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ZETASASSI® LINEAR BELT TENSIONER ET3PU with idler roller
ET3 PU with belt roller, automatic device linear spring-action belt drive tensioner consisting of a base in special, very sturdy, antiseize aluminium alloy with tensile strength of 440MPa that ensures perfect glide on high tensile strength galvanized steel rods, to which a threaded aluminium head is fastened. The head equipped with an idle belt tensioning roller with double-shielded bearings.