The LB 36 large diameter rotary drilling rig is the largest model in Liebherr’s range of pure rotary drilling rigs.
The LB 36 large diameter rotary drilling rig is the largest model in Liebherr’s range of pure rotary drilling rigs. With what is known as the LB series, Liebherr now has a complement to the range of LRB combined piling and drilling rigs. The concept behind the LB series takes into account the tough demands now placed on modern rotary drilling rigs. The LB series rigs are designed for operations using Kelly equipment, continuous flight augers, double rotary heads and soil mixing equipment.
The LB 36 with additional package is intended for a maximum drilling diameter of up to 9.8 ft. (3 m) and drilling depths down to 229.66 ft. (70 m). The extended drilling axis measures 5.58 ft. (1.700 m). The standard drilling axis of 4.27 ft. (1.300 m) can nevertheless be quickly and easily achieved by changing the position of the leader top for the Kelly rope and disassembling the adapter of the rotary drive.
For the production of cased boreholes a casing oscillator for diameters of up to 8.2 ft. (2.5 m) can be operated. Drilling depths down to 279 ft. (85 m) are achievable when the LB 36 is equipped with a stronger 90 ft. lb. winch.
Basic machine and leader can be transported in one piece. This allows for quick and easy transportation of the rig as well as flexibility in job site assignment.
The heaviest load when basic machine and leader are transported separately is 72,752 lb. (33,000 kg). As a special feature a quick assembly system for the leader is provided in such cases where legal regulations restrict transportation.
The LB 36 and the LB 36 with extended drilling axis also are equipped with the Litronic control system, which is based on a CANBUS system of the latest generation. This control system not only includes programs for the application of the various drilling methods but also provides service and troubleshooting information in a clearly laid-out form. A modem for remote diagnosis as well as a process data recording system for documentation of the work carried out are available as plug-in modules.
Technical features of the LB 36 and the LB 36 with extended drilling axis are a robust leader design and load-resistant kinematic layout with generous system width. They give this large drilling rig higher stability and strength than other machines of similar size. For the user, this not only means greater performance potential but also reduced wear, so that the operating life of the machine is automatically prolonged, according to the manufacturer.
For more information, visit www.Liebherr.com.