4-Inch Rock Drill Bits for Sale

A 4-inch DTH hammer bit uses percussive impact from tungsten carbide buttons to crush hard rock, making it ideal for mining and water well drilling in abrasive formations. A tricone bit uses three rotating cones to crush and shear rock, and performs well across soft-to-hard formations in oil & gas and HDD applications.

Infinity Tool MFG's 4-inch rock drill bits are constructed from high-quality steel bodies fitted with tungsten carbide buttons or inserts, available in Standard, Diamond, or Bluemaxx carbide grades depending on formation hardness and required durability for the drilling application.

Yes. Infinity Tool MFG offers custom manufacturing for 4-inch bits including different face shapes (Concave, Convex, Flat, Double Gauge), button shapes (Domed, Ballistic, Semi-Ballistic), and carbide grades to match specific formation and application requirements.

4-inch rock drill bits are widely used in mining, oil & gas exploration, water well drilling, geothermal energy projects, horizontal directional drilling (HDD), and construction or geotechnical investigations where hard rock formations must be penetrated efficiently.

In-stock items typically ship within 2 working days from the Benton, Illinois facility. Expedited or urgent shipments can be coordinated upon request by contacting the sales team directly for lead times on custom orders.

Pricing is available upon request. Customers can submit a quote request specifying diameter, connection type, and application details, and the technical sales team will provide customized pricing and availability information.