Types of slewing bearings

Liebherr is one of the world's leading producers of large diameter bearings. Our portfolio comprises many different types, manufactured in a wide range of dimensions and designs.

All of our slewing bearings can be manufactured with internal gears, external gears or without gearing. Special gearing, such as helical and worm gears, are also available upon request. The seal concept is also configured for each individual case of use, and takes account of particular environmental conditions, such as particularly saline or dusty air. The bearings can also be coated for extra corrosion protection.

Ball bearing slewing rings

Ball bearings are particularly suitable for applications exerting low to medium loads on the bearings. Usually, polymer spacers are installed between the rolling elements, although bearing designs with steel or brass cages are also available.

Standard series

In addition to customised projects, our portfolio contains a comprehensive standard programme of one-piece Liebherr ball bearing slewing rings.

Ball bearings from the standard programme

Technical information

Table is scrollable
External diameter 800 - 9,500 mm
Rolling element diameter 20 - 90 mm
Gearing with external gears / with internal gears / without gearing
special gearing upon request
Gear module 8 - 50 mm

Types of ball bearing slewing rings

  • Single-row four-point bearings
    Single-row four-point bearings are used, for example, for the slewing of excavators, the boom movement of tower cranes and as drive elements for large rope winches.

    Single-row four-point bearings

    Single-row four-point bearings are used, for example, for the slewing of excavators, the boom movement of tower cranes and as drive elements for large rope winches.

  • Single-row four-point bearings with special seals
    Special forms of seals are always used whenever bearings are exposed to particularly harsh environmental conditions, and protect the slewing bearing, for example, from seawater penetration.

    Single-row four-point bearings with special seals

    Special forms of seals are always used whenever bearings are exposed to particularly harsh environmental conditions, and protect the slewing bearing, for example, from seawater penetration.

  • Double-row four-point bearings
    Double-row four-point bearings can support significantly higher loads than single-row four-point bearings, for an equivalent diameter. They are used in applications with high loads and restricted installation space, such as for rotor blade adjustments on wind turbines.

    Double-row four-point bearings

    Double-row four-point bearings can support significantly higher loads than single-row four-point bearings, for an equivalent diameter. They are used in applications with high loads and restricted installation space, such as for rotor blade adjustments on wind turbines.

  • Double-row ball bearings
    Double-row ball bearing slewing rings are distinguished by their high cost-effectiveness and their robust design. They are used, for example, in crane technology.

    Double-row ball bearings

    Double-row ball bearing slewing rings are distinguished by their high cost-effectiveness and their robust design. They are used, for example, in crane technology.

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    Engineering expertise

    As an engineering partner for slewing bearings, Liebherr uses state-of-the-art processes - starting from development through to production. Engineering for slewing bearings

    Roller bearing slewing rings

    Liebherr roller bearings are suitable for medium to high loads. They are designed as standard in triple-row configurations with two axial and one radial roller raceway. Depending on the case of use, other designs and variants are however also available.

    Standard series

    In addition to customised projects, our portfolio contains a comprehensive standard programme of one-piece Liebherr roller bearing slewing rings.

    Roller bearings from the standard programme

    Technical information

    Table is scrollable
    External diameter 800 - 9,500 mm
    Rolling element diameter 12 - 140 mm
    Gearing with external gears / with internal gears / without gearing
    special gearing upon request
    Gear module 8 - 50 mm

    Types of roller bearing slewing rings

  • Triple-row roller bearings
    In heavy machines, such as mining excavators, roller bearing slewing rings tend to be used mainly on account of the high loads.

    Triple-row roller bearings

    In heavy machines, such as mining excavators, roller bearing slewing rings tend to be used mainly on account of the high loads.

  • Triple-row roller bearings for tunnel boring machines
    Roller bearing slewing rings for tunnel boring machines are fitted with a preloaded retaining raceway. The cup springs for preloading the raceway ensure that the rolling elements never lose contact with the raceway, thereby guaranteeing optimised wear characteristics.

    Triple-row roller bearings for tunnel boring machines

    Roller bearing slewing rings for tunnel boring machines are fitted with a preloaded retaining raceway. The cup springs for preloading the raceway ensure that the rolling elements never lose contact with the raceway, thereby guaranteeing optimised wear characteristics.

  • Triple-row roller bearings with special seals
    Triple-row roller bearing slewing rings can be fitted according to need with specially-developed seal systems. These can protect the bearing in thrusters, for example, against the penetration of seawater while at the same time preventing the leakage of lubricants.

    Triple-row roller bearings with special seals

    Triple-row roller bearing slewing rings can be fitted according to need with specially-developed seal systems. These can protect the bearing in thrusters, for example, against the penetration of seawater while at the same time preventing the leakage of lubricants.

  • Cross roller bearings
    On account of their play-free mounting, cross roller bearings offer greater precision than traditional roller bearings. They are used above all in tunnel boring machines and in conveyor technology.

    Cross roller bearings

    On account of their play-free mounting, cross roller bearings offer greater precision than traditional roller bearings. They are used above all in tunnel boring machines and in conveyor technology.

  • Roller bearings with bolt connection
    Bearing designs with bolt connections are used when in the presence of a special adjacent construction. This is often the case with cranes.

    Roller bearings with bolt connection

    Bearing designs with bolt connections are used when in the presence of a special adjacent construction. This is often the case with cranes.

  • Roller bearings with bayonet joint
    Bearing designs with bayonet joints are used in the presence of a special adjacent construction. This is often the case with cranes

    Roller bearings with bayonet joint

    Bearing designs with bayonet joints are used in the presence of a special adjacent construction. This is often the case with cranes

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    Segmented large bearings by Liebherr

    In order to accommodate the largest dimensions, the Liebherr portfolio also includes segmented large diameter bearings alongside its one-piece slewing bearings. Segmented large bearings

    Engineering expertise

    As an engineering partner for slewing bearings, Liebherr uses state-of-the-art processes - starting from development through to production. Engineering for slewing bearings

    Combined roller and ball bearing slewing rings

    Combined roller and ball bearings are designed as standard with a roller raceway (supporting raceway) and a ball raceway (retaining raceway). This makes this type of design particularly suitable for high axial loads and harsh environmental conditions.

    Standard series

    In addition to customised projects, our portfolio contains a comprehensive standard programme of one-piece Liebherr combined roller and ball bearings.

    Combined roller and ball bearings from the standard programme

    Technical information

    Table is scrollable
    External diameter 800 - 9,500 mm
    Rolling element diameter 16 - 100 mm
    Gearing with external gears / with internal gears / without gearing
    special gearing upon request
    Gear module 8 - 50 mm
  • Combined roller and ball bearing slewing rings
    The combination of roller and ball bearing offers a cost-effective alternative to traditional roller bearing slewing rings. This bearing type is mainly designed for axial loads, and is frequently used in conveyor technology, for example with bucket excavators.

    Combined roller and ball bearing slewing rings

    The combination of roller and ball bearing offers a cost-effective alternative to traditional roller bearing slewing rings. This bearing type is mainly designed for axial loads, and is frequently used in conveyor technology, for example with bucket excavators.

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    Engineering expertise

    As an engineering partner for slewing bearings, Liebherr uses state-of-the-art processes - starting from development through to production. Engineering for slewing bearings

    Tapered roller bearings

    Tapered roller bearings can be subjected to radial and axial loads. They are suited to high load conditions. The tapered form of the rolling elements ensures optimum rolling characteristics. The play-free bearing mounting makes the tapered roller bearing particularly suitable for the highest precision and accuracy requirements.

    Technical information

    Table is scrollable
    External diameter 800 - 9,500 mm
    Average tapered roller diameter 40 - 110 mm
    Gearing with external gears / with internal gears / without gearing
    special gearing upon request
    Gear module 8 - 50 mm
  • Tapered roller bearings with no gearing
    Optimum rolling characteristics and ideal power distribution are guaranteed by the layout and design of the tapered rollers. This design is used, for example, as the main bearing in wind turbines or in tunnel boring machines.

    Tapered roller bearings with no gearing

    Optimum rolling characteristics and ideal power distribution are guaranteed by the layout and design of the tapered rollers. This design is used, for example, as the main bearing in wind turbines or in tunnel boring machines.

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    Engineering expertise

    As an engineering partner for slewing bearings, Liebherr uses state-of-the-art processes - starting from development through to production. Engineering for slewing bearings

    Gear rings

    Liebherr also manufactures gear rings, used for example in rope winch drives or for the yaw adjustment of wind turbines. The gear rings can also be configured in segments according to customer requirements.

    Technical information

    Table is scrollable
    External diameter 800 - 9,500 mm
    Gearing with external gears / with internal gears
    special gearing upon request
    Gear module 8 - 50 mm
    Weight 25 - 25,000 kg
  • Gear rings
    Liebherr has developed its own gear cutting machines for the milling of the gear rings. These ensure the best possible gearing results and guarantee optimum precision.

    Gear rings

    Liebherr has developed its own gear cutting machines for the milling of the gear rings. These ensure the best possible gearing results and guarantee optimum precision.

    Gear cutting machines from Liebherr
  • Contact

    Downloads

    Engineering expertise

    As an engineering partner for slewing bearings, Liebherr uses state-of-the-art processes - starting from development through to production. Engineering for slewing bearings