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Together with our customers we develop the ideal slewing rings in the fields of open cast mining and bulk handling. Due to their robust design and perfected sealing technology, our cost optimized products offer long service life and low maintenance even under the most severe conditions. 


 We protect your profits through

  • perfected German quality products 
  • high level of operational safety
  • extended service life
  • multi-part sealing systems to prevent failure
  • reliable solutions from the heavy industry
  • global service


Sales to manufacturers (OEM) and operators. Customer-specific individual solutions from our application technology experts. Optimized for use in strip mining and bulk handling. 


Download our product flyer here.


The exchange of damaged slewing rings
is cost intensive and results in a significant profit loss.
IMO products stand for highest reliability.


IMO inside

Slewing rings - operational safety first

Due to the harsh environmental conditions, dust, dirt and extreme shocks, the operational safety and service life of all the components used is of decisive importance. IMO slewing rings are optimally sealed to protect from dust and dirt and can be equipped with long-lasting surface corrosion protection upon request. Our service experts will be happy to assist during installation and subsequent checks.

Bucket-wheel excavators 

IMO supplies a variety of combination slewing rings for bucket-wheel excavators, among other things for the rotation of the boom.

Dump trucks 

These all-terrain commercial vehicles feature triple row roller slewing rings as steering bearings with diameters of approx. 2500 mm. 

Stackers and reclaimers

The main bearings used in this equipment consist generally of external toothed ball /roller slewing rings in diameters ranging from 4 to 6 m.

Stacking conveyor - belt conveyor

A stacking conveyor on board of a ship is turned by an internal toothed triple row roller slewing ring. 

Ship loader - ship unloader 

These unloading systems - some of which operate continuously - feature IMO slewing rings, e.g. in cross beams and in rail vehicles.

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We like IMO


For more than two decades IMO has been known for reliable, customized solutions. Reliable and profitable.

IMO slewing rings combine highest technical quality requirements and safety standards with long service life and low maintenance, thus creating the conditions for long-term, intensive customer relations.

Here you will find a selection of references:

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Our favorites

Our strengths lie in the development, design and simulation of slewing rings. Our custom-designed products have proven especially valuable in open casst mining and bulk handling. They play a major role in ensuring the economic success of our customers.

Roller Slewing Ring 

triple row, internal toothed, optimized for highest axial loads and tilting moments

Combination Ball / Roller Slewing Rings

triple row, external toothed

Similar standard products


Double Axial Slewing Ring, optimized for maximum torque

double row, toothed 

Similar standard products

Ball Slewing Ring

single row, external toothed

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Our mission


Research and development are our investments in the future. They give us and our customers maximum compatibility. IMO detects, analyzes and evaluates market and customer requirements early on and integrates the results into new products. High user benefit and maximum technical performance are co-dependent, thus forming the basis for numerous patents and product awards in recent years.

Focus on research and development 
IMO engineers focus on continuous improvement of our products and ensure that your equipment used in open cast mining and bulk handling becomes even more efficient, convenient and safe.

IMO standard products
In the field of strip mining and material handling it is common to use customer-specific special slewing rings that are developed by IMO engineers in cooperation with the customers. In addition, IMO has a wide range of standard solutions that can be used in numerous other applications. 

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