Oetiker Adjustable Band Clamps 159 - W4 (AISI 304)

 

PG 159 clamps are supplied flat. The clamp must be shaped prior to assembly. Each incremental step of the interlock reduces the diameter before closure by approximately 1.6 mm. The following assembly steps demonstrate how best to achieve an effective geometry. The clamp ear of both variants should be closed with constant tool jaw force, this practice is referred to as “force priority closure”. This assembly method ensures that a uniform and repeatable stress is applied to the application with a constant tensile force on the mechanical interlock.

The interlock consists of one or two load-retaining hooks that withstand tensile loading during closure and a lock tab designed to hold the hooks in their windows prior to closure.

With both designs the interlock can be engaged in several positions within the published range. This feature allows a single part to cover a range of diameters.

Read the installation instructions from the PDF carefully, because the interlock inside must be mounted differently than the interlock outside!

The ears of these clamps are closed with the recommended uniform force (so-called force priority). This method results in an even distribution of stress within the clamp material, without overloading either the clamp or the assembled parts. The nominal diameter of the clamp should always be chosen so that when installed with the correct clamping force, the ears are nearly closed. Complete process monitoring and 100% process documentation are available when using the "Electronically Controlled Pneumatic Power Tool Oetiker ELK" from Oetiker.

The table (PDF) shows the maximum applied closing force for different material dimensions.

Single use of the Ear Clip! Do not loosen the ear clip and use it again.