Components for
maritime applications

Liebherr delivers large-sized slewing bearings and extremely compact and durable slew drives as well as slewing gearboxes for the rotation of wing sails:

Slewing bearings: 800 – 9,500 mm

Slew drives: up to 1,700 mm

Slewing gearboxes: DAT 300 – 450

Sub-systems and components for:

• Flap adjustment
• Various other functions

Types: Roller / Ball-bearing slewing rings

External diameter: 800 – 9,500 mm

Rolling element diameter: 12 – 90 mm

Gearing: External / Internal / Customized / No gearing

Advantages:

• Extremly durable
• Made for harsh environmental conditions
• Special forms of seals

Types: Worm gear / Spur gear slew drives

External diameter: up to 1,700 mm

Gearing: External / Internal / Customized / No gearing

Advantages:

• Optimized balance between load capacity and torque
• Extremly durable
• Made for harsh environmental conditions
• Plug and play

Type: DAT 300 – 450

Output torque: 18,000 Nm –  60,000 Nm

Gear transmission ratio: 1:29 – 1:250

Advantages:

• Over 60 years of experience
• Outstanding quality
• Reliability
• Low installation space required
• High power density

Multiple options for your application: We use our many years of experience and know-how from wind, mobile or maritime applications to develop customized drive systems and solutions for various applications:

• Flap adjustment
• Mast tilting
• Mast telescoping
• Others

Components:

• Gearboxes
• Winches

The hydraulic power unit is used to supply oil to the tilting cylinders, the slewing cylinders and the slewing drive. These actuators perform the movements to raise, adjust or enlarge and rotate the ship's sail. In addition, the power unit has various monitoring elements such as pressure, temperature, contamination and level sensors, as well as proportional valve technology on the lowering brake valves. This provides a high level of safety and ensures that the hydraulic cylinders and slew drives function perfectly. The hydraulic power unit is prepared for installation in a shipping container.

Fuel tank capacity: 1750 l

Engine power: 3 x 22 kW

Operating pressure: 250 bar

Test pressure: 350 bar

Nominal volume flow at 1800 rpm: 3 x 180 l/min (axial piston pump) and 2 x 14 l/min (gear pump)

Weight: 5645 kg

Dimensions: 3,1 x 2,6 x 1,7 m

• Slewing bearings
• Slewing gearboxes
• Electric motors

Types: Roller / Ball-bearing slewing rings

External diameter: 800 – 9.500 mm

Rolling element diameter: 12 – 90 mm

Gearing: External / Internal/ Customized / No gearing

Advantages:

• Extremly durable
• Made for harsh environment conditions
• Special forms of seals

Types: DAT 400 – 500

Output torque: 44.000 Nm – 82.000 Nm

Gear transmission ratio: 1:29 – 1:250

Advantages:

• Over 60 years of experience
• Outstanding quality
• Reliability
• Low installation space required
• High power density

Compact, weight-optimised, robust: The air-cooled Licore Asynchronous Motors (LAM) are designed as maintenance-free three-phase squirrel cage motors and stand out due to a high power density. The motors are primarily created for use in variable-speed drives with frequency converters as well as for highly dynamic applications.

Type: Squirrel cage

Power range: 7.5 – 160 kW

Voltage range: 400 / 690

Speed: 750 / 1.500 / 1.800 min-1

Rating: IP 54

Cooling: Air-cooled

Made for harsh environmental conditions: Slewing bearings provided within best-in-class customer response times

Large / Segmented slewing bearings:

Types: Roller / Ball-bearing slewing rings / Segmented large bearings

Protection: Special sealing and / or surface protection

Types: 3-row cylindrical roller bearing (ROD)

External diameter: 800 – 9.500 mm +

Rolling element diameter : 12 – 140 mm +

Reliable and powerful: Thanks to their compact design, their ease of use and their long lifetime, the Liebherr gearboxes and hydraulic motors cover a broad range of deployment situations.

Planetary gearboxes

Axial piston double motors

Drives that suit you: Versatile drive variants can be created based on the series products from our product portfolio. By focusing on your requirement, Liebherr manufactures special gearboxes as individual drive solutions.*

Type: LPI 600 – LPI 1200 / PEG 800 – 1200

Output torque: 27,500 – 1,250,000 Nm

Collective: L2 / T5 / M5

Highlights at a glance:

• Many years of experience
• Individualized drive solutions
• Robust in harsh environments
• Long lifetime

Circulation: Closed / open

Adjustability: Variable

Nominal pressure: 450 bar

Maximum pressure: 500 bar

Nominal sizes: 165 – 108, 165 – 165, 165 – 215, 215 – 165

Advantages:

• Extremely robust and reliable
• High efficiency and power density
• Rotary groups are separately or parallelly adjustable
• Common port plate simplifies piping installtion
• Also available as a single unit axial piston motor