ST68 threaded button bit for underground mining drilling

ST68 Button Bit Overview

ST usually stands for “super taper” or indicates a heavy-duty thread, while 68 refers to its large-size connection. The ST68 button bit can reliably transmit the substantial impact energy and torque generated by drilling rigs to the rock.

Specifications of the ST68 Button Bit

• ST68 threaded drill flat button bit.
• ST68 threaded drill retract button bit.

Technical Parameters of the ST68 Threaded Button Bit

• Connection thread: ST68
• Head material: Tungsten carbide
• Bit body material: High-strength alloy steel
• Flushing grooves: Distributed along the bit head for chip removal and cooling
• Head design: Ballistic button shape
• Diameter: 102 mm and 115 mm
• Gauge button angle: 35 degrees
• Gauge buttons: 8 x 13 mm, 8 x 14 mm, and 10 x 12 mm
• Front buttons: 6 x 13 mm and 8 x 12 mm
• Weight: Ranges from 5.5 kg to 7.0 kg
• Head manufacturing process: Hot-melt inlay technology
• Other manufacturing processes: Full carburization heat treatment, high-frequency treatment, and phosphating treatment