Tensioners are belt tensioners used in automotive drivetrains. The structure tensioner is mainly composed of a fixed casing, a tensioning arm, a wheel body, a torsion spring, a rolling bearing and a spring bushing, etc. It can automatically adjust the tensioning force according to the different tightness of the belt, making the transmission system stable, safe and reliable VSPZ bearings are used in Lada,kia,hyundai ,honda,toyota,renault ,dacia,fiat,opel,VW,peugeot,citroen and etc.