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LRB 23

LRB 23
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LRB 23

Product catalog summary
Concept and Characteristics
The LRB 23 is a versatile and robust machine designed for multiple drilling applications, including full displacement, continuous flight auger, double rotary, and Kelly drilling, as well as soil mixing. It is equipped with advanced assistance systems such as cruise control, joystick control, automatic shake-off, and Kelly visualization to enhance operational efficiency and safety.
Technical Data
The LRB 23 is powered by a Liebherr D 976 A7-04 diesel engine, delivering 600 kW at 1700 rpm. It features a Kelly winch with a line pull of 230 kN and an auxiliary winch with a line pull of 50 kN. The hydraulic system can handle a maximum working pressure of 400 bar.
Performance Data
In full displacement drilling, the machine provides a rotary drive torque of 300 kNm and can achieve a maximum drilling depth of 32.2 meters with a 10 m Kelly extension. For continuous flight auger drilling, it supports a maximum drilling diameter of 1200 mm. The double rotary drilling system offers a torque of up to 240 kNm.
Operating Weight and Dimensions
The operating weight of the LRB 23 varies with configuration, reaching up to 78.5 tons with 800 mm grousers and an 18-ton counterweight. Its dimensions are optimized for stability and performance.
Additional Features
The machine includes features like ground pressure and Kelly visualization for enhanced safety and efficiency. It is equipped with a GPS/GLONASS positioning system for precise operations.
Customer Benefits
The LRB 23 offers significant benefits through its modular design, ease of setup, and integration with digital solutions like LIPOS® for positioning and process data recording, ensuring high availability, flexibility, and reduced maintenance.
Introduction to Liebherr
Liebherr is known for high-quality products that maximize customer benefits in practical applications. The company focuses on state-of-the-art technology and maintains top quality by developing and manufacturing key modules and components in-house, including drive and control technology for construction equipment.
Company Background
Founded in 1949 by Hans Liebherr, the family-owned company has grown into a global group with over 130 companies and nearly 44,000 employees worldwide. The corporate headquarters is in Bulle, Switzerland.
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Catalog excerpts

LRB 23-2

Ground Pressure Visualization Radio remote control Concrete pump The robust universal machine for a wide variety of applications: • Full displacement drilling • Continuous flight auger drilling • Double rotary drilling • Kelly drilling • Soil mixing • Vibrator slim design • Hydraulic hammer Assistance systems: • Cruise Control for all main functions • Joystick control for all machine functions • Automatic shake-off function for working tools • Kelly Visualization • Ground Pressure Visualization • Radio remote control for concrete pump • Drilling assistant (single-pass process) • Leader inclination...

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LRB 23-3

fill| Winches Kelly winch Line pull effective 230 kN (2nd layer) Rope speed 0-85 m/min Auxiliary winch Line pull effective 50 kN (3rd layer) Swing range left 180°, right 90° Radius adjustment device 2045 mm Rope speed 0-87 m/min t fmk Crowd system Crowd system Crowd winch Crowd force 320/ 320 kN (push / pull) Line pull effective 160 kN Rope speed 0-88 m/min Diesel engine Power rating according to 600 kW (804 hp) at 1700 rpm ISO 9249 Engine type Liebherr D 976 A7-04 Fuel tank capacity 800 l with continuous level indicator and reserve warning Exhaust emission EU 2016/1628 Stage V EPA/CARB Tier...

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LRB 23-4

(15 t) (18 t) (18 t incl. rear support unit) Operating weight Total weight with 700 mm 3-web grousers t 72.6 Total weight with 800 mm 3-web grousers t 73.0 The operating weight includes the basic machine LRB 23 (ready for operation - incl. 20 % filling of diesel tank) with Kelly equipment and 15 t counterweight, without attachment. Operating weight Total weight with 700 mm 3-web grousers t The operating weight includes the basic machine LRB 23 (ready for operation - incl 20 % filling of diesel tank) and 15 t counterweight, without attachment and Kelly equipment.

