Most industrial belts are Power transmission belts. Power transmission belts are actually friction belts that, by being placed on two or more pulleys, transfer power from one pulley to the other pulleys. Power transmission belts are produced in different shapes with flat or V-shaped edges and sometimes have grooves. The surface grooves of the power transmission belt تسمه انتقال نیرو are often produced in the longitudinal direction of the belt, but in Vardi they are also produced with similarities to timing belts and have vertical grooves in the main direction. The most widely used types of power transmission belts are propeller belts, V-belt belts, poly cord belts, tarpaulin belts, and universal belts.
The power transmission belt is under the influence of high tensile stresses in order to have a suitable surface friction on the pulley that guarantees proper performance. In addition to stretching, thermal stresses are often applied due to friction and also the location of the connection of the power transmission belt in the operation of this industrial belt تسمه صنعتی, and all these stresses are considered destructive stresses in order to reduce the life of this connection. In addition to other cases, contact with corrosive chemicals such as engine and hydraulic oils are also considered to be other factors that reduce the life of the power transmission belt. That is why the technology of producing and using suitable chemical compounds has a very effective role in the performance and useful life of power transmission belts.