Components for Tunnelling Machines
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A strong Partner for Tunnelling Applications Components for Tunnelling Machines

Components for Tunnelling Machines Liebherr is one of the world‘s leading manufacturers of components for construction machinery, maritime applications and other sophisticated fields. Components by Liebherr have been used in tunnelling projects around the world for several years now. Thereby we have more than 60 years of experience in the development, design and manufacture of these products. Since then, the factories in Biberach an der Riss, Germany, in Bulle, Switzerland and in Dalian, China, have been producing for worldwide use in the most diverse applications both within and outside...

Liebherr Components for Tunnelling Main Bearings • Three-row cylindrical roller bearings • Double-row tapered roller bearings Erector Bearings • Single-row four-point bearings • Cross-roller bearings Gearboxes • Modular construction • Different sizes • Integrated water cooling

Axial piston pumps • Open circuit • Various sizes and controls Electric Motors • KFE series squirrel cage motors • Compact design • Watercooled Components for Tunnelling Mach

Main and Erector Bearings for Tunnelling Machines Liebherr - Your Bearing Competence Partner Relying on our outstanding bearing know-how and advanced engineering methods our customers are used to receive detailed engineering support to identify the best solution according to specific project requirements. Our success factors are high engineering competence, reliable products as well as high production and service standards. All parameters combined are vital for a successful and long lasting partnership. Manufacturing Expertise Competence Partner Components for Tunnelling Machines

The main parts of a tunnel boring machine are a rotating cutting shield, followed by a main bearing, a thrust system and trailing support mechanism. The slewing bearings by Liebherr will be specifically developed for EPB-, Hard rock- and other types of shields. Possible gearing types are external, internal or without gear. The bearings are available in a diameter range of up to 9,000 mm and have been proved in subway projects – for example in Mumbai (India), London (UK) and Qingdao (China). Erector Bearings Single-row four-point bearings and cross-roller bearings are used for the erector...

Drive Technology for Tunnelling Machines Connection adaptable to any motor Connection for gearbox ventilation Optional brake can be mounted in the housing Safety clutch Integrated water cooling Seal system adaptable for harsh environmental conditions and optionally with pressure Electric motor Comfortable terminal box Water cooled housing Thermal control to bearings windings 4 maintenance openings which can be stocked with additional connections for brake and sensors Optionally supplied with pinion shaft Oil sight glas or optionally with level sensors DIN5480 involute spline at output...

Gear unit series for Cutterhead Drive The gearboxes have a modular design and are suitable for dynamic output torques of up to 610,000 Nm. They are equipped with a specially developed cooling system that keeps the temperatures of individual components low. This, in turn, increases the life expectancy of the components and considerably extends the time between oil changes and maintenance intervals. Liebherr has also developed a sealing system with pressureresistant seals as an option. This increases operational safety in harsh environmental and operating conditions. The gearboxes can be...

Hydraulic Pumps for Tunnelling Machines Following its successful implementation in a variety of min ing applications, the Liebherr axial piston pump DPVO series has also proven itself for tunneling machines. Given their robust and long-lasting built, the Liebherr pumps can with stand the harshest environments and work their way through kilometers of soft and hard rock with ease. Thanks to these features combined with the pumps high reliability and availability, Liebherr was able to win a contract with one of the worldwide market leaders in tunnelling technology. Suited for tunnel boring...

Size 215 impeller boosted *For nominal sizes 108 and 140, a high speed version, max. speed at Vg max = 2,300 rpm, is available. Values upon request. Electric proportional adjustment with positive or negative characteristic Hydraulic adjustment proportional to control pressure with positive or negative characteristic I Electric proportional pressure control / fan drive Components for Tunnelling Machines 11

Liebherr Components Slewing bearings Diesel engines Fuel injection systems Human-machine interfaces Control electronics and and gateways sensor technology Electric machines Power electronics From A to Z – the components division of the Liebherr Group offers a broad range of solutions in the area of mechanical, hydraulic, electric and electronic drive system and control technology. The efficient components and systems are produced at a total of ten production sites around the world to the highest standards of quality. Central contact persons for all product lines are available to our...