Take the slip out of your belt-driven HVAC system with a self-adjusting T-Max V-Belt Tensioner. Automatic T-Max Tensioners eliminate the need for regular manual retensioning of drives by applying a preset load to the V-belt, increasing the belt's life and decreasing service calls. As the V-belt stretches, the spring-loaded tensioner automatically takes up the slack, saving energy, decreasing downtime, and reducing operating costs.

Combined with a Fenner Drives PowerMax Idler Pulley, T-Max Tensioners can be used to:

Reduce "Ladder Time"
  • Fewer maintenance calls lead to fewer trips to the roof to work on the system.
Reduce System Noise
  • Eliminate noise created by vibrations from loose belts.
Increase Energy Efficiency
  • Tension drive belts automatically, eliminating slip and torque losses associated with loose fitting V-belts.
Reduce Maintenance Costs
  • Eliminate belt re-tensioning costs and increase belt life.
Flexible Installation Options
  • Mount a T-Max Tensioner directly to the frame of the unit or with a Fenner Drives universal mounting bracket.
Fast Mounting
  • Depending on system brand, T-Max install time ranges from 15 to 45 minutes.
T-Max V-Belt Tensioner Assemblies

Fenner Drives T-Max V-Belt Tensioner Assemblies provide a simple, "off the shelf" tensioning solution to optimize HVAC system performance. T-Max Tensioner Assemblies combine a T-Max V-Belt Tensioner with a Fenner Drives PowerMax Idler Pulley, making it easy to find the right tensioner and pulley for your HVAC application.

Contact Us for more information on Fenner Drives T-Max V-Belt Tensioners and Tensioner Assemblies.

Light-Duty Rotary Tensioners
RT1000 Series
RT1000 Series
Medium-Duty Rotary Tensioners
RT3000 Series
RT3000 Series
Heavy-Duty Rotary Tensioners
RT4000 Series
RT4100 Series

With flexible mounting options, T-Max V-Belt Tensioners and Tensioner Assemblies can be mounted on most air handling units wherever and however you choose.

T-Max RT1000 Series Tensioner Mounted To Carrier Frame

Carrier Unit without a T-Max Tensioner
Carrier Unit with a T-Max RT1000 Series Tensioner

T-Max RT1000 Series Tensioner Mounted To 15-Ton Carrier Unit Frame

T-Max RT1000 Series Tensioner Mounted To Trane Motor Mount

T-Max RT1000 Series Tensioner Mounted To 7-Ton Carrier Unit Frame

T-Max RT3000 Series Tensioner Mounted To Idler Pulley Track

Light Duty Rotary Tensioners (RT1000, and RT1600 Series) V-belt, V-ribbed and Synchronous Belt Drives and Roller Chain Drives

Medium-Duty Rotary Tensioners (RT3000 Series) V-belt, V-ribbed and Synchronous Belt Drives and Roller Chain Drives

Heavy Duty Rotary Tensioners (RT4000 Series) V-belt, V-ribbed and Synchronous Belt Drives and Roller Chain Drives

Need help installing a T-Max V-Belt Tensioner? Contact us with your technical questions.

Q. How do I determine what size tensioner/idler I need for my belt drive?
A. Selection of the proper size tensioner can be made using our Tensioner selection guidelines. Contact us to determine the right amount of spring force based on the application and drive parameters.
Q. On my belt, where should the tensioner/idler be located?
A. Always install the tensioner/idler on the slack side of the drive.

For more answers to frequently asked questions V-Belt Tensioners, visit the T-Max FAQ page.