Liebherr LB 28 - Manual (Page 11)

LB 28 11
10 54 3
700
1000
1600
1900
2200
0
20
40
60
80
100
Nm %
-5.56 m
1.23 m/min
KELLY
188.2 kN
-24.25 m
0.00 m/min
200 kN
-63.9 kN
° 0.1
° 0.0
0
100
200
300
400
bar
0 100 200 300 400
bar
0 200 300 400
bar
2 15
83 mm/U m -24.3
100 0
100
200
300
1300
2
MODE
:
rpm
A
6.2 ft
X
Display for Kelly drilling
Performance data
Max. drilling diameter* 6.2 ft uncased
Max. drilling diameter* 4.9 ft cased
Kelly bars
A X
Drilling
depth
Weight Kelly Ø
(ft) (ft) (ft) (lbs) (inch)
MD 28/3/24 32.4 8.9 72.2 11,025 16.5
MD 28/3/27 35.7 5.6 82.0 12,125 16.5
*) Other drilling diameters available on request
Other Kelly bars available on request
When using a casing oscillator, value X has to be reduced
by 4.9 ft.
Technical data
Rotary drive - torque 236,020 lbf-ft
Rotary drive - speed 46 rpm
Kelly drilling
LB 28 Low Head