Boart Longyear

TSD Bits

Thermally stable diamond (TSD) cutters are smaller and generally more robust than polycrystalline compact diamond (PCD) cutters. Cutters are placed to provide full coverage across the cutting face, and the inserts are set in a tough wear-resistant matrix body and feature broached gauge reinforcements.

These bits are suitable for drilling soft to medium-hard formations depending on the power of the drill rig. The smaller, more robust cutters make this bit usable in rock types that are harder than those which can be drilled with PCD bits.

Size
Boart Longyear™ bits are available in all standard drilling sizes as well as a number a region-specific sizes.

Gauge   
Boart Longyear TSD bits are available in two standard gauge configurations.
Equal to reaming shell gauge (R)
Oversized OD (OS, INCHES)

Waterways
Where applicable, Boart Longyear TSD bits are offered in the two following waterway options:
Deep ID (DD)
Face discharge (FD)
   
Thread
Boart Longyear TSD bits are available with the two following threads:
Box Thread (R/B)
Pin Thread (R/P)