Timing Belts

Timing Belts

Fenner Precision is recognized as one of the world's leading suppliers of high volume, small pitch timing belts. We supply timing belts to the world's leading manufacturers.

Polyurethane Timing Belts

Fenner Precision offers a full line of Curvilinear (FHT, HTD) and T trapezoidal (MXL, XL, T-pitch) belts). Fenner Precision's High Torque (FHT) curvilinear timing belts are characterized by their deeper more rounded tooth profiles when compared to past generation style HTD or MXL and XL trapezoidal belts. FHT belts and pulleys provide smooth drive, low noise and vibration, longer life, and increased torque with low backlash. Whether you have to design a new drive, or upgrade a current design our global team of Product Development and Application Engineers are ready to help.

Curvilinear Belts

Curvilinear profile characteristics include:

  • FHT-1 Profile belts - 1 mm pitch.
  • FHT-2 Profile belts - 2 mm pitch.
  • FHT-3 Profile belts - 3 mm pitch.
  • FHT-5 Profile belts - 5 mm pitch.
  • HTD-3 Profile belts - of 3 mm pitch.
  • HTD-5 Profile belts - of 5 mm pitch.

Note: All Curvilinear profiles have uniformly formed injection molded polyurethane teeth and a choice of yarn reinforcements.

Note: HTD-3 must run in HTD-3 pulleys and are not compatible with FHT-3 belts and pulleys. Likewise, HTD-5 must run in HTD-5 pulleys and are not compatible with FHT-5 belts and pulleys.

Trapezoidal Belts

Trapezoidal profile characteristics include:

  • MXL Profile belts: .080" (2.032 mm) pitch trapezoidal tooth profile. As an option, Fenner Precision FHT 2.032 belts and pulleys can replace MXL belts and pulleys for increased torque transmission and reduced backlash. They are used without changing center distance or drive ratios; only new pulleys are needed with the FHT-2.032 profile.
  • XL Profile belts: .20" (5.08 mm) pitch trapezoidal tooth profile. As an option, Fenner Precision FHT 5.08 belts and pulleys can replace XL belts and pulleys for increased torque transmission and reduced backlash.
  • T2.5 Profile belts: 2.5 mm pitch trapezoidal tooth profile.
  • T5.0 Profile belts: 5.0 mm pitch trapezoidal tooth profile. Fenner Precision FHT-5.0 belts and pulleys can replace T5.0 belts and pulleys for increased torque transmission and reduced backlash.