Center Rock manufacturers a full line of air rock drilling tools and accessories including Down-the-Hole (DTH) hammers and bits from 3.5” – 48” (89-1219mm) diameter and casing advancing overburden drilling systems. Center Rock are a leading global manufacturer/supplier of the CRI LP Canister Drills using Direct Circulation w/Calyx or Reverse Circulation serving the construction, mining, HDD and utility markets. Coupled with outstanding service, Center Rock is a one-stop rock drilling shop capable of supplying the tools for any rock drilling requirements.
Center Rock Cluster Drills
Advanced engineering of Center Rock Inc’s LP Drills provide a cost effective solution for drilling excavation requirements up to 144″ (3658 mm) in diameter. Center Rock drills have been used by some of the nation’s largest building, roadway, utility and mining contractors to quickly drill holes to the exact size required by their specifications.
Conventional LP and Hole Opener
Hammers fitted with button bits are positioned in a specially designed grid to ensure even cutting across the face of the hole and to promote proper flow of cuttings outward and upward into the calyx basket. For large diameter holes, a pilot shaft is drilled with a full face LP Drill, then a larger diameter hole opener opens the pilot shaft to the required diameter up to 144” (3658 mm).
Reverse Circulation (RC) LP Drill
Center Rock Inc.’s Reverse Circulation LP Drills are ideal for deep hole applications or discharge containment. They offer two styles which are capped flute recovery and center recovery. The capped flute recovery style consists of a standard LP drill with larger flutes that are capped, a seal band added to the base and interchanges, along with a shroud bolted to the top. The advantage of the flute style is the canister may be converted between reverse circulation and direct circulation mode. Alternatively, the center recover style has integrated return tubes flowing through the center of the canister, along with a built-in air/cuttings interchange for a shorter top connection. Both style RC LP Drills exhibit base recovery for full containment, can be manufactured with any pipe connection, and utilises standard LP hammers and bits.
Down the Hole Hammers
Center Rock offers one of the most complete lines of down the hole hammers, drills and downhole bits ranging from 3.5” – 48” (89mm – 1219mm) which are designed for peak performance in all rock drilling applications including but not limited to; foundation & geotechnical drilling, blasthole drilling in quarries & mines, waterwell & geothermal boreholes, oil & gas underbalanced drilling, horizontal directional drilling, and utility transmission & distribution rock sockets.
Construction/utility/horizontal drilling can be a challenge and the Low Profile (LP) Drill series from Center Rock is up to the task. The advanced engineering of the drills provides a cost effective solution for rock drilling requirements up to 144” (3657.6 mm) in diameter. Center Rock drills have been used by some of the nation’s largest building, roadway, and mining contractors to quickly drill holes to exact size required by their specifications.