Product Description
This 150 mm ball-tooth DTH bit is described for a 45A high-pressure hammer in mining and large rock-hole work. The 5.91-inch bit gauge and four-inch hammer-class wording refer to different parts of the assembly and should not be treated as equivalent diameters. Place the use within the mining and exploration application archive and assess wear through the abrasive formation archive. The tool is intended for competent rock, not for unsupported overburden or soil drilling.
The source identifies a 150 mm button face, ball teeth, a 45A DTH hammer reference, and a four-inch hammer class. The conservative construction is an alloy-steel DTH body with fixed carbide buttons and a 45A-compatible shank subject to dimensional review. Button count, face profile, spline geometry, valve arrangement, and ports are not stated. The source pairing also requires care: 150 mm converts to about 5.91 inches, so “four inch” describes the hammer class rather than the finished hole gauge.
Use 1,000–3,000 lbf/in of diameter, 25–60 RPM, and only the pressure and air volume approved for the verified 45A hammer; the general DTH reference is 0.7–2.4 MPa. Hard and abrasive formations fit the impact structure, but fractured zones may call for reduced input and closer return monitoring. Inspect shank contact after initial operation and document any unusual fretting or air leakage. Flow remains blank because compressor delivery depends on depth and porting. The explicit limitation is the need to reconcile bit-gauge and hammer-class dimensions. Mining terminology can be checked through the IADC.