Casing Ring Bits

Simultaneous Drilling and Casing into Bedrock

Numa’s Casing Ring Bit System is the best method for simultaneous drilling and casing into bedrock. The system is capable of drilling 16″ to 48″ (406 – 1219 mm) diameter holes in both overburden and hard rock conditions using conventional or reverse circulation DTH hammers. Components include a pilot bit, casing shoe, and heavy-duty ring bit.

Benefits of the Casing Ring Bit System include:

•  Options for drill through and non-drill through applications

•  Reduces cost with same pilot bit used with multiple ring sizes

•  Provides simple lock design to better engage and disengage from ring

•  Eliminates carbide issues locking into pilot

•  Efficient hole cleaning through large flushing slots

•  For use in vertical and horizontal applications

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