Double rotary drilling, Model dba 300, Technical data – Liebherr LRB 255 User Manual
Page 10: Performance data
10
LRB 255
Double rotary drilling
Model DBA 300
Hydraulic casing guide
Display for double rotary drilling
Technical data
Drilling drive I – torque
300 kNm
Drilling drive I – speed
26 rpm
Drilling drive II – torque
150 kNm
Drilling drive II – speed
31 rpm
*) Other drilling diameters and drilling depths available on request
Performance data
Max. drilling diameter*
900 mm
Max. drilling depth*
18.5 m
Max. pull force (crowd winch and Kelly winch)
850 kN
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