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LRB 23-5

Operating weight Total weight with 700 mm 3-web grousers t 78.1 Total weight with 800 mm 3-web grousers t 78.5 The operating weight includes the basic machine LRB 23 (ready for operation – incl. 20 % filling of diesel tank) with Kelly equipment and 18 t counterweight, without attachment.

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LRB 23-6

Operating weight includes the basic machine LRB 23 (ready for operation - including 20 % filling of diesel t tank) with Kelly equipment, without counterweight and attachment * transport width with 700 mm grousers Basic machine without counterweight and without adapter for casing oscillator t^39.1 Leader with Kelly equipment t Options Adapter for casing oscillator t

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LRB 23-7

Rear counterweight Weight Intermediate counterweight Weight Rear counterweight tj5.0 Weight -1540 Rear counterweight with rear support unit Weight tj8.0 BAT 300 Weight tj6.5

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LRB 23-8

Full displacement drilling BAT 300 V- T A Performance data Rotary drive - torque kNm Above drilling depths are valid for the use of standard tools and for the X value of 530 mm shown in the illustration. * Other drilling diameters on request ** With 10 m Kelly extension

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LRB 23-9

Performance data Rotary drive - torque kNm Above drilling depths take into account that an auger cleaner is used and the cardan joint has been removed. Above drilling depths are valid for the use of standard tools and for the X value of 340 mm shown in the illustration. * Other drilling diameters on request ** With 10 m Kelly extension

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LRB 23-10

Performance data Rotary drive I - torque kNm Above drilling depths are valid for the use of standard tools and for the X value of 520 mm shown in the illustration. Due to differences in the max. admissible load capacities, the combinations of drilling depth and drilling diameter may be limited. * Other drilling diameters on request ** When using a protective hose, the maximum drilling depth has to be reduced by 875 mm

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LRB 23-11

Performance data Kelly bars Rotary drive - torque kNm Other drilling diameters available on request. When using a casing oscillator, value X must be reduced by 1500 mm. * Depends on the design of the casing driver * Installation only possible with assist crane

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LRB 23-12

Above mixing depth is valid for the use of standard tools and for an X value of 705 mm (see above illustration). * If the mixing diameter is 1900 mm or more the mixing paddle is always located below the leader. Other drilling diameters available on request '* With 10 m Kelly extension

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LRB 23-13

Performance data Static moment kgm Above pile length is valid for an X value of 500 mm (see above illustration).

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LRB 23-14

* existing Kelly winch with limitation

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LRB 23-15

Drive motors Kelly shock absorber Gearbox Cardan joint Kelly shock absorber: • Newly developed Kelly shock absorber for highest demands • Possibility of adjusting the strength of the Kelly shock absorber for different Kelly bar weights Highest availability through easy set-up: • No mechanical shift gearbox • Low maintenance requirements Automatic gearbox for best operating comfort: • No stopping required to change gears • No interruption of the drilling process • Continuous optimization of speed Flexibility through modular design: • Exchangeable cardan joint for other casing drivers • Exchangeable...

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LRB 23-16

Ground Pressure Visualization 2 Features: • The actual ground pressure is calculated in real time • The maximum admissible ground pressure can be individually predefined • The utilization is continuously calculated and displayed on the monitor in the operator’s cab • Audible and visual warnings when the predefined values are approached Your benefits: • Increased safety on the jobsite due to consideration of prevailing ground conditions • Higher operator comfort thanks to clearly displayed information and warning signals • Prevention of critical or stressful situations before they occur • User-friendly...

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LRB 23-17

LIPOS® Liebherr Positioning System GPS / GLONASS Process Data Recording LiDAT® Data Transmission Process Data Reporting Reference station Using factory-mounted components, Liebherr’s positioning system LIPOS® allows for the direct integration of a Trimble or Leica machine control system into its process data recording and reporting systems. The positioning systems from Trimble or Leica for piling and drilling rigs are based on state-of-theart Differential Global Navigation Satellite Systems (DGNSS) technology and so create the ideal conditions for a precise and efficient positioning of Liebherr...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.