BAT 250 Rotary drive (BAT series)

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 carrier machine. Designed for continuous operation, the rotary drive enables especially fast drilling cycles.
Gallery loading.
Torque 252 kNm
Speed 58 U/min


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Automatic gearbox

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.

Kelly shock absorber

Kelly shock absorber

The standard Kelly shock absorber with springs and hydraulic dampers protects the material and reduces noise emission.

Exchangeable cardan joints

Exchangeable cardan joints

These cardan joints can be exchanged to suit the size of the casing driver.

Exchangeable drive adapters

Exchangeable drive adapters

Exchangeable drive adapters allow for the use of various Kelly bars.

Integrated control system

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

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 252 kNm
Speed 58 U/min
Automatic casing drive adapter

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

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

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

Continuous flight auger drilling

Continuous flight auger drilling

The loosened soil material is continuously conveyed to the surface using a continuous auger, the so-called continuous flight auger. more

Full displacement drilling

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. more

Wet soil mixing

Wet soil mixing

For wet mixing a self-hardening suspension is introduced into the ground. more

Down-the-hole drilling

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. more

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Our new brochure “Solutions for Deep Foundation Work” contains details of machines, tools and applications. Solutions for Deep Foundation Work

Drilling tools

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

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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. Methods and applications

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