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Drilling anchor holes in rock

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#1 GeneRisi



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Posted 29 August 2011 - 09:23 AM

 How are holes deeper than about 18" drilled in rock? I have not seen impact hammer/drill rock bits much longer than about 18" .


Gene Risi

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Gene Risi (W1EBR)

#2 Tyler Stoddard

Tyler Stoddard


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Posted 30 August 2011 - 11:04 AM

Hello Gene,

  The rods used to drill holes for rock anchors come in a variety of sizes and you can find them at most jackhammer, or rock drill websites.  What you want to make sure of when deciding on a rod and bit, is that the threads match.  Here we use 1" rods with rope threads.  I will include a couple of links directing you toward some retail options.





Tyler Stoddard
Technical Support Specialist
NRG Systems

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