Reamer Drill Bits

A drill bit creates the initial pilot hole by cutting through virgin formation, while a reaming bit enlarges an already-drilled hole to a larger, precise diameter. Reamers typically follow behind a pilot bit, using PDC, tricone, or tungsten carbide button cutters to smooth walls and maintain gauge without creating a new borehole path.

Reamer sizing depends on the pilot hole diameter and target enlarged diameter needed for your application—ranging from 1 inch up to 48 inches in Infinity Tool MFG's product line. Match the reamer's pilot bore to your existing hole size and select an outside diameter matching your casing, pipe, or final bore requirement.

Reamer drill bits are available in multiple cutting technologies including PDC (Polycrystalline Diamond Compact), DTH (Down-The-Hole) with tungsten carbide buttons, and Tricone roller cone designs. Each technology suits different formation types—PDC and tricone for softer to hard formations, DTH hammer systems for hard rock applications requiring high-impact percussion drilling.

Yes, reamer drill bits can be custom manufactured to match specific diameter, pilot, shank, and button configuration requirements. Infinity Tool MFG offers in-house engineering and CNC machining to produce custom reamers ranging from 1 inch to 48 inches in diameter for unique drilling conditions and industry-specific applications.

Reamer drill bits are widely used across oil & gas, mining, geothermal, water well, construction, geotechnical, and horizontal directional drilling (HDD) industries. They're essential wherever boreholes need to be enlarged or stabilized to a precise diameter, from underground utility installation to exploratory rock drilling.

Depending on the cutting technology, reamer drill bits can handle a wide range of formations—from soft to medium ground using tricone roller designs, to hard rock formations using PDC cutters or tungsten carbide DTH buttons. Multi-formation/versatile options are also available for mixed ground conditions.