Technical data LB 24

Drilling rig

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 Concept and characteristics

Kelly rope Leader top for Kelly rope

Tensioning cylinder for

Leader top for auxiliary rope crowd system

Rotary

Kelly bar

Inclination device

Casing driver

Auxiliary winch

Radius adjustment device

Crowd winch

Casing oscillator
Kelly winch

Undercarriage Uppercarriage

• High engine output with automatic engine speed • Automatic vertical alignment
control
• High alignment forces
• Controlled entirely from cab
• Simultaneous control of several movements via
• Sturdy and solid rig design Load-sensing multi-circuit hydraulics
• Solid parallel kinematics on the basic machine • Quick assembly of rotary possible through
quick connection
• High pull and push forces
• Equipment design according to latest European
• High torque
regulations and standards
• Completely self-rigging (no auxiliary machines
• All components designed to fulfill the special
required)
requirements of a drilling rig
• Large range of working tools (all common
• High manufacturing quality through quality control
drilling works can be performed)
by PDE-system
• Stepless leader inclination 5° forward - 15° backward
depending on type of equipment

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 Transport dimensions and weights

21845 3000

3400
300
1120

800
6790 5630 9425 3390

Transport with leader Dimensions and weights

includes the basic machine (ready for operation) with leader, Leader length 19.41 m
without working tools (such as rotary, Kelly bar etc.) and without
counterweight. Weight complete without counterweight 54.1 t

21845 2470
2585 8070

2375
Transport leader Dimensions and weights
includes the leader without working tools (such as rotary, Leader length 19.41 m
Kelly bar etc.). Weight complete 18.7 t
Lower part of the leader 1.2 t
Upper part of the leader with leader top 3.0 t

Ballast I
7180 3000
2070

530
1120

1565
3400
300

1808

3000
800
5630 3390
1810

Transport basic machine Counterweight Rotary

ready for operation, without counterweight. Weight 10.2 t Transport weight
Transport weight 35.4 t BA 240 6.2 t

Weights can vary with the final configuration of the machine.

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 Dimensions
Basic machine LB 24

5° 15° 8° 8°

22845

578

1100
3650 800
4900 3580 4400

R
37
5630 00

Technical data Operating weight

Total height 22.85 m Total weight with 700 mm 3–web shoes 75.0 t
with 800 mm 3–web shoes 75.5 t
Max. pull, leader on ground 320 kN
with 900 mm 3–web shoes 76.0 t
Max. torque 240 kNm
The operating weight includes the basic machine (with rotary and
Stepless leader inclination
Kelly bar MD 28/3/24) and 10.2 t counterweight.
Lateral inclination ± 8°
Forward inclination 5°
Backward inclination 15°

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 Technical description

Engine Control
Power rating according to ISO 9249, 270 kW (362 hp) at 2000 rpm The control system - developed and manufactured by Liebherr - is
Engine type Liebherr D 936 L A6 designed to withstand extreme temperatures and the many heavy-
Fuel tank 700 l capacity with continuous level duty construction tasks for which this machine has been designed.
    indicator and reserve warning Complete machine operating data are displayed on a high resolution
Engine complies with NRMM exhaust certification EPA/CARB Tier 3 monitor. A GSM modem allows for remote inquiry of machine data
and 97/68 EC Stage III A. and error indications. To ensure clarity of the information on display,
different levels of data are shown in enlarged lettering and symbols.
Control and monitoring of the sensors are also handled by this high
technology system. Error indications are automatically displayed on
the monitor in clear text. The machine is equipped with proportional
control for all movements, which can be carried out simultaneously.
Hydraulic system Two joysticks are required for operation. Pedal control can be
changed to hand control.
The main pumps are operated by a distributor gearbox. Axial piston Options:
displacement pumps work in open circuits supplying oil only when • PDE: Process data recording
needed (flow control on demand). The hydraulic pressure peaks are • GSM modem
absorbed by the integrated automatic pressure compensation, which
relieves the pump and saves fuel.

Pumps for working tools 2x 240 l/min

Separate pump for kinematics 137 l/min
Hydraulic oil tank 600 l Kelly winch with freewheeling
Max. working pressure 350 bar
Line pull (effective) 200 kN
The cleaning of the hydraulic oils occurs via an electronically Rope diameter 28 mm
monitored pressure and return filter. Any clogging is shown on the Line speed 0-78 m/min
monitor in the cab. The use of synthetic environmentally friendly oil is
also possible.

Auxiliary winch
Line pull (effective) 80 kN
Crawlers Rope diameter 20 mm
Line speed 0-74 m/min
Propulsion through axial piston motor, hydraulically released spring
loaded multi-disc brake, maintenance free crawler tracks, hydraulic
chain tensioning device.

Drive speed of telescopic undercarriage 0 – 1.1 km/h Rope crowd system

Track force 634 kN
Width of 3-web track shoes 800 mm Crowd force (push/pull) 320/320 kN
Transport width 3390 mm Line pull (effective) 160 kN
Rope diameter 24 mm
Option: Travel of working tool 16 m
Width of 3-web track shoes 700 mm Line speed 0-76 m/min
Transport width 3000 mm
Width of 3-web track shoes 900 mm The winches are noted for compact, easily mounted design.
Transport width 3490 mm Propulsion is via a maintenance-free planetary gearbox in oil bath.
Load support by the hydraulic system; additional safety factor by
a spring-loaded, multi-disc holding brake. All line pull values are
effective values. The efficiency factor of approx. 25% has already
been deducted.

