Origin: Germany – Switzerland
Manufacturing Year: 2011
Fabrication: Liebherr Group
One of the typical rigs in multi-tasking drilling comes from heavy machinery designer Liebherr. The model has been widely used in 60 different countries around the world as well as being the spearhead device that DUAFAT Group has trusted in its works.
Liebherr LB28 is one of the most popular specialized drilling equipment systems in the world. With durability, reasonable cost and relatively easy operation under different operating environment conditions.
Main basic diameters
|Operating weight||218.919 lbs|
|Max. Torque||236,019 lbf-ft|
|Maximum push/pull force||89,923 lbf|
|Max Drilling||229.7 ft|
|Max Drilling Diameters||8.2 ft|
|Drill Technique||Khoan xoay|
|Drilling diameter achieved||600 mm, 750 mm, 1,000 mm, 2,300 mm (24 in)|
|Drilling Depth||17.3 m/s², 25.8 m/s², 70 m/s² (56.8 ft/s²)|
|Max Kelly Drilling Depth||70m|
|Max Kelly drilling diameters||2,300mm|
|Max Main winch||480kN|
|Max rotary line in optional winch||300kNm|
|Max removeable drilling||25.8m|
|Max removeable drilling diameter||600mm|
Liebherr LB28 is designed simply as a rotating rig. All conventional drilling methods can be done with LB28, such as: Kelly drilling, continuous aircraft drilling, drilling with partial or total displacement instruments, double rotation drilling and soil mixing. In addition, the LB 28-320 has a powerful lead that can easily handle high torque and large traction of the wiring system.
This is to ensure a very fast operating cycle. Under conditions of a construction site of limited elevation, such as under bridges or below power lines, the rig can be equipped with a shortened ‘low end’ head.
Some of the images come from the field construction site of Duafat Group with Liebherr LB28: