Products > Heavy Duty  > Slewing rings

 

Slewing rings

Our slewing ring bearings are designed to be able to handle high axial, radial and tilting moments, simultaneously. In addition, they can be combined with pinions (gears), planetary gears and motors, both hydraulic and electric. 


They are used in various application areas, for example machines in infrastructure, agriculture, forestry, mining and the shipbuilding industry. 

Contact us if you want our experts to help you find the right product.

• Designed to handle large axial, radial and tilting moments at the same time.
• Availability of dimensions 100 mm to 6000 mm with or without cogs
• Inner tooth or outer tooth
• Ball bearings or roller bearings
• Sealed bearing tracks
• Can be supplied with various types of certificates including classification for marine applications

Slewing bearing series 900

Series 900 have a robust construction and are suitable for simpler applications. They are also available in a series with reduced or preloaded bearing play. Read more under general info.

Operating conditions:
• Permissible temperature range -25°C to +70°C
• Max permitted rotation speed 40000 / ball diameter
• With a horizontal axis of rotation 20000 / ball diameter
• Pressure load
• Bolt class 10.9

Areas of use:
Simple turntables, swing mechanisms, bogies, light cranes and construction machines

Characteristics:
• Robust design for heavy installations
• Cost effective design
• Suitable for use with low precision requirements
• For Series 920, precision versions are available.

90-20 without cogs

  • Flange design
  • 8 sizes
  • Ball diameter 20 mm
  • Ball circle diameter from 311 to 1091 mm

 

Also available with:

  • Reduced bearing play
  • Without holes in the rings
  • Double the number of fastening holes in the rings
  • With stock game shipped

 

Material in rings: C45N

  • 4 grease nipples evenly spaced
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

 

91-20 with external gears

  • Flange design
  • 8 sizes
  • Ball diameter 20 mm
  • Ball circle diameter from 311 to 1091 mm
  • Unhardened teeth

 

Also available with:

  • Reduced bearing play
  • Without holes in the rings
  • Double the number of fastening holes in the rings
  • With stock game shipped

 

Material in rings: C45N

  • 4 grease nipples evenly spaced
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

 

92-20 with internal gears

  • Flange design
  • 8 sizes
  • Ball diameter 20 mm
  • Ball circle diameter from 311 to 1091 mm
  • Unhardened teeth

 

Also available with:

  • Reduced bearing play
  • Without holes in the rings
  • Double the number of fastening holes in the rings
  • With stock game shipped

 

Material in rings: C45N

  • 4 grease nipples evenly spaced
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

 

90-32 without cogs

  • Flange design
  • 6 sizes
  • Ball diameter 32 mm
  • Ball circle diameter from 955 to 1455 mm

 

Material in rings: C45N

  • 6 grease nipples evenly spaced
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

91-32 with external gears

  • Flange design
  • 6 sizes
  • Ball diameter 32 mm
  • Ball circle diameter from 955 to 1455 mm
  • Unhardened cogs are not included

 

Material in rings: C45N

  • 6 grease nipples evenly spaced
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

 

92-32 with internal gears

  • Flange design
  • 6 sizes
  • Ball diameter 32 mm
  • Ball circle diameter from 955 to 1455 mm
  • Unhardened cogs are not included

 

Material in rings: C45N

  • 6 grease nipples evenly spaced
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

 

IMO slewing bearing series 100

An all-round series for most simpler applications that need to be cost optimized. They are insensitive to vibrations and four different designs provide a large selection.

Operating conditions:
• Permissible temperature range -25°C to +70°C
• Max permitted rotation speed (120, 125, 150) 40000 / ball diameter
• Max permitted rotation speed (116) 80000 / ball diameter
• Pressure load
• Bolt class 10.9

 

Areas of use:
Turntables, slewing mechanisms, bogies, light to medium cranes and construction machinery, winches, wind turbines, handling equipment.

 

Characteristics:
• Robust design
• Insensitive to vibrations
• Cost effective design
• Medium precision
• For series 116 and 120, precision versions are available

 

Contact one of our experts for more information.

