The unique 3-leaf expansion unit has exclusive features that ensure positive anchorageunder the most arduous conditions.The expansion unit, which is available as a ‘bail type’ unit, is a 3-leafed mechanicalanchor which conforms to the hole diameter. This feature ensures a more even loaddistribution between the anchor and the rock at the anchor point.The serrations on the shell are rounded off. This is done to reduce point loading atthe point between the shell and the surface of the borehole. This reducescrushing of the rock and broaching of the hole, thus taking maximum advantage of thestrength of the undisturbed rock at the anchor point.
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