,600 6.60 5,100
V
V
y
v
V
V
y
v
HD
2)
1,800 3.60 4,400
X
X
X
Y
X
X
X
Y
1,950 4.10 4,750
X
X
X
V
X
X
X
Y
2,150 4.60 5,050
X
X
Y
V
X
X
Y
V
2,300 5.20 5,400
Y
Y
V
y
Y
Y
Y
y
2,300 5.60 5,550
Y
V
V
y
Y
Y
V
y
2,400 6.20 5,900
V
V
y
v
V
V
y
v
HDV
3)
1,950 4.20 5,250
X
X
X
v
X
X
X
v
2,150 4.70 5,550
Y
Y
Y
v
X
X
Y
v
2,300 5.20 5,850
Y
Y
V
v
Y
Y
V
v
2,300 5.70 6,400
V
V
y
v
V
V
y
v