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The Murray Series 50 Ajusto-Matic is a screw adjustable tensioner with a spring loaded pivot arm. The arm maintains tension on the chain or belt and automatically takes up slack due to cyclic loading or wear. The Series 50 Ajusto-Matic offers the user all the advantages of the Ajusto-Screw plus the automatic take-up feature which substantially reduces maintenance.

Constructed of structural steel, the Series 50 Ajusto-Matic is a heavy duty tensioner available in a wide range of sizes capable of handling RC 40 to RC 200 chain. Its double coil spring is loaded by turning the adjustment screw in the base of the unit, forcing the idler arm against the slack side of the chain.

The Series 60 Ajusto-Matic has a spring loaded pivot arm but does not have the screw type adjustment. It is used in lighter applications (RC 35 to RC 60 chain) where automatic take-up is desired. Since the pivot arm must be adjusted by hand, the mounting location of the tensioner is important.

On both the Series 50 and 60 tensioners, the pivot arm swings 90 degrees from the center line in either direction, however, it must be positioned to swing in the direction of the chain (or belt) travel. For reversing drives, the tensioners are used in pairs; one on the slack side and one on the tight side.

ajusto-MATIC TENSIONERS

SERIES 50 ajusto-MATIC

SERIES 60 ajusto-MATIC

CAPABILITIES