 

10-16 without cogs

  • 5 sizes
  • Ball diameter 16 mm
  • Ball circle diameter from 100 to 500 mm
  • Also available with reduced or preloaded bearing play.

 

Material in rings: C45N

  • 1 grease nipple
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

11-16 with external gears

  • 5 sizes
  • Ball diameter 16 mm
  • Ball circle diameter from 100 to 500 mm
  • Also available with reduced or preloaded bearing play.

 

Material in rings: C45N

  • 1 grease nipple
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

 

10-20 without cogs

  • 8 sizes
  • Ball diameter 20 mm
  • Ball circle diameter from 311 to 1091 mm
  • Also available with reduced or preloaded bearing play

 

Material in rings: C45N

  • 4 grease nipples
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

 

11-20 with external gears

  • 8 sizes
  • Ball diameter 120 mm
  • Ball circle diameter from 311 to 1091 mm
  • Also available with reduced or preloaded bearing play
 

Material in rings: C45N

  • 4 grease nipples
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

12-20 with internal gears

  • 8 sizes
  • Ball diameter 12 mm
  • Ball circle diameter from 311 to 1091 mm
  • Also available with reduced or preloaded bearing play

Material in rings: C45N

  • 4 grease nipples
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

10-25 without cogs

  • 11 sizes
  • Ball diameter 25 mm
  • Ball circle diameter from 455 to 1455 mm
 

Material in rings: C45N

  • 1 grease nipple
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

11-25 with external gears

  • 11 sizes
  • Ball diameter 25 mm
  • Ball circle diameter from 455 to 1455 mm

Material in rings: C45N

  • 4 grease nipples
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

12-25 with internal gears

  • 11 sizes
  • Ball diameter 25 mm
  • Ball circle diameter from 455 to 1455 mm

 

Material in rings: C45N

  • 4 grease nipples
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

11-50 with external gears

  • 4 sizes
  • Ball diameter 50 mm
  • Ball circle diameter from 1900 to 2645 mm
 

Material in rings: 42CrMo4V

  • 9 to 12 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

12-50 with internal gears

  • 4 sizes
  • Ball diameter 50 mm
  • Ball circle diameter from 1900 to 2645 mm
 

Material in rings: 42CrMo4V

  • 9 to 12 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

Slewing bearing series 800

IMO slewing ring bearings series 800 are suitable for medium loads. They have a very robust construction and are suitable for applications with high vibrations. They handle high axial loads and are insensitive to assembly against uneven foundations.

Operating conditions:
• Permissible temperature range -25°C to +70°C
• Max permitted rotation speed 40000 / ball diameter
• Pressure load
• Bolt class 10,9

Areas of use:
Turntables, slewing mechanisms, bogies, winches, medium to large cranes and construction machinery.

Characteristics:
• Robust design
• Can handle rough assembly
• Suitable for vibration conditions
• High axial loads

Contact one of our experts for more information.

81-40 with external gears

  • 5 sizes Ball diameter
  • 40 mm Double ball track
  • Ball circle diameter from 2240 to 3150 mm

 

Material in rings: 42CrMo4V

  • 4 to 6 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

81-50 with external gears

  • 6 sizes
  • Ball diameter 50 mm
  • Double ball lane
  • Ball circle diameter from 2987 to 4140 mm

 

Material in rings: 42CrMo4V

  • 4 to 6 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated
 

82-40 with internal gears

  • 5 sizes
  • Ball diameter 40 mm
  • Double ball lane
  • Ball circle diameter from 2240 to 3150 mm

 

Material in rings: 42CrMo4V

  • 4 to 6 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

82-50 with internal gears

  • 11 sizes
  • Ball diameter 25 mm
  • Ball circle diameter from 455 to 1455 mm

 

Material in rings: C45N

  • 4 grease nipples
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

Slewing bearing series 500

IMO slewing ring bearings series 500 are equipped with combination bearings (roller & balls) which allow very high radial loads. The construction provides a very long service life if the axial load is dominant. They have good circular accuracy combined with high stiffness.

