Abstract
Synchronous belts are generally made from chloroprene rubber or polyurethane. These mechanical properties will be affected by the thermal environment and the heat generation in the synchronous belt. Therefore, the change in belt temperature is considered to affect the transmission efficiency. However, the influence of temperature on the transmission efficiency in synchronous belt drives has not yet been clarified. In the present study, the transmission efficiency in synchronous belt drives under the no-transmitted torque was experimentally investigated when the belt temperature was changed. The calculated torque loss in consideration of the change in modulus of elasticity by the belt temperature agrees with the experimental result, and the torque loss caused by the meshing state between the belt and pulley teeth is decreased with the rise of the belt temperature.
