BAT 450.1 Rotary drive (BAT series)
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.
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. more
These cardan joints can be exchanged to suit the size of the casing driver.
Exchangeable drive adapters allow for the use of various Kelly bars.
The rotary drive is completely integrated in the control system of the Liebherr carrier machines. This provides optimum control comfort.
Thanks to the short and lightweight design, the rotary drive is extremely efficient as well as user-friendly in terms of transportation and maintenance.
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. more
The loosened soil material is continuously conveyed to the surface using a continuous auger, the so-called continuous flight auger. more
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. more
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. more
For wet mixing a self-hardening suspension is introduced into the ground. more
For dry mixing a binding agent is introduced into the ground as powder. more
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