Boart Longyear

Boart Longyear™ reamers and adapter couplings feature increased stability and reduced vibrations due to the specially designed spiral pads, which provide increased contact with the circumference of the hole. Our reaming shells experience longer life in the field due to the greater number of diamonds and high-grade carbide reinforcements.

Four types of reamers are available in all standard drilling sizes as well as a number of region-specific sizes.

Reamer types
Diamond impregnated (IMP)
Magnum (MGM)
Premium (PREM)
Broached(BROACH)

Gauge
Boart Longyear reaming shells are available in three standard gauge configurations.
Standard Gauge (S)
Equal to reaming shell gauge (R)
Oversized OD (OS, INCHES)

Diamond Impregnated Reamers

Our diamond impregnated reamers feature a mixture of large natural stones combined with synthetic stones concentrated on the surface of the reamer pad.

Broached Reamers

Ideal for softer formations, Boart Longyear broached reamers include natural diamonds placed in a broach that is made up of several half-round strips. This reduces the contact of the reamer on the rock, decreasing drag and increasing water flow.

Magnum Reamers

Our magnum reamers feature alternating rows of tungsten carbide and TSD pins, and are used for gathering core samples that cannot be contaminated by natural fragments.

Premium Reamers

Boart Longyear premium reamers contain the most natural diamond content of all the reamers. Each pad is reinforced with Tungsten carbide strips on both the leading and trailing edges to help protect the hole gauge and extend life.