Dear Alex,

This can be deducted with the capacity = constant.

Capacity = Cross section * speed * density

Load = Cross section * Length

Belt tension = Load * friction factor

Cross section = Capacity / (speed * density)

Conclusion:

Higher speed results in smaller cross section (and smaller belt width) at equal capacity

Load = Capacity / (speed * density) * Length

Belt tension = = Capacity / (speed * density) * Length * friction factor

Conclusion:

Higher speed results in lower belt tension at equal capacity.

Evaluating the equations always explain how it works.

Have a nice day

Teus ■

Tension reduction approximately follows speed increase. Two points alter this assumption:

1. The counterweight value is torque (drive slip), belt sag, and dynamic control related. The counterweight reduction may not be reduced according to the increase in speed or visa-versa.

2. Speed, by itself, can be thought of as a temperature dependent property : increase in speed means an increase in rubber's rolling resistance similar to a decrease in temperature. Not 1:1, but at higher speed, it is significant with viscoelastic losses in belt cover in contact with idlers and in idler bearing lubricant. ■