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Double rotary drilling, Model dba 300, Technical data – Liebherr LRB 255 User Manual

Page 10: Performance data

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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