Series-production range

With seven basic gearboxes, the LPI series covers a dynamic torque range from 20,000 Nm to 335,000 Nm. Large customer-specific gearboxes with a maximum torque of 2,300,000 Nm are also available. The gearboxes can be produced with two, three or four stages, with the transmission range extending from 15 to 750. Other gear ratios can be produced on demand.

Series Output torque*
Dynamic load
Peak values for short duration
Alternating load
LPI 0600 27,500 Nm 45,000 Nm
LPI 0700 40,000 Nm 65,000 Nm
LPI 0800 55,000 Nm 95,000 Nm
LPI 0900 75,000 Nm 125,000 Nm
LPI 1000 120,000 Nm 190,000 Nm
LPI 1200 185,000 Nm 335,000 Nm
*Reference torque based on FEM 1.001 L2/T5/M5 for an output speed of 15 1/min and a dynamic load (rope winch application)

Applications

Thanks to the high degree of standardisation and reduced component complexity, the planetary gearboxes of the LPI series can be configured for a wide variety of applications. The range can be deployed in both mobile and stationary applications. The gearboxes are especially suited nevertheless for lifting and drive applications, where they can be used for example in rope winches, or in drive units for chain and crawler vehicles.

The gearboxes of the LPI series-production range also form the basis for Liebherr's electrical travel drive systems, offering reliable solutions for charge weights of up to 100 tonnes.

Electric travel drive systems from Liebherr

  • Driving
    As travel drives for chain and crawler vehicles, the LPI gearboxes get mobile machinery moving.

    Driving

    As travel drives for chain and crawler vehicles, the LPI gearboxes get mobile machinery moving.

  • Lifting
    As plug-in gearboxes for rope winches, the LPI gearboxes can lift even the heaviest of loads.

    Lifting

    As plug-in gearboxes for rope winches, the LPI gearboxes can lift even the heaviest of loads.

  • Powering
    As the interface for an electric or hydraulic motor, LPI gearboxes can be found in all kinds of machinery

    Powering

    As the interface for an electric or hydraulic motor, LPI gearboxes can be found in all kinds of machinery

  • Flexible equipment

    Multiple equipment possibilities give LPI-series planetary gearboxes the highest degree of flexibility.

    • Interfaces: The interfaces to the motor are designed to allow for the effortless assembly of any conventional electric and hydraulic motor. This ensures the best possible gearbox/motor drive combination.
    • Braking: According to purpose, various brake types are available as options. Examples include electromagnetic brakes and multi-disc brakes. Furthermore, customers can choose between two different brake sizes.
    • Seals: With radial shaft seals, V-rings and mechanical or labyrinth seals, various gearbox seals are available, to be deployed according to the application.
    • Sensor technology: To monitor the oil quality and status, the planetary gearboxes can optionally be fitted with sensors.

    Highest quality and reliability

    LPI gearbox on load test rig

    LPI gearbox on load test rig

    The latest production and materials technologies are used in the manufacturing of LPI gearboxes. This makes the planetary gearboxes a convincing proposition, offering maximum torque with minimum installation space requirements. In their design calculation, the Liebherr engineers use simulation and calculation methods that are state-of-the-art, including the finite element method.

    In-house load test rigs are used for final quality control of the products. In addition, in line with the standards of established classification companies, the requisite test certificates can be issued for the new LPI gearboxes and the necessary acceptance tests can be carried out in-house.

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    Engineering expertise

    During the design and development of high quality gearbox solutions, Liebherr relies on state-of-the-art development and calculation methods. Engineering for drives