BAT 300 Rotary drive (BAT series)
Thanks to the short and lightweight design, the rotary drive is extremely efficient as well as user-friendly in terms of transportation and maintenance.
The rotary drive is completely integrated in the control system of the Liebherr carrier machines. This provides optimum control comfort.
Exchangeable drive adapters allow for the use of various Kelly bars.
These cardan joints can be exchanged to suit the size of the casing driver.
The standard Kelly shock absorber with springs and hydraulic dampers protects the material and reduces noise emission.
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.
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.
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.
For dry mixing a binding agent is introduced into the ground as powder. more
For wet mixing a self-hardening suspension is introduced into the ground. 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
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
The loosened soil material is continuously conveyed to the surface using a continuous auger, the so-called continuous flight auger. more
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
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