Slewing rings
for industry

What is a slewing ring?

Slewing rings are large diameter antifriction bearings for the simultaneous transmission of axial and radial forces as well as tilting moments. They replace traditional solutions with fixed and floating bearings as well as king pin bearings. Frequently, this results in bearings with axial/radial bearing combinations with one bearing point. This can significantly simplify the design of the mounting structure and the installation of the bearings, which in turn reduces effort and costs.

Cost-effective, tried-and-tested IMO antifriction bearings are available as:

  • Ball slewing rings, roller slewing rings, and ball-roller combination slewing rings
  • Four-point bearings, double four-point bearings/eight-point bearings, flange bearings, wire race bearings, cross roller bearings
  • Segmented slewing rings
  • Gear rims
  • External gearing, internal gearing, or without gearing
  • Diameter ranging from 100 mm to 6000 mm
  • With cages (steel, brass, or plastic) or spacers (brass or plastic) 
  • With standard seals or specially produced special seals
  • Optionally with induction-hardened raceways
  • Different corrosion protection coatings possible

IMO slewing rings have mounting holes and a sealed raceway system with grease lubrication. They can be combined with motors, pinions, and planetary gears. Functions and parts of the mounting structure - such as attached bearing rings - can be integrated.

Catalog standard parts or tailored slewing rings

IMO slewing rings are available as a large selection of standard series. However, the special capabilities of our engineers lie in the development of special custom designs for our customers. We can work with you to develop the perfect slewing ring for your application.

Contact us - we'd be delighted to advise you!

You are ready to send us your technical specifications to get an offer?

Our ready-to-install unit - the IMO slew drive - often replaces slewing rings that need combining with a large number of individual parts. Find out about how you can avoid the extra effort of mounting individual parts and performing unnecessary adjustment work here.

Find your ideal slewing ring:

Ball slewing rings

Single-row or double-row,
four-point raceway geometry,
enables robust constructions for tough usage conditions.

Ball diameter
12 to 80 mm

Roller slewing rings

Single-row, double-row, or triple-row,
top load with really small installation space,
top requirements for even load distribution.

Roller diameter
10 to 100 mm

Ball-roller combination slewing rings

Combination of roller and ball slewing rings,
used for dominant axial force and
low radial loads/tilting moments.

Ball diameter
25 to 80 mm
Roller diameter
to 100 mm

Slewing rings