Liebherr unveiled the LRB 355 piling and drilling rig to the public during its recent customer days in Nenzing, Austria.
The new LRB 355 has been especially designed for drilling with full displacement tool. The rig can, however, be used for a great number of different applications, including drilling with kelly equipment, double rotary head and continuous flight auger, or soil mixing, as well as piling jobs with vibrator and hydraulic hammer.
The concept of the undercarriage, basic machine and kinematics of the LRB 355 orientates itself on the design of Liebherr's series of pure drilling rigs. According to the company, the robust undercarriage of the rig, with the longest tracks in its class, guarantees a high level of stability. Due to the parallel kinematics the piling and drilling rig has a large operating area.
The direct mounting of all winches on the leader allows for a direct view from the operator's cab to the main winch and ensures that the ropes do not move during leader adjustment.
The LRB 355 is available in two different configurations with a maximum height of 33.5m and a maximum weight of approximately 100t without attachments. The rig is driven by a V12 diesel engine offering 600kW and complying with the European emission standards and the US Tier 4 final. The engine power can be upgraded to 750kW, and the engine runs at a reduced operating speed of 1,700rpm.
A new attachment is the BAT rotary drive, which offers a torque of 450kNm and can be individually set up depending on the application.
GeoDrilling International witnessed the unveiling of the new machine at Liebherr's factory. A full report on the customer day can be read in GDI's June issue.
