Deep foundation
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India (en)

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 45 or LRB 355 carrier machine.

    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.

    Rotary drilling tools for Kelly drilling

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    Wear parts for drilling tools

    PDF (4.8 MB)
    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.
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    Our new brochure “Solutions for Deep Foundation Work” contains details of machines, tools and applications.

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

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

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