Maggi BORING SYSTEM 23 - Page 29

Pag. 22 MAGGI TECHNOLOGY - BORING SYSTEM 23 - REV00
ADVANTAGES OF THE BACKSTOP SPIRAL SYSTEM
It is not necessary to change the horizontal / vertical depth, the risk of breaking the panel in vertical drilling
is eliminated.
Z1 = Z - 10
Example
DRILLING DEPTH ( mm )
PIN LENGHT ( mm ) Z HOLE Z1 HOLE
30 21 11
Fig. D
AUTOMATIC DEPTH
DIFFERENTIAL
Fig. C
EXAMPLE
ATTENTION - VERTICAL DRILL
THE DEPTH READ ON THE SPIRAL SCALE IS NOT THE ACTUAL DEPTH: THERE IS A
DIFFERENCE OF 10 mm (Fig. C) DUE TO THE PRESENCE OF AN AUTOMATIC DEPTH
DIFFERENTIAL.
THIS DIFFERENCE IS USED IN COUPLING PANELS WITH PLUGS: SETTING THE HORIZONTAL
DEPTH, WE HAVE AUTOMATICALLY THE CORRECT VERTICAL DEPTH (Fig. D) .