Operating conditions:
• Permissible temperature range -25°C to +70°C
• Max permitted rotation speed 20000 / ball diameter
• Vertical axis only
• Pressure load only
• Bolt class 10,9

 

Areas of use:
Recyclers, stackers and other bulk material handling equipment, turntables.

 

Characteristics:
• High axial load capacity
• Long service life under axial load
• High stiffness
• Good running precision

 

Contact one of our experts for more information.

51-32 with external gears

  • 4 sizes
  • Ball diameter 32 mm
  • Ball circle diameter from 3550 to 4250 mm
 

Material in rings: 42CrMo4V

  • 10 to 12 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

 

51-40 with external gears

  • 4 sizes
  • Ball diameter 40 mm
  • Double ball lane
  • Ball circle diameter from 4250 to 4900 mm

 

Material in rings: 42CrMo4V

  • 16 to 16 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

 

Slewing bearing series 300

IMO slewing ring bearing series 300 combines high precision with high radial loads, high tilting moments and long service life. They have double raceways and high rigidity.

Operating conditions:
• Permissible temperature range -25°C to +70°C
• Max permitted rotation speed 20000 / ball diameter
• Pressure load
• Bolt class 10,9

Areas of use:
Heavy harbor cranes, ship cranes, tower cranes and grapple cranes, radar antennas, wind turbine main assemblies, tunnel boring machines and loading stands (oil, gas), machine tools (where high duty cycles are required).

Characteristics:
• High precision
• Highest axial load capacity
• High tilt moment
• High stiffness
• Long service life

Contact one of our experts for more information.

 

32-20 with internal gears

  • 5 sizes
  • Roller diameter 20 mm (double roller tracks)
  • Double ball lane
  • Ball circle diameter from 2240 to 3150 mm.

 

Material in rings: 42CrMo4V

  • 3 to 5 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

31-20 with external gears

  • 5 sizes
  • Roller diameter 20 mm (double roller tracks)
  • Ball circle diameter from 1250 to 2000 mm.

 

Material in rings: 42CrMo4V

  • 3 to 5 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered mother-in-law
 

31-25 with external gears

  • 5 sizes
  • Roller diameter 25 mm (double roller tracks)
  • Roll circle diameter from 1800 to 2800 mm.

 

Material in rings: 42CrMo4V

  • 6 to 10 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

32-25 with internal gears

  • 5 sizes
  • Roller diameter 25 mm (double roller tracks)
  • Roll circle diameter from 1800 to 2800 mm.

 

Material in rings: 42CrMo4V

  • 6 to 10 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

31-32 with external gears

  • 6 sizes
  • Roller diameter 32 mm (double roller tracks)
  • Roll circle diameter from 2240 to 4000 mm

 

Material in rings: 42CrMo4V
  • 7 to 9 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated
 

32-32 with internal gears

  • 6 sizes
  • Roller diameter 32 mm (double roller tracks)
  • Roll circle diameter from 2240 to 4000 mm

 

Material in rings: 42CrMo4V

  • 7 to 9 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated
     
 

31-40 with external gears

  • 5 sizes
  • Roller diameter 40 mm (double roller tracks)
  • Roll circle diameter from 2800 to 4500 mm

 

Material in rings: 42CrMo4V

  • 7-14 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated
 
 

32-40 with internal gears

  • 5 sizes
  • Roller diameter 40 mm (double roller tracks)
  • Roll circle diameter from 2800 to 4500 mm

 

Material in rings: 42CrMo4V

  • 7-14 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated
 
 

31-50 with external gears

  • 5 sizes
  • Roller diameter 50 mm (double roller tracks)
  • Roll circle diameter from 3150 to 4750 mm

 

Material in rings: 42CrMo4V

  • 8 to 12 grease nipples
  • depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

32-50 with internal gears

  • 5 sizes
  • Roller diameter 50 mm (double roller tracks)
  • Roll circle diameter from 3150 to 4750 mm

Material in rings:

  • 42CrMo4V 8 to 12
  • grease nipples depending on size
  • The mounting holes are evenly spaced
  • Delivered pre-lubricated

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