Components for maritime applications
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Application know-how and technology expertise Components for maritime applications

A strong partner for the maritime sector Components for maritime applications

Components by Liebherr make their case in harbours or on shore, as well as under extreme environmental conditions on the high seas. With its broad product range, Liebherr supports safe and economical operation, thereby contributing to the most decisive competitive factor: productivity. Liebherr has worked with renowned inspection companies for years and has experience with certification processes as well as a certified supply chain. Applications Components by Liebherr have been used for decades in maritime cranes of various manufacturers, making Liebherr Components an experienced partner in...

To reduce emissions and fuel consumption, ships are increasingly equipped with electric drive systems. Electric thrusters offer outstanding manoevering capabilities. Liebherr supports the electrification trend with various components that can be combined to complete system solutions. Frequency converter systems • Modular architecture allows for redundant systems • Compact design thanks to liquid cooling • Operation of multiple motors is possible Energy storage systems • To cover power peaks and reduce the necessary drive power • Powerful double-layer capacitors • Complete liquid-cooled...

Slewing bearings • For the slewing system of thrusters • Four-point bearings as single-piece or segmented bearings • Special offshore sealing systems available • Special corrosion protection Slewing drives • For the slewing system of thrusters • Number and sizes depending on installation, safety (redundancy) and power requirements Components for maritime applic

Maritime and offshore cranes Jacking systems and winches Rotational and linear movements are essential functions of of ships. Lifting complete vessels requires reliable drives deck equipment, working and lifting machinery onboard equipped with gearboxes or hydraulic cylinders. Slewing drives • For the drive system of jack-up systems or the swivel system of cranes • Output torques of 1,000 kNm and more • Up to output shaft module 50 • Customised solution available • Drive with electric or hydraulic motor Slewing bearings • For the swivel system of cranes • Depending on the required size, as...

Rope winches • For cranes or as deck winches • Customised design with a variety of options • Electric or hydraulic operation Components for maritime applications

Dredgers Dredging equipment maintains navigable shipping lines and and water mixtures challenges any component within the protects beaches from erosion by moving vast amounts of deck machinery of dredgers. sand and mud. This specific environment of abrasive sand Planetary plug-in gearboxes • For winches or for moving the suction arms • Standard or customised production • Optimal weight / performance ratio • For electric and hydraulic motors Rope winches • For cranes or various types of deck equipment • For high rope speeds and rope capacities 8 Components for maritime applications

Axial piston motors • To drive planetary plug-in gearboxes, rope winches and other hydraulically operated systems • As a constant or variable displacement motor • Single, double or multiple motor configuration Electric motors • To drive planetary plug-in gearboxes or rope winches and other electrically operated systems • KGF and KDF build motors Components for maritime applicat

Pipelaying vessels / tensioners Pipelines are necessary for the efficient transport of liquids and gases below the ocean's surface. Constructing and maintaining this infrastructure on the seafloor requires spe- Slewing drives • To drive gear ring rope winches or the swivel system of cranes • Design of the complete system in cooperation with the customer for a long service life and high reliability at a low cost • Wide range of serial gearboxes and availability of special solutions Gear rings • To drive gear ring rope winches • With external or internal gears • For high quality standards...

Planetary plug-in gearboxes • To drive rope winches • As a serial gearbox or for customised design • Optimal weight / performance ratio • Adaptable to electric and hydraulic motors Planetary gearboxes • To drive tensioned chains • Customer-specific solutions, depending on the requirements and adjacent construction • Also available with two drives in one axis Components for maritime applications 11

Power and communication cables connect long distances in between continents and short distances from wind turbines to shore regions. The vessels installing and maintaining these cables are equipped with specialised deck equipment. Drives and bearings for cable carousels or cable tensioners are amongst the key components that Liebherr is able to provide. Slewing drives • To drive swivel systems in cranes • As a serial gearbox or as a customised design • Even for very high output torques • Ideally matched to Liebherr slewing bearings JI 12 Components for maritime applications

Slewing bearings • For reliable rotation of the cable reel or the swivel system in cranes • One piece depending on size or segmented design • Offshore seals and corrosion protection Components for maritime applications 13

Turrets and buoys The connection of swiveling floating objects to a fixed seabed infrastructure has to absorb and transmit very large forces. Slewing bearings • For safe rotation during a lifespan of several decades • Custom design with extensive validation Components for maritime applications Liebherr produces large slewing bearings of the required sizes, if necessary as segmented units

Components for maritime applications

Access bridges and offshore cranes Access to offshore installations from floating vessels requires movable gangways. Their precise positioning with a reliable slewing system is of the utmost importance. For this, Slewing drives • Two, three or four planetary stages • One-piece, case-hardened and ground output shaft • High power density • Reduced rotational play for exact positioning Slewing bearings • For the swivel system in cranes and connecting bridges • Single-row / double-row four-point bearings • Corrosion protection against salty air • Offshore seals Components for maritime...