Swing
Consists of triple-row roller bearing with external teeth and one
swing drive, fixed axial piston hydraulic motors, spring loaded and Noise emission
hydraulically released multi-disc holding brake, planetary gearbox and
pinion. Selector for 3 speed ranges to increase swing precision. Noise emissions correspond with 2000/14/EC directive on noise
Swing speed from 0 – 3.5 rpm is continuously variable. emission by equipment used outdoors.

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 Rotary BA 240 with shock absorber

Gearbox frame

Drive motors

Kelly bar

Shock absorber

Gearbox

Cardanic joint

Casing driver

• 2-stage-gear drive for flexible adaptation to soil conditions

BA 240
• Due to stepless speed control via joystick optimum and precise
300 alignment and rock drilling is possible even at low speed levels;
Gear 1
250 it is not required to preselect an operating mode
Gear 2
Torque [kNm]

200 • Kelly shock absorber and rubber bearing relieve the material and
150 reduce noise emission
100 • Thanks to the Kelly shock absorber the Kelly bar is guided
50 at greater length
0 • Various drive adapters provide compatibility with other systems
0 10 20 30 40 50 60 70
Speed [rpm]

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 Kelly drilling

1900

Display for Kelly drilling

Technical data Kelly bars

Drilling drive - torque 1 gear
st
242 kNm Drilling
Drilling drive - speed 1st gear 29 rpm A X Weight Kelly Ø
depth
Drilling drive - torque 2nd gear 121 kNm (mm) (mm) (m) (t) (mm)
Drilling drive - speed 2nd gear 58 rpm
MD 28/3/24 9880 8600 22.0 5.0 419
MD 28/3/27 10880 7600 25.0 5.45 419
MD 28/3/30 11880 6600 28.0 5.9 419
MD 28/3/33 12880 5600 31.0 6.35 419
Performance data
MD 28/4/36 11130 7350 34.0 7.0 419
Max. drilling diameter* 1900 mm uncased
Max. drilling diameter* 1500 mm cased MD 28/4/42 12630 5850 40.0 8.0 419

*) Other drilling diameters available on request. Other Kelly bars available on request.
When using a casing oscillator, value X has to be reduced
by 1500 mm.

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 Continuous flight auger drilling

Auger with auger guide

Display for continuous flight auger drilling

Technical data Performance data

Drilling drive - torque 1st gear 242 kNm Drilling depth with 6 m Kelly extension,
Drilling drive - speed 1st gear 29 rpm without auger cleaner 22 m
Drilling drive - torque 2nd gear 121 kNm Drilling depth without auger cleaner** 16 m
Drilling drive - speed 2nd gear 58 rpm
Drilling depth with auger cleaner** 14.5 m
Max. pull force (crowd winch and Kelly winch) 72 t
Max. push force (weight of rotary and auger to be added) 15 t

Max. drilling diameter* 1000 mm

*) Other drilling diameters available on request.

**) Without Kelly extension

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 Double rotary drilling
Model DBA 200

Display for double rotary drilling

Technical data
Drilling drive I - torque 1st gear 196 kNm
Drilling drive I - speed 1st gear 6 rpm
Drilling drive I - torque 2nd gear 98 kNm
Drilling drive I - speed 2nd gear 12 rpm
Drilling drive II - torque 1st gear 98 kNm
Drilling drive II - speed 1st gear 12 rpm
Drilling drive II - torque 2nd gear 49 kNm
Drilling drive II - speed 2nd gear 24 rpm
Max. drilling diameter* 620 mm
Max. drilling depth 16 m
Max. pull force 72 t

*) Other drilling diameters available on request.

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 Twin mix equipment
Model DMA 35

Display for soil mixing

Technical data
Drilling drive - torque 1st gear 35 kNm
Drilling drive - speed 1st gear 38 rpm
Drilling drive - torque 2st gear 17.5 kNm
Drilling drive - speed 2st gear 76 rpm
Max. drilling depth 16 m
Max. drilling diameter* 700 mm

*) Other diameters available on request.

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 PDE - Process data recording (Additional equipment)
This module constantly calculates and stores the current working processes.

Measurements PDE - diagram

Measurements are constantly calculated during the working
process. No special measuring process is required. External
systems can also be connected to the system.

Display of measurement data

Measurement data relevant to the working process is displayed on
the monitor in the cab.
The operator can then control the process and, if necessary, correct it.

Working process interruption

The working process and the measurement can be interrupted at
any time.
The measurements are automatically continued upon resumption of
work.

External sensors

Example of a protocol (in required language)

Storage of measurement and
machine data
All data is stored on a memory card. This can be read via a PC.
Thereby an evaluation and processing of data can also be
performed at a later time. For example, for:

• client certifications
• conveying daily production data, down time, etc.
• Soil condition report

Printing data
A protocol can be printed out from the cab printer after each
working process.

Data transmission
A GSM modem can be connected to the PDE making long distance
data transmission possible.

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 LB 24 – 10446696 – 03/2008 Subject to change without notice.

Liebherr-Werk Nenzing GmbH

P.O. Box 10, A-6710 Nenzing/Austria
Tel.: +43 50809 41-473
Fax: +43 50809 41-499
crawler.crane@liebherr.com
www.liebherr.com

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