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LiebherrDeep foundation
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Deep FoundationAttachmentsBAT 350

The powerful rotary drive delivers the required torque for common drilling applications such as Kelly, continuous flight auger or full displacement drilling. Considerable advantages are the automatic torque regulation as well as four electronically adjustable speed ranges. The rotary drive is powered by the on-board hydraulics of the LB 35 carrier machine.

metricimperial

  • Torque - 347 kNm

  • Speed - 46 U/min

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Automatic gearbox
Four electronically adjustable speed ranges and automatic torque regulation allow for perfect adaption to the prevailing soil conditions. The drilling process is not interrupted through changing speed.
Rotary drive with selective Kelly shock absorber
The latest version of the rotary drive has a newly developed Kelly shock absorber, which allows the damping strength to be adapted depending on the respective weight of the Kelly bar.
Exchangeable cardan joints
These cardan joints can be exchanged to suit the size of the casing driver.
Exchangeable drive adapters
Exchangeable drive adapters allow for the use of various Kelly bars.
Integrated control system
The rotary drive is completely integrated in the control system of the Liebherr carrier machines. This provides optimum control comfort.
Easy transport and maintenance
Thanks to the short and lightweight design, the rotary drive is extremely efficient as well as user-friendly in terms of transportation and maintenance.
Torque
347 kNm
Speed
46 U/min

Rotary drilling tools for Kelly drilling

Wear parts for drilling tools

Automatic casing drive adapter
The automatic casing drive adapter with remote control for locking and unlocking the casing pipe offers significant advantages in terms of safety as no personnel is exposed to the hazardous area. In addition faster production cycles can be achieved.
Casing oscillators
If required, Liebherr piling and rotary drilling rigs can be equipped with a number of casing oscillators which are operated via the machine’s on-board hydraulics. No external power pack is required which leads to significant cost savings.
Kelly drilling
Kelly drilling belongs to the most common dry rotary drilling methods. Soil and rock material is conveyed to the surface discontinuously with relatively short rotary drilling tools.
Continuous flight auger drilling
The loosened soil material is continuously conveyed to the surface using a continuous auger, the so-called continuous flight auger.
Full displacement drilling
Full displacement drilling is a modification of continuous flight auger drilling. The drilling tool used is a smooth pipe with an auger-type starter piece.
Wet soil mixing
For wet mixing a self-hardening suspension is introduced into the ground.
Down-the-hole drilling
For down-the-hole drilling a hammer is mounted on the lower end of a drill rod. The hammer is activated by adding compressed air.

  • Operating weight - 95.2 - 111.5 t

  • Max. torque - 347 kNm

  • Kelly drilling, max. drilling depth - 77.5 m

  • Kelly drilling, max. drilling diameter - 4,100 mm

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Drilling tools

Drilling tools vary depending on the drilling diameter, drilling depth and the ground conditions.

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Foundation methods

Deep foundation machines from Liebherr can be applied for all common drilling methods, for slurry wall installation and soil improvement.

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