Hydraulic belt tensioning system

Preventive Maintenance

Hydraulic belt tensioning system

The plug-and-play Gemex hydraulic belt tensioning system is designed to lower downtime, ease maintenance and save energy on fin fans and other belt driven equipment.

Product range

Gemex is a hydraulically adjustable and mechanically lockable motor platform, which allows technicians to check and, if necessary, adjust the belt tension in the easiest and most efficient way possible. The unique Gemex hydraulic belt tensioning system can be installed on every existing motor frame of fin fans and other belt driven equipment to:

Lower downtime

  • Belt tension and slipping can be checked and adjusted during production and without scaffolding
  • Better adjustment results in 4x longer lifetime of belts, pulleys and bearings
  • Easy belt replacement within 2 minutes

Easier maintenance

  • Easier access with less schaffolding required
  • No alignment required
  • Improved safety for maintenance team; safer belt replacements
  • Higher comfort for maintenance team; less slipping noise

Energy savings

  • Proven 5-10% energy savings

Company info

Since 1998, over 8000 Gemex systems have been installed worldwide in all industries that use belt driven equipment. Common applications are: Centrifugal fans, Fin fans, Cooling towers, Pumps, Compressors, Conveyors, Centrifuges, Mixers and Crushers. In addition, many belt tensioning systems have been customized to fit the customer’s specific needs and particular environment.



Gemex can pride itself on the following realizations:

  • +8.000 Gemex systems installed worldwide at Shell, Dow, Total, BP, Borealis, Cargill, BASF, Solvay, Bayer, AkzoNobel,…
  • Analysis by Shell on fin fans showing a ROI of 1 year and potential annual savings of USD 2M/year if implemented on 150 equipment
  • Shell has a global initiative to install Gemex on all fin fans
  • A 100% succes rate with zero failures and very low maintenance

Energy savings

Proven energy savings of 5-10%

Less downtime

Longer equipment lifetime, belt adjustments during production and quick replacement

Lower maintenance costs

Less replacements, maintenance and scaffolding


Installation possible on every existing motor frame

Ease of maintenance

Belt adjustment during production and replacement in just 2 minutes

Improved safety

Easier accesibility, less scaffolding and much lower risks of injuries