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Gemex™ belt tensioning system

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Gemex™ belt tensioning system

The Gemex™ belt tensioning system allows for the quick and easy replacement of belts on any critical machine without the need of the alignment.


The Gemex™ belt tensioning system makes it possible to change belts on any critical machine in just a few minutes. No alignment needs to be done when changing belts or adjusting belt tension - it is done during the initial installation. Correct alignment and belt tension gives your belts, pulleys, and bearings longer and more consistent life, while also providing the conditions for maximum efficiency.

Gemex™ belt tensioning systems are available in standard models for belt drives from 1 kW up to 500kW. We can also offer bespoke designs for machines where our standard models cannot be applied.

Gemex™ belt tensioning systems can be found in nearly every industrial environment which uses belt transmissions; as well as in clean environments such as the pharmaceutical industry, ventilation systems in hospitals and in other public buildings.

Key features/benefits

  • Consistent high performance
  • Alignment only required at installation
  • Shorter (and fewer) production stops
  • Lower consumption of spare parts


  • Any V Belt Driven Device


  • Materials Handling (Mining)
  • Materials Handling (Aggregates)

Gemex™ – Belt Tensioning System


Design standards 


Design ratings 


Size range/-dimensions

IEC90 to IEC400 

Pressure class/-power

1 kW to 500 kW

Temperature range

-10ºC to 40ºC


For belt drives from 1 kW up to 500kW. We can also offer bespoke designs for machines.


Cast Iron or Fabricated Units


On request

Product Support and Services

Weir Minerals Services: Performance. Reliability. Options.

Our Weir Minerals Service team is your trusted operating partner.

Our knowledge is built from over 140 years engineering expertise and experience. It is from this wealth of experience that our Performance, Reliability and Options (PRO) Services have been designed to ensure your operation and process equipment consistently performs at its optimal capacity.

By focusing on performance and reliability we work with you to achieve maximum productivity and efficiency for your operation, combined with flexible commercial options.

With an extensive global network and the ability to service on-site or at one of over 150 dedicated service centres, we are always there when you need us, no matter how remote your operation is.

Performance, Reliability and Options (PRO) ensure the success of your business.


Our performance-enhancing engineering services ensure that you not only receive the best in class equipment, but expert configuration and support to optimise each of your applications.


Prevention is better than cure, and our Weir Minerals Service team is committed to preventative and predictive maintenance. We work with you over the products’ entire wear life to ensure it reliably performs to its original design and runs continually without unplanned downtime and lost productivity.


As a trusted partner we understand the challenges that you face. We offer a range of flexible commercial arrangements to overcome your capital constraints, because we know we are not successful unless you are.

View our Services

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Due to recent changes in data privacy laws in Russia, we are unable, at this time, to accept enquiry form submissions from businesses based in Russia. Please email your enquiry to the global contact address shown on this page and we will respond to your enquiry directly.

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Key Information

Product type

Belt Tensioning System



Industries served

Mining, Aggregates