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What is the purpose of using a tensioner pulley for the drive belt?

1 Answers

VonIker

07/29/25 7:39pm

The purpose of using a tensioner pulley for the drive belt is to adjust the initial tension of the belt. The tensioner pulley mainly consists of a fixed housing, tensioner arm, wheel body, torsion spring, rolling bearing, and spring bushing, etc. It can automatically adjust the tension according to the different tightness levels of the belt, ensuring the transmission system is stable, safe, and reliable. The tensioner pulley uses a spring or hydraulic pressure to generate a force that tightens the belt, allowing the belt to press against the working pulley with appropriate pressure. Precautions for the tensioner pulley are: 1. The tension force of the tensioner pulley should not be too small, as insufficient tension will reduce the friction between the belt and the working pulley, eventually causing the belt to slip; 2. The tensioner pulley should generally be placed on the inner side of the slack side, so that the belt is subjected to only one-way bending, and it should also be as close as possible to the large pulley to avoid excessively affecting the wrap angle of the small pulley.

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