20" Terex digger derrick standalone core barrel
Can increase productivity when drilling hard rock, such as limestone.
2", 2-1/2", 2-5/8", or 3" hex hubs available
5/8" wall thickness
30" barrel length
5-tooth cut pattern
Comes with C10Teeth (65377049)
J-Tooth (TA129932) or Hex Tooth (TA000388) are also available- Call for a quote.Relief slots around barrel circumference.
Relief cuts in the top for reduced crowd pressure.
Coring of fractural and non-fractural rock, non-reinforced, and reinforced concrete. For use when material cannot be effectively drilled with conventional digger derrick augers. The optional extendable pilot used with the barrel allows for an easy start and provides additional stability in extremely hard rock or out-of-level surfaces.