Work Preparation; Drilling Boreholes - darda C2S Product Manual

4 Work Preparation

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4.1
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Work Preparation

Drilling Boreholes

Fig. 4-1 - 1 Drilling boreholes
To avoid damage to the splitter, the boreholes must be the correct size and
cautiously drilled!
Please heed the following instructions:
– To protect the splitting head, the borehole should be drilled as straight as possi-
ble.
– The diameter of the borehole should not exceed / fall below the values stated in
the chapter Technical Data. Too much play between the perforated wall and the
splitting head reduces the effective splitting distance.
– The borehole must be deeper than the length of the splitting head in the case of
a completely extended wedge.
– The borehole is to be drilled vertically to the surface as a rule.
– To produce a long, straight split with multiple splitting cylinders, the borehole
distance should amount to approx. 40 to 60 cm.
The outer borehole is to be drilled roughly 60 cm from the edge.
For particularly exact splits, e.g. in obtaining natural stone, test splits should be
carried out at different drilling distances.
To control the splitting behaviour, intermediary boreholes in which the splitter
will not be used can also be drilled.
OM Hydraulic Stone and Concrete Splitter, Version 1.0 04/2010
8 Technical Data