Liebherr R 974 C Litronic Demolition - Manual (Page 5)

Backhoe Attachment
with Main Boom 5,00 m
R 974 C Litronic Demolition Attachment 5
For backhoe application, following
items are required
Main boom 5,00 m
Stick 2,90 m
Stick 3,80 m
Stick 4,70 m
Storage racks for backhoe attachment
Optional
Hydraulic lines AHS * for main boom 5,00 m
Hydraulic lines AHS * for stick 2,90 m
Hydraulic lines AHS * for stick 3,80 m
Hydraulic lines AHS * for stick 4,70 m
Hydraulic lines rotary drive for main boom 5,00 m
Hydraulic lines rotary drive for stick 2,90 m
Hydraulic lines rotary drive for stick 3,80 m
Hydraulic lines rotary drive for stick 4,70 m
Backhoe bucket – as required
* AHS = hydraulic control for hydraulic accessory
Digging Envelope
1 2 3
Stick lengths m 2,90 3,80 4,70
Max. digging depth m 6,40 7,30 8,20
Max. reach at ground level m 14,40 15,30 16,15
Max. dump height m 10,75 11,30 11,85
Max. teeth height m 15,00 15,60 16,20
Digging force kN 335 283 246
t 34,1 28,8 25,1
Breakout force kN 405 405 405
t 41,3 41,3 41,3
Backhoe Bucket
Cutting width mm 1750 1750 1900 1900 2100 2100 2250 2250 1900 2250
Capacity ISO 7451 m 3 3,60 3,80 4,10 4,30 4,60 4,80 5,20 5,80 4,30 4,60
Weight Standard bucket with teeth V 61 SD kg – 3750 – 3950 – 4250 4400 4600 – –
Weight HD bucket with teeth V 61 RYL kg 4300 – 4500 – 4850 – – – – –
Weight HD-V bucket with teeth V 69 SD kg – – – – – – – – 6100 6100
Suitable for material up to a specific weight of
with stick 2,90 m
t/m 3 – – – – 2,20 2,20 1,80 1,80 2,20 1,80
with stick 3,80 m t/m 3 2,20 2,20 2,20 2,20 1,80 1,80 1,50 1,50 1,80 1,50
with stick 4,70 m t/m 3 1,80 1,80 1,80 1,80 1,50 1,50 1,20 1,20 1,20 –
Operating Weight
and Ground Pressure
Operating weight includes basic machine with counterweight 16,0 t,
main boom 5,00 m, stick 2,90 m and backhoe bucket 5,20 m
3
(4400 kg).
Undercarriage HD-EW VH-HD
Pad width mm 750 750
Weight kg 109400 113800
Ground pressure kg/cm 2 1,32 1,38
0 2 4 6 8 10 12 14 16
0 10 20 30 40 50
50
40
30
20
10
-2
-4
16
14
12
10
8
6
4
2
m ft
0 0
1
3
2
-6
-8
-10
-20
-30
m
ft