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NORMA high torque worm drive clamps

NORMA High Torque Worm Drive Clamps are ideally suited to heavy duty and high pressure applications where a very high tightening torque is required and in particular where wire reinforced, silicone, plastic or tough rubber hoses are employed.

The NORMACLAMP high torque clamp is constructed of four components. The wide-profile housing is permanently riveted to the saddle in four places ensuring that the 8 screw threads are always engaged in the band slots. The 16mm wide flexible band is 0.7mm thick and the screw has an 8mm A/F hex head combined with a screwdriver slot.

This design produces a considerable maximum recommended tightening torque of 17.00Nm - about twice that of a conventional worm drive hose clip.

A major feature is the one piece extended band liner to protect the hose from damage caused by extrusion and shearing of the hose through the worm drive slots.

An advantage over other heavy duty bolt clamps is the wide clamping range - approximately 20mm for each clamp.

The standard range of 16 sizes, on diameter, covers a clamping range of 25-232mm - larger sizes can be manufactured on request.