Flat endless belts have a maximum operating or working tension equivalent 10% of their breaking or tensile strength. Total tension (see discussion below) on a belt should never exceed the operating or working tension.
Belts in motion on pulleys develop tight side tension (T1) slack side tension (T2). Tight side tension is created on that section of belt approaching the driveR pulley. Slack side tension is created on the section of belt approaching the driveN pulley.
These tensions are illustrated as follows:
Tight side tension plus slack side tension is equal to to total tension (TT).
This can be stated as T1 + T2 = TT.
Tension available to do work is stated as effective tension (Te). Effective tension can be found by subtracting slack side tension from tight side tension (Te = T1 – T2) or can be computed using the following formula:
Te (in pounds) = 33,000 X Horsepower (hp)
Belt speed in feet per minute
Please contact the factory for complex drives and